./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:16:09,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:16:09,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:16:09,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:16:09,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:16:09,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:16:09,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:16:09,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:16:09,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:16:09,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:16:09,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:16:09,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:16:09,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:16:09,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:16:09,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:16:09,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:16:09,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:16:09,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:16:09,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:16:09,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:16:09,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:16:09,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:16:09,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:16:09,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:16:09,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:16:09,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:16:09,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:16:09,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:16:09,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:16:09,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:16:09,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:16:09,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:16:09,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:16:09,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:16:09,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:16:09,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:16:09,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:16:09,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:16:09,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:16:09,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:16:09,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:16:09,670 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 23:16:09,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:16:09,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:16:09,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:16:09,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:16:09,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:16:09,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:16:09,733 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:16:09,733 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:16:09,733 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:16:09,734 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:16:09,735 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:16:09,735 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:16:09,736 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:16:09,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:16:09,736 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:16:09,736 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:16:09,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:16:09,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:16:09,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:16:09,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:16:09,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:16:09,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:16:09,738 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:16:09,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:16:09,738 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:16:09,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:16:09,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:16:09,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:16:09,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:16:09,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:16:09,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:16:09,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:16:09,744 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:16:09,744 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_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0619cf376c55d0c5059a9fcafc1519de09a8e72548b38d7587e0bc4190ad2779 [2021-10-28 23:16:10,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:16:10,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:16:10,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:16:10,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:16:10,210 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:16:10,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-10-28 23:16:10,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/data/5e2ffc1d1/3a25449d29f54488a9de750d12954349/FLAGb46e6d4c1 [2021-10-28 23:16:11,078 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:16:11,079 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-10-28 23:16:11,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/data/5e2ffc1d1/3a25449d29f54488a9de750d12954349/FLAGb46e6d4c1 [2021-10-28 23:16:11,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/data/5e2ffc1d1/3a25449d29f54488a9de750d12954349 [2021-10-28 23:16:11,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:16:11,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:16:11,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:16:11,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:16:11,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:16:11,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:16:11" (1/1) ... [2021-10-28 23:16:11,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36931a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:11, skipping insertion in model container [2021-10-28 23:16:11,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:16:11" (1/1) ... [2021-10-28 23:16:11,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:16:11,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:16:11,871 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_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2021-10-28 23:16:11,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:16:11,917 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:16:12,015 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_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c[16710,16723] [2021-10-28 23:16:12,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:16:12,045 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:16:12,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12 WrapperNode [2021-10-28 