./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be --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 a376335b8a3ab47de9d514c456736b6e8cd0860f7823a0aab43b69eb15a45340 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-e943c26 [2021-10-21 19:33:34,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:33:34,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:33:34,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:33:34,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:33:34,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:33:34,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:33:34,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:33:34,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:33:34,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:33:34,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:33:34,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:33:34,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:33:34,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:33:34,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:33:34,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:33:34,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:33:34,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:33:34,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:33:34,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:33:34,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:33:34,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:33:34,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:33:34,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:33:34,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:33:34,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:33:34,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:33:34,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:33:34,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:33:34,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:33:34,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:33:34,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:33:34,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:33:34,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:33:34,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:33:34,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:33:34,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:33:34,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:33:34,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:33:34,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:33:34,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:33:34,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:33:34,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:33:34,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:33:34,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:33:34,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:33:34,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:33:34,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:33:34,325 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:33:34,325 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:33:34,326 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:33:34,326 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:33:34,327 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:33:34,327 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:33:34,328 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:33:34,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:33:34,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:33:34,329 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:33:34,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:33:34,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:33:34,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:33:34,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:33:34,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:33:34,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:33:34,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:33:34,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:33:34,332 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:33:34,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:33:34,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:33:34,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:33:34,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:33:34,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:33:34,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:33:34,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:33:34,337 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:33:34,338 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_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a376335b8a3ab47de9d514c456736b6e8cd0860f7823a0aab43b69eb15a45340 [2021-10-21 19:33:34,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:33:34,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:33:34,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:33:34,730 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:33:34,732 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:33:34,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c [2021-10-21 19:33:34,850 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/data/bb757753c/0d67bf78001e4db6bcc01ae5bb96cf52/FLAGc127e8951 [2021-10-21 19:33:35,484 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:33:35,485 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c [2021-10-21 19:33:35,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/data/bb757753c/0d67bf78001e4db6bcc01ae5bb96cf52/FLAGc127e8951 [2021-10-21 19:33:35,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/data/bb757753c/0d67bf78001e4db6bcc01ae5bb96cf52 [2021-10-21 19:33:35,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:33:35,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:33:35,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:33:35,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:33:35,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:33:35,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:33:35" (1/1) ... [2021-10-21 19:33:35,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238d9b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:35, skipping insertion in model container [2021-10-21 19:33:35,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:33:35" (1/1) ... [2021-10-21 19:33:35,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:33:35,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:33:36,186 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_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c[18789,18802] [2021-10-21 19:33:36,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:33:36,199 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:33:36,289 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_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/sv-benchmarks/c/product-lines/minepump_spec3_product51.cil.c[18789,18802] [2021-10-21 19:33:36,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:33:36,314 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:33:36,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36 WrapperNode [2021-10-21 19:33:36,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:33:36,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:33:36,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:33:36,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:33:36,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:33:36,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:33:36,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:33:36,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:33:36,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:33:36,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:33:36,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:33:36,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:33:36,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (1/1) ... [2021-10-21 