23:16:12,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:16:12,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:16:12,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:16:12,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:16:12,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:16:12,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:16:12,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:16:12,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:16:12,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:16:12,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:16:12,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:16:12,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:16:12,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (1/1) ... [2021-10-28 23:16:12,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:16:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:16:12,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:16:12,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:16:12,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:16:12,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:16:12,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:16:12,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:16:13,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:16:13,711 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-10-28 23:16:13,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:13 BoogieIcfgContainer [2021-10-28 23:16:13,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:16:13,719 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:16:13,721 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:16:13,728 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:16:13,730 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:16:13,730 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:16:11" (1/3) ... [2021-10-28 23:16:13,733 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5511d28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:16:13, skipping insertion in model container [2021-10-28 23:16:13,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:16:13,733 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:16:12" (2/3) ... [2021-10-28 23:16:13,734 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5511d28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:16:13, skipping insertion in model container [2021-10-28 23:16:13,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:16:13,734 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:13" (3/3) ... [2021-10-28 23:16:13,736 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2021-10-28 23:16:13,784 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:16:13,784 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:16:13,784 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:16:13,784 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:16:13,784 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:16:13,785 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:16:13,785 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:16:13,785 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:16:13,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:16:13,859 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-10-28 23:16:13,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:16:13,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:16:13,870 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:16:13,870 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:13,871 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:16:13,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:16:13,883 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-10-28 23:16:13,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:16:13,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:16:13,884 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:16:13,885 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:13,891 INFO L791 eck$LassoCheckResult]: Stem: 116#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 49#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 103#L865true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 51#L873true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 63#L140true assume 0 != main_~tmp~0; 111#L113true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 60#L816-1true [2021-10-28 23:16:13,891 INFO L793 eck$LassoCheckResult]: Loop: 60#L816-1true assume !false; 89#L166true assume test_~splverifierCounter~0 < 4; 23#L167true test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 5#L175true assume !(0 != test_~tmp~1); 118#L175-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 97#L185true assume !(0 != test_~tmp___0~0); 112#L185-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 106#L195true assume 0 != test_~tmp___2~0; 93#L201-1true assume !(0 != ~pumpRunning~0); 104#L237true assume !(0 != ~systemActive~0); 17#L244true havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 129#L953true __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 73#L816true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 60#L816-1true [2021-10-28 23:16:13,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-10-28 23:16:13,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:13,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888144564] [2021-10-28 23:16:13,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:13,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:14,258 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:14,524 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:16:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:14,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1670724661, now seen corresponding path program 1 times [2021-10-28 23:16:14,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:14,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154736224] [2021-10-28 23:16:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:14,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:14,549 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:14,573 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:16:14,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash 43554277, now seen corresponding path program 1 times [2021-10-28 23:16:14,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:14,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126335342] [2021-10-28 23:16:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:14,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:16:14,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:14,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126335342] [2021-10-28 23:16:14,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126335342] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:14,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:14,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:16:14,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316104978] [2021-10-28 23:16:15,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:16:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:16:15,052 INFO L87 Difference]: Start difference. First operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 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) [2021-10-28 23:16:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:15,461 INFO L93 Difference]: Finished difference Result 300 states and 426 transitions. [2021-10-28 23:16:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:16:15,464 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 300 states and 426 transitions. [2021-10-28 23:16:15,487 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 193 [2021-10-28 23:16:15,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 300 states to 279 states and 405 transitions. [2021-10-28 23:16:15,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 279 [2021-10-28 23:16:15,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 279 [2021-10-28 23:16:15,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 279 states and 405 transitions. [2021-10-28 23:16:15,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:16:15,517 INFO L681 BuchiCegarLoop]: Abstraction has 279 states and 405 transitions. [2021-10-28 23:16:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states and 405 transitions. [2021-10-28 23:16:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 162. [2021-10-28 23:16:15,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 162 states have (on average 1.4444444444444444) internal successors, (234), 161 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:16:15,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 234 transitions. [2021-10-28 23:16:15,569 INFO L704 BuchiCegarLoop]: Abstraction has 162 states and 234 transitions. [2021-10-28 23:16:15,570 INFO L587 BuchiCegarLoop]: Abstraction has 162 states and 234 transitions. [2021-10-28 23:16:15,570 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:16:15,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 234 transitions. [2021-10-28 23:16:15,573 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2021-10-28 23:16:15,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:16:15,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:16:15,574 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:16:15,575 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:16:15,575 INFO L791 eck$LassoCheckResult]: Stem: 566#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 517#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 518#L865 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 520#L873 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 521#L140 assume 0 != main_~tmp~0; 534#L113 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 495#L816-1 [2021-10-28 23:16:15,575 INFO L793 eck$LassoCheckResult]: Loop: 495#L816-1 assume !false; 530#L166 assume test_~splverifierCounter~0 < 4; 482#L167 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 448#L175 assume !(0 != test_~tmp~1); 450#L175-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 562#L185 assume !(0 != test_~tmp___0~0); 544#L185-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 565#L195 assume 0 != test_~tmp___2~0; 539#L201-1 assume !(0 != ~pumpRunning~0); 489#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 457#L295 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 459#L269-1 assume !(0 == ~pumpRunning~0); 473#L244 havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 474#L953 __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 542#L816 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 495#L816-1 [2021-10-28 23:16:15,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-10-28 23:16:15,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:15,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551111603] [2021-10-28 23:16:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:15,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:15,706 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:15,844 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:16:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1966055757, now seen corresponding path program 1 times [2021-10-28 23:16:15,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:15,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428966943] [2021-10-28 23:16:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:15,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:16:15,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:15,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428966943] [2021-10-28 23:16:15,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428966943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:15,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:15,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:16:15,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261886990] [2021-10-28 23:16:15,887 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:16:15,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:15,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:16:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:16:15,893 INFO L87 Difference]: Start difference. First operand 162 states and 234 transitions. cyclomatic complexity: 75 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:16:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:16,016 INFO L93 Difference]: Finished difference Result 201 states and 274 transitions. [2021-10-28 23:16:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:16:16,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 274 transitions. [2021-10-28 23:16:16,022 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-10-28 23:16:16,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 274 transitions. [2021-10-28 23:16:16,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2021-10-28 23:16:16,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2021-10-28 23:16:16,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 274 transitions. [2021-10-28 23:16:16,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:16:16,038 INFO L681 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-10-28 23:16:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 274 transitions. [2021-10-28 23:16:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-10-28 23:16:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.36318407960199) internal successors, (274), 200 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:16:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 274 transitions. [2021-10-28 23:16:16,072 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-10-28 23:16:16,073 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-10-28 23:16:16,073 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:16:16,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 274 transitions. [2021-10-28 23:16:16,076 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-10-28 23:16:16,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:16:16,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:16:16,077 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:16:16,077 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] [2021-10-28 23:16:16,077 INFO L791 eck$LassoCheckResult]: Stem: 942#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 889#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 890#L865 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 892#L873 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 893#L140 assume 0 != main_~tmp~0; 906#L113 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 941#L816-1 [2021-10-28 23:16:16,078 INFO L793 eck$LassoCheckResult]: Loop: 941#L816-1 assume !false; 994#L166 assume test_~splverifierCounter~0 < 4; 993#L167 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 992#L175 assume !(0 != test_~tmp~1); 944#L175-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 945#L185 assume !(0 != test_~tmp___0~0); 989#L185-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 987#L195 assume 0 != test_~tmp___2~0; 986#L201-1 assume !