19:33:36,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:33:36,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:33:36,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:33:36,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:33:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:33:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:33:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:33:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:33:37,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:33:37,893 INFO L299 CfgBuilder]: Removed 166 assume(true) statements. [2021-10-21 19:33:37,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:33:37 BoogieIcfgContainer [2021-10-21 19:33:37,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:33:37,899 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:33:37,900 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:33:37,905 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:33:37,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:33:37,907 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:33:35" (1/3) ... [2021-10-21 19:33:37,909 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3430efb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:33:37, skipping insertion in model container [2021-10-21 19:33:37,909 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:33:37,909 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:33:36" (2/3) ... [2021-10-21 19:33:37,910 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3430efb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:33:37, skipping insertion in model container [2021-10-21 19:33:37,910 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:33:37,910 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:33:37" (3/3) ... [2021-10-21 19:33:37,912 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2021-10-21 19:33:37,990 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:33:37,991 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:33:37,991 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:33:37,991 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:33:37,991 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:33:37,991 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:33:37,992 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:33:37,992 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:33:38,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 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) [2021-10-21 19:33:38,073 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-10-21 19:33:38,074 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:33:38,074 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:33:38,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:33:38,086 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:38,087 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:33:38,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 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) [2021-10-21 19:33:38,112 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 79 [2021-10-21 19:33:38,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:33:38,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:33:38,115 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:33:38,115 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:38,130 INFO L791 eck$LassoCheckResult]: Stem: 107#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 38#L-1true havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 43#L604true 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; 6#L612true main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 124#L568true assume 0 != main_~tmp~6; 9#L542true havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 30#L464-1true [2021-10-21 19:33:38,133 INFO L793 eck$LassoCheckResult]: Loop: 30#L464-1true assume !false; 7#L175true assume test_~splverifierCounter~0 < 4; 41#L176true test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 72#L184true assume !(0 != test_~tmp~0); 110#L184-1true test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 85#L194true assume !(0 != test_~tmp___0~0); 8#L194-1true test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 94#L204true assume 0 != test_~tmp___2~0; 29#L210-1true assume !(0 != ~pumpRunning~0); 68#L243true assume !(0 != ~systemActive~0); 79#L250true havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 108#L101true __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 91#L458true assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 30#L464-1true [2021-10-21 19:33:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-21 19:33:38,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:38,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945765580] [2021-10-21 19:33:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:38,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:38,576 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:38,765 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:33:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:38,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1671186434, now seen corresponding path program 1 times [2021-10-21 19:33:38,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:38,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128510631] [2021-10-21 19:33:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:38,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:38,778 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:38,789 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:33:38,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:38,791 INFO L82 PathProgramCache]: Analyzing trace with hash 43092504, now seen corresponding path program 1 times [2021-10-21 19:33:38,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:38,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152871636] [2021-10-21 19:33:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:38,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:33:38,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:38,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152871636] [2021-10-21 19:33:38,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152871636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:33:38,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:33:38,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:33:38,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263360200] [2021-10-21 19:33:39,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:33:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:33:39,122 INFO L87 Difference]: Start difference. First operand has 122 states, 121 states have (on average 1.537190082644628) internal successors, (186), 121 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-10-21 19:33:39,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:39,425 INFO L93 Difference]: Finished difference Result 294 states and 423 transitions. [2021-10-21 19:33:39,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:33:39,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 294 states and 423 transitions. [2021-10-21 19:33:39,437 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 189 [2021-10-21 19:33:39,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 294 states to 273 states and 402 transitions. [2021-10-21 19:33:39,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 273 [2021-10-21 19:33:39,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 273 [2021-10-21 19:33:39,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 273 states and 402 transitions. [2021-10-21 19:33:39,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:33:39,459 INFO L681 BuchiCegarLoop]: Abstraction has 273 states and 402 transitions. [2021-10-21 19:33:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states and 402 transitions. [2021-10-21 19:33:39,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 162. [2021-10-21 19:33:39,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 