(0 != ~pumpRunning~0); 937#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 826#L295 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 827#L269-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 924#L961-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~11 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 912#L966-1 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 913#L414-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 922#L414-5 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 897#L420-1 processEnvironment__wrappee__methaneQuery_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~2 := processEnvironment__wrappee__methaneQuery_#t~ret12;havoc processEnvironment__wrappee__methaneQuery_#t~ret12; 898#L273-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~2); 846#L244 havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 998#L953 __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 996#L816 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 941#L816-1 [2021-10-28 23:16:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-10-28 23:16:16,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:16,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883295696] [2021-10-28 23:16:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:16,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:16,163 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:16,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:16:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:16,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1687938725, now seen corresponding path program 1 times [2021-10-28 23:16:16,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:16,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454272967] [2021-10-28 23:16:16,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:16,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:16:16,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:16,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454272967] [2021-10-28 23:16:16,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454272967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:16,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:16,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:16:16,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656742992] [2021-10-28 23:16:16,311 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:16:16,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:16:16,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:16:16,313 INFO L87 Difference]: Start difference. First operand 201 states and 274 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:16:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:16,432 INFO L93 Difference]: Finished difference Result 567 states and 762 transitions. [2021-10-28 23:16:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:16:16,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 567 states and 762 transitions. [2021-10-28 23:16:16,445 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 410 [2021-10-28 23:16:16,452 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 567 states to 567 states and 762 transitions. [2021-10-28 23:16:16,453 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 567 [2021-10-28 23:16:16,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 567 [2021-10-28 23:16:16,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 567 states and 762 transitions. [2021-10-28 23:16:16,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:16:16,457 INFO L681 BuchiCegarLoop]: Abstraction has 567 states and 762 transitions. [2021-10-28 23:16:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states and 762 transitions. [2021-10-28 23:16:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 213. [2021-10-28 23:16:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 213 states have (on average 1.3427230046948357) internal successors, (286), 212 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) [2021-10-28 23:16:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 286 transitions. [2021-10-28 23:16:16,495 INFO L704 BuchiCegarLoop]: Abstraction has 213 states and 286 transitions. [2021-10-28 23:16:16,495 INFO L587 BuchiCegarLoop]: Abstraction has 213 states and 286 transitions. [2021-10-28 23:16:16,495 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:16:16,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 213 states and 286 transitions. [2021-10-28 23:16:16,498 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 150 [2021-10-28 23:16:16,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:16:16,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:16:16,502 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:16:16,502 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] [2021-10-28 23:16:16,502 INFO L791 eck$LassoCheckResult]: Stem: 1733#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1673#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1674#L865 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1676#L873 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1677#L140 assume 0 != main_~tmp~0; 1693#L113 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1647#L816-1 [2021-10-28 23:16:16,503 INFO L793 eck$LassoCheckResult]: Loop: 1647#L816-1 assume !false; 1689#L166 assume test_~splverifierCounter~0 < 4; 1721#L167 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 1595#L175 assume !(0 != test_~tmp~1); 1597#L175-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1726#L185 assume !(0 != test_~tmp___0~0); 1704#L185-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 1730#L195 assume 0 != test_~tmp___2~0; 1699#L201-1 assume !(0 != ~pumpRunning~0); 1724#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1604#L295 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 1605#L269-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 1714#L961-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~11 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 1715#L966-1 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1711#L414-3 assume !(0 != isHighWaterLevel_~tmp~5);isHighWaterLevel_~tmp___0~1 := 1; 1712#L414-5 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 1683#L420-1 processEnvironment__wrappee__methaneQuery_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~2 := processEnvironment__wrappee__methaneQuery_#t~ret12;havoc processEnvironment__wrappee__methaneQuery_#t~ret12; 1684#L273-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~2); 1621#L244 havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 1622#L953 __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 1702#L816 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 1647#L816-1 [2021-10-28 23:16:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-10-28 23:16:16,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:16,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329331311] [2021-10-28 23:16:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:16,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:16,547 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:16,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:16:16,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:16,625 INFO L85 PathProgramCache]: Analyzing trace with hash 87068637, now seen corresponding path program 1 times [2021-10-28 23:16:16,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:16,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463713987] [2021-10-28 23:16:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:16,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:16:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:16:16,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:16:16,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463713987] [2021-10-28 23:16:16,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463713987] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:16:16,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:16:16,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:16:16,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385301259] [2021-10-28 23:16:16,676 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:16:16,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:16:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:16:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:16:16,677 INFO L87 Difference]: Start difference. First operand 213 states and 286 transitions. cyclomatic complexity: 76 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:16:16,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:16:16,859 INFO L93 Difference]: Finished difference Result 660 states and 880 transitions. [2021-10-28 23:16:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:16:16,859 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 660 states and 880 transitions. [2021-10-28 23:16:16,868 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 484 [2021-10-28 23:16:16,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 660 states to 660 states and 880 transitions. [2021-10-28 23:16:16,876 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 660 [2021-10-28 23:16:16,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 660 [2021-10-28 23:16:16,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 660 states and 880 transitions. [2021-10-28 23:16:16,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:16:16,879 INFO L681 BuchiCegarLoop]: Abstraction has 660 states and 880 transitions. [2021-10-28 23:16:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states and 880 transitions. [2021-10-28 23:16:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 231. [2021-10-28 23:16:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 231 states have (on average 1.316017316017316) internal successors, (304), 230 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:16:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 304 transitions. [2021-10-28 23:16:16,893 INFO L704 BuchiCegarLoop]: Abstraction has 231 states and 304 transitions. [2021-10-28 23:16:16,893 INFO L587 BuchiCegarLoop]: Abstraction has 231 states and 304 transitions. [2021-10-28 23:16:16,894 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:16:16,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states and 304 transitions. [2021-10-28 23:16:16,896 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 162 [2021-10-28 23:16:16,896 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:16:16,896 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:16:16,897 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:16:16,898 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] [2021-10-28 23:16:16,898 INFO L791 eck$LassoCheckResult]: Stem: 2635#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(21);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(30);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(9);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(21);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(30);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2560#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 2561#L865 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 2563#L873 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 2564#L140 assume 0 != main_~tmp~0; 2580#L113 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2633#L816-1 [2021-10-28 23:16:16,898 INFO L793 eck$LassoCheckResult]: Loop: 2633#L816-1 assume !false; 2613#L166 assume test_~splverifierCounter~0 < 4; 2519#L167 test_~tmp~1 := test_#t~nondet8;havoc test_#t~nondet8; 2484#L175 assume !(0 != test_~tmp~1); 2486#L175-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 2621#L185 assume !(0 != test_~tmp___0~0); 2594#L185-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 2625#L195 assume 0 != test_~tmp___2~0; 2617#L201-1 assume !(0 != ~pumpRunning~0); 2618#L237 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 2493#L295 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret12, processEnvironment__wrappee__methaneQuery_~tmp~2;havoc processEnvironment__wrappee__methaneQuery_~tmp~2; 2494#L269-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 2606#L961-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 2590#L966-1 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 2591#L414-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 2649#L414-5 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 2569#L420-1 processEnvironment__wrappee__methaneQuery_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~2 := processEnvironment__wrappee__methaneQuery_#t~ret12;havoc processEnvironment__wrappee__methaneQuery_#t~ret12; 2570#L273-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~2); 2511#L244 havoc __utac_acc__Specification4_spec__1_#t~ret68, __utac_acc__Specification4_spec__1_#t~ret69, __utac_acc__Specification4_spec__1_~tmp~9, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~9;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~10;havoc getWaterLevel_~retValue_acc~10;getWaterLevel_~retValue_acc~10 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~10; 2688#L953 __utac_acc__Specification4_spec__1_#t~ret68 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~9 := __utac_acc__Specification4_spec__1_#t~ret68;havoc __utac_acc__Specification4_spec__1_#t~ret68; 2686#L816 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9); 2633#L816-1 [2021-10-28 23:16:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 5 times [2021-10-28 23:16:16,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:16,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714496711] [2021-10-28 23:16:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:16,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:16,938 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:16,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:16:16,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:16,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1926970201, now seen corresponding path program 1 times [2021-10-28 23:16:16,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:16,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707639369] [2021-10-28 23:16:16,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:16,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:16,997 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:17,007 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:16:17,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:16:17,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1911925901, now seen corresponding path program 1 times [2021-10-28 23:16:17,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:16:17,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128802183] [2021-10-28 