162 states have (on average 1.462962962962963) internal successors, (237), 161 states have internal predecessors, (237), 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) [2021-10-21 19:33:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 237 transitions. [2021-10-21 19:33:39,545 INFO L704 BuchiCegarLoop]: Abstraction has 162 states and 237 transitions. [2021-10-21 19:33:39,546 INFO L587 BuchiCegarLoop]: Abstraction has 162 states and 237 transitions. [2021-10-21 19:33:39,546 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:33:39,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 237 transitions. [2021-10-21 19:33:39,554 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2021-10-21 19:33:39,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:33:39,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:33:39,556 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:33:39,557 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:39,557 INFO L791 eck$LassoCheckResult]: Stem: 549#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 495#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 496#L604 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; 438#L612 main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 439#L568 assume 0 != main_~tmp~6; 445#L542 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 446#L464-1 [2021-10-21 19:33:39,558 INFO L793 eck$LassoCheckResult]: Loop: 446#L464-1 assume !false; 440#L175 assume test_~splverifierCounter~0 < 4; 441#L176 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 500#L184 assume !(0 != test_~tmp~0); 520#L184-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 534#L194 assume !(0 != test_~tmp___0~0); 443#L194-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 444#L204 assume 0 != test_~tmp___2~0; 449#L210-1 assume !(0 != ~pumpRunning~0); 470#L243 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 526#L301 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 531#L275-1 assume !(0 == ~pumpRunning~0); 513#L250 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 532#L101 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 541#L458 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 446#L464-1 [2021-10-21 19:33:39,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:39,560 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-21 19:33:39,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:39,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16847832] [2021-10-21 19:33:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:39,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:39,667 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:39,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:33:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:39,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1961899900, now seen corresponding path program 1 times [2021-10-21 19:33:39,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:39,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577580395] [2021-10-21 19:33:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:39,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:33:39,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:39,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577580395] [2021-10-21 19:33:39,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577580395] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:33:39,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:33:39,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:33:39,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291851982] [2021-10-21 19:33:39,831 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:33:39,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:33:39,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:33:39,832 INFO L87 Difference]: Start difference. First operand 162 states and 237 transitions. cyclomatic complexity: 78 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) [2021-10-21 19:33:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:39,927 INFO L93 Difference]: Finished difference Result 207 states and 286 transitions. [2021-10-21 19:33:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:33:39,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 207 states and 286 transitions. [2021-10-21 19:33:39,931 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2021-10-21 19:33:39,935 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 207 states to 207 states and 286 transitions. [2021-10-21 19:33:39,935 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 207 [2021-10-21 19:33:39,936 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 207 [2021-10-21 19:33:39,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 286 transitions. [2021-10-21 19:33:39,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:33:39,938 INFO L681 BuchiCegarLoop]: Abstraction has 207 states and 286 transitions. [2021-10-21 19:33:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 286 transitions. [2021-10-21 19:33:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-10-21 19:33:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 207 states have (on average 1.3816425120772946) internal successors, (286), 206 states have internal predecessors, (286), 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) [2021-10-21 19:33:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 286 transitions. [2021-10-21 19:33:39,950 INFO L704 BuchiCegarLoop]: Abstraction has 207 states and 286 transitions. [2021-10-21 19:33:39,950 INFO L587 BuchiCegarLoop]: Abstraction has 207 states and 286 transitions. [2021-10-21 19:33:39,951 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:33:39,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 207 states and 286 transitions. [2021-10-21 19:33:39,953 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 146 [2021-10-21 19:33:39,954 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:33:39,954 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:33:39,955 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:33:39,955 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:33:39,955 INFO L791 eck$LassoCheckResult]: Stem: 937#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 873#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 874#L604 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; 813#L612 main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 814#L568 assume 0 != main_~tmp~6; 820#L542 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 821#L464-1 [2021-10-21 19:33:39,956 INFO L793 eck$LassoCheckResult]: Loop: 821#L464-1 assume !false; 864#L175 assume test_~splverifierCounter~0 < 4; 987#L176 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 998#L184 assume !(0 != test_~tmp~0); 996#L184-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 995#L194 assume !(0 != test_~tmp___0~0); 993#L194-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 929#L204 assume 0 != test_~tmp___2~0; 824#L210-1 assume !