23:16:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:16:17,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:16:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:17,045 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:16:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:16:17,100 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:17:33,257 WARN L207 SmtUtils]: Spent 1.26 m on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-10-28 23:18:53,437 WARN L207 SmtUtils]: Spent 38.62 s on a formula simplification that was a NOOP. DAG size: 433 [2021-10-28 23:18:53,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:18:53 BoogieIcfgContainer [2021-10-28 23:18:53,645 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:18:53,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:18:53,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:18:53,646 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:18:53,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:16:13" (3/4) ... [2021-10-28 23:18:53,650 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:18:53,705 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:18:53,706 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:18:53,707 INFO L168 Benchmark]: Toolchain (without parser) took 162377.74 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 90.5 MB in the beginning and 91.0 MB in the end (delta: -540.0 kB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:53,708 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 57.4 MB in the beginning and 57.4 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:18:53,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 716.97 ms. Allocated memory is still 125.8 MB. Free memory was 90.2 MB in the beginning and 93.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:53,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 140.88 ms. Allocated memory is still 125.8 MB. Free memory was 93.7 MB in the beginning and 90.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:53,710 INFO L168 Benchmark]: Boogie Preprocessor took 116.82 ms. Allocated memory is still 125.8 MB. Free memory was 90.1 MB in the beginning and 87.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:53,710 INFO L168 Benchmark]: RCFGBuilder took 1407.78 ms. Allocated memory is still 125.8 MB. Free memory was 87.4 MB in the beginning and 44.8 MB in the end (delta: 42.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:53,711 INFO L168 Benchmark]: BuchiAutomizer took 159926.14 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 44.6 MB in the beginning and 93.1 MB in the end (delta: -48.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:53,712 INFO L168 Benchmark]: Witness Printer took 60.37 ms. Allocated memory is still 165.7 MB. Free memory was 93.1 MB in the beginning and 91.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:53,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory was 57.4 MB in the beginning and 57.4 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 716.97 ms. Allocated memory is still 125.8 MB. Free memory was 90.2 MB in the beginning and 93.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 140.88 ms. Allocated memory is still 125.8 MB. Free memory was 93.7 MB in the beginning and 90.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 116.82 ms. Allocated memory is still 125.8 MB. Free memory was 90.1 MB in the beginning and 87.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1407.78 ms. Allocated memory is still 125.8 MB. Free memory was 87.4 MB in the beginning and 44.8 MB in the end (delta: 42.6 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 159926.14 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 44.6 MB in the beginning and 93.1 MB in the end (delta: -48.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 16.1 GB. * Witness Printer took 60.37 ms. Allocated memory is still 165.7 MB. Free memory was 93.1 MB in the beginning and 91.0 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 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 231 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 159.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 158.5s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 900 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 231 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 957 SDtfs, 1900 SDslu, 1792 SDs, 0 SdLazy, 220 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 165]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30628} State at position 1 is {NULL=0, NULL=0, NULL=30646, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e045df2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f63fb70=0, retValue_acc=1, NULL=30628, NULL=0, NULL=30631, methaneLevelCritical=0, NULL=30649, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63129955=0, retValue_acc=0, tmp___1=0, NULL=30637, NULL=30643, NULL=0, cleanupTimeShifts=4, tmp=0, NULL=30633, NULL=0, NULL=0, waterLevel=1, tmp___0=0, NULL=30641, \result=1, head=0, pumpRunning=0, tmp=1, NULL=30632, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31e78ce6=0, \result=1, NULL=0, NULL=30635, NULL=0, NULL=0, NULL=0, tmp=1, tmp=1, NULL=30650, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4009a24f=0, tmp=0, head=0, NULL=30636, NULL=0, NULL=30647, tmp=0, NULL=0, retValue_acc=0, NULL=0, NULL=30652, NULL=30648, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3293ddba=69, NULL=30651, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bfd3504=0, NULL=0, tmp___0=0, NULL=0, NULL=30656, NULL=0, NULL=30644, NULL=30639, tmp___0=0, NULL=30645, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=30654, \result=0, NULL=30638, NULL=30642, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=30655, tmp___2=69, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=30629, NULL=30634, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6560e85a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77c6b0f6=0, NULL=30653, NULL=30630, NULL=30640, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73aad7bb=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L609] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; [L131] int retValue_acc ; [L132] int tmp ; [L869] int retValue_acc ; [L872] retValue_acc = 1 [L873] return (retValue_acc); [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 Loop: [L165] COND TRUE 1 [L167] COND TRUE splverifierCounter < 4 [L173] tmp = __VERIFIER_nondet_int() [L175] COND FALSE !(\read(tmp)) [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L292] int tmp ; [L295] COND FALSE !(\read(pumpRunning)) [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L406] int retValue_acc ; [L407] int tmp ; [L408] int tmp___0 ; [L958] int retValue_acc ; [L961] COND TRUE waterLevel < 2 [L962] retValue_acc = 1 [L963] return (retValue_acc); [L412] tmp = isHighWaterSensorDry() [L414] COND TRUE \read(tmp) [L415] tmp___0 = 0 [L419] retValue_acc = tmp___0 [L420] return (retValue_acc); [L271] tmp = isHighWaterLevel() [L273] COND FALSE !(\read(tmp)) [L809] int tmp ; [L810] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = waterLevel [L953] return (retValue_acc); [L814] tmp = getWaterLevel() [L816] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:18:53,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8923e23-acd3-4ae7-85f1-e6fd0f694d96/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...