(0 != ~pumpRunning~0); 908#L243 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 909#L301 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 915#L275-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 935#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 844#L146-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 845#L403-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 825#L403-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 826#L409-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 884#L279-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 892#L250 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 916#L101 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 926#L458 assume 0 != __utac_acc__Specification3_spec__1_~tmp~5; 821#L464-1 [2021-10-21 19:33:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:39,957 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-21 19:33:39,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:39,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674180058] [2021-10-21 19:33:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:39,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:40,048 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:40,138 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:33:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:40,139 INFO L82 PathProgramCache]: Analyzing trace with hash -2099215608, now seen corresponding path program 1 times [2021-10-21 19:33:40,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:40,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402254796] [2021-10-21 19:33:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:40,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:40,158 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:40,174 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:33:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1643144414, now seen corresponding path program 1 times [2021-10-21 19:33:40,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:40,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125228472] [2021-10-21 19:33:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:40,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:33:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:33:40,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:33:40,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125228472] [2021-10-21 19:33:40,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125228472] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:33:40,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:33:40,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:33:40,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050664869] [2021-10-21 19:33:40,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:33:40,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:33:40,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:33:40,629 INFO L87 Difference]: Start difference. First operand 207 states and 286 transitions. cyclomatic complexity: 82 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:33:40,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:33:40,790 INFO L93 Difference]: Finished difference Result 705 states and 979 transitions. [2021-10-21 19:33:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:33:40,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 705 states and 979 transitions. [2021-10-21 19:33:40,804 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 531 [2021-10-21 19:33:40,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 705 states to 705 states and 979 transitions. [2021-10-21 19:33:40,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 705 [2021-10-21 19:33:40,816 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 705 [2021-10-21 19:33:40,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 705 states and 979 transitions. [2021-10-21 19:33:40,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:33:40,826 INFO L681 BuchiCegarLoop]: Abstraction has 705 states and 979 transitions. [2021-10-21 19:33:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states and 979 transitions. [2021-10-21 19:33:40,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 408. [2021-10-21 19:33:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 408 states have (on average 1.357843137254902) internal successors, (554), 407 states have internal predecessors, (554), 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) [2021-10-21 19:33:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 554 transitions. [2021-10-21 19:33:40,865 INFO L704 BuchiCegarLoop]: Abstraction has 408 states and 554 transitions. [2021-10-21 19:33:40,865 INFO L587 BuchiCegarLoop]: Abstraction has 408 states and 554 transitions. [2021-10-21 19:33:40,865 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:33:40,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 408 states and 554 transitions. [2021-10-21 19:33:40,873 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 292 [2021-10-21 19:33:40,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:33:40,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:33:40,876 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:33:40,876 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] [2021-10-21 19:33:40,876 INFO L791 eck$LassoCheckResult]: Stem: 1886#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1806#L-1 havoc main_#res;havoc main_#t~ret45, main_~retValue_acc~8, main_~tmp~6;havoc main_~retValue_acc~8;havoc main_~tmp~6; 1807#L604 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; 1743#L612 main_#t~ret45 := valid_product_#res;main_~tmp~6 := main_#t~ret45;havoc main_#t~ret45; 1744#L568 assume 0 != main_~tmp~6; 1750#L542 havoc test_#t~nondet17, test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1751#L464-1 [2021-10-21 19:33:40,877 INFO L793 eck$LassoCheckResult]: Loop: 1751#L464-1 assume !false; 2095#L175 assume test_~splverifierCounter~0 < 4; 2096#L176 test_~tmp~0 := test_#t~nondet17;havoc test_#t~nondet17; 2136#L184 assume !(0 != test_~tmp~0); 2134#L184-1 test_~tmp___0~0 := test_#t~nondet18;havoc test_#t~nondet18; 2133#L194 assume !(0 != test_~tmp___0~0); 2132#L194-1 test_~tmp___2~0 := test_#t~nondet19;havoc test_#t~nondet19; 2129#L204 assume 0 != test_~tmp___2~0; 2128#L210-1 assume !(0 != ~pumpRunning~0); 1847#L243 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1848#L301 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1855#L275-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1881#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1774#L146-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 1775#L403-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 1755#L403-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 1756#L409-1 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 1819#L279-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1829#L250 havoc __utac_acc__Specification3_spec__1_#t~ret42, __utac_acc__Specification3_spec__1_#t~ret43, __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_~tmp~5, __utac_acc__Specification3_spec__1_~tmp___0~3, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~5;havoc __utac_acc__Specification3_spec__1_~tmp___0~3;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 2102#L101 __utac_acc__Specification3_spec__1_#t~ret42 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~5 := __utac_acc__Specification3_spec__1_#t~ret42;havoc __utac_acc__Specification3_spec__1_#t~ret42; 2101#L458 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~5);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; 2100#L133 __utac_acc__Specification3_spec__1_#t~ret43 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~3 := __utac_acc__Specification3_spec__1_#t~ret43;havoc __utac_acc__Specification3_spec__1_#t~ret43; 2097#L464 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3); 1751#L464-1 [2021-10-21 19:33:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:40,878 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-21 19:33:40,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:40,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315334544] [2021-10-21 19:33:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:40,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:40,954 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:41,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:33:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1288438010, now seen corresponding path program 1 times [2021-10-21 19:33:41,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:41,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249852605] [2021-10-21 19:33:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:41,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:41,049 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:41,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:33:41,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:33:41,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1486191252, now seen corresponding path program 1 times [2021-10-21 19:33:41,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:33:41,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724334151] [2021-10-21 19:33:41,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:33:41,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:33:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:41,141 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:33:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:33:41,235 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:34:54,872 WARN L207 SmtUtils]: Spent 1.22 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-21 19:36:11,148 WARN L207 SmtUtils]: Spent 36.29 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-21 19:36:11,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:36:11 BoogieIcfgContainer [2021-10-21 19:36:11,348 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:36:11,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:36:11,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:36:11,349 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:36:11,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:33:37" (3/4) ... [2021-10-21 19:36:11,353 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:36:11,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:36:11,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:36:11,422 INFO L168 Benchmark]: Toolchain (without parser) took 155665.55 ms. Allocated memory was 102.8 MB in the beginning and 151.0 MB in the end (delta: 48.2 MB). Free memory was 68.7 MB in the beginning and 64.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:11,423 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:36:11,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.44 ms. Allocated memory is still 102.8 MB. Free memory was 68.5 MB in the beginning and 70.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:11,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.91 ms. Allocated memory is still 102.8 MB. Free memory was 70.7 MB in the beginning and 66.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:11,425 INFO L168 Benchmark]: Boogie Preprocessor took 83.34 ms. Allocated memory is still 102.8 MB. Free memory was 66.9 MB in the beginning and 64.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:11,426 INFO L168 Benchmark]: RCFGBuilder took 1416.58 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.4 MB in the beginning and 73.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:11,427 INFO L168 Benchmark]: BuchiAutomizer took 153449.18 ms. Allocated memory was 123.7 MB in the beginning and 151.0 MB in the end (delta: 27.3 MB). Free memory was 73.7 MB in the beginning and 66.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:11,428 INFO L168 Benchmark]: Witness Printer took 71.91 ms. Allocated memory is still 151.0 MB. Free memory was 66.9 MB in the beginning and 64.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:36:11,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 54.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 556.44 ms. Allocated memory is still 102.8 MB. Free memory was 68.5 MB in the beginning and 70.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.91 ms. Allocated memory is still 102.8 MB. Free memory was 70.7 MB in the beginning and 66.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.34 ms. Allocated memory is still 102.8 MB. Free memory was 66.9 MB in the beginning and 64.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1416.58 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.4 MB in the beginning and 73.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 153449.18 ms. Allocated memory was 123.7 MB in the beginning and 151.0 MB in the end (delta: 27.3 MB). Free memory was 73.7 MB in the beginning and 66.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. * Witness Printer took 71.91 ms. Allocated memory is still 151.0 MB. Free memory was 66.9 MB in the beginning and 64.8 MB in the end (delta: 2.1 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 6 locations. The remainder module has 408 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 153.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 152.3s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 116.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 408 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 408 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 605 SDtfs, 1483 SDslu, 1676 SDs, 0 SdLazy, 117 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 314.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 174]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31068} State at position 1 is {NULL=0, NULL=31092, NULL=31068, NULL=31086, methaneLevelCritical=0, retValue_acc=1, NULL=0, NULL=31073, NULL=31084, NULL=0, tmp___1=0, NULL=31072, retValue_acc=0, NULL=0, NULL=31078, cleanupTimeShifts=4, tmp=0, tmp=0, NULL=31090, NULL=0, waterLevel=1, NULL=0, tmp___0=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=31088, retValue_acc=1, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=31079, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@272b5621=70, NULL=31080, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64eb1d43=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57ec2795=0, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69497990=0, NULL=31071, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@280a25a5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36dc723c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40a7a1c8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f6044c3=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42981d09=0, retValue_acc=0, NULL=31070, NULL=31076, tmp___0=0, NULL=0, NULL=0, NULL=31083, NULL=0, NULL=0, NULL=0, tmp=0, NULL=31089, NULL=31082, tmp___0=1, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=31095, \result=1, NULL=0, NULL=31069, \result=0, NULL=0, NULL=31093, \result=0, NULL=31077, NULL=0, NULL=31075, NULL=31087, NULL=31085, NULL=31096, tmp___2=70, splverifierCounter=0, NULL=0, \result=0, NULL=31094, NULL=31081, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@772e7682=0, NULL=31091, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6703f7ad=0, NULL=31074} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L235] int pumpRunning = 0; [L236] int systemActive = 1; [L483] int cleanupTimeShifts = 4; [L786] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L559] int retValue_acc ; [L560] int tmp ; [L608] int retValue_acc ; [L611] retValue_acc = 1 [L612] return (retValue_acc); [L566] tmp = valid_product() [L568] COND TRUE \read(tmp) [L165] int splverifierCounter ; [L166] int tmp ; [L167] int tmp___0 ; [L168] int tmp___1 ; [L169] int tmp___2 ; [L172] splverifierCounter = 0 Loop: [L174] COND TRUE 1 [L176] COND TRUE splverifierCounter < 4 [L182] tmp = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp)) [L192] tmp___0 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___0)) [L202] tmp___2 = __VERIFIER_nondet_int() [L204] COND TRUE \read(tmp___2) [L243] COND FALSE !(\read(pumpRunning)) [L250] COND TRUE \read(systemActive) [L298] int tmp ; [L301] COND FALSE !(\read(pumpRunning)) [L272] int tmp ; [L275] COND TRUE ! pumpRunning [L395] int retValue_acc ; [L396] int tmp ; [L397] int tmp___0 ; [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L401] tmp = isHighWaterSensorDry() [L403] COND TRUE \read(tmp) [L404] tmp___0 = 0 [L408] retValue_acc = tmp___0 [L409] return (retValue_acc); [L277] tmp = isHighWaterLevel() [L279] COND FALSE !(\read(tmp)) [L450] int tmp ; [L451] int tmp___0 ; [L452] int tmp___1 ; [L97] int retValue_acc ; [L100] retValue_acc = methaneLevelCritical [L101] return (retValue_acc); [L456] tmp = isMethaneLevelCritical() [L458] COND FALSE !(\read(tmp)) [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L462] tmp___0 = getWaterLevel() [L464] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:36:11,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e98311-b1e0-4dab-9863-a5ad4f5aef5b/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...