./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-sets/test_add-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed7fc1ee8e8624c54bbfaff1033820d20aa5fb88ac8eae06fb8e7107f72c3762 ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:59:33,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:59:33,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:59:34,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:59:34,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:59:34,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:59:34,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:59:34,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:59:34,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:59:34,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:59:34,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:59:34,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:59:34,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:59:34,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:59:34,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:59:34,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:59:34,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:59:34,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:59:34,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:59:34,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:59:34,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:59:34,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:59:34,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:59:34,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:59:34,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:59:34,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:59:34,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:59:34,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:59:34,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:59:34,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:59:34,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:59:34,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:59:34,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:59:34,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:59:34,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:59:34,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:59:34,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:59:34,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:59:34,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:59:34,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:59:34,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:59:34,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:59:34,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:59:34,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:59:34,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:59:34,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:59:34,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:59:34,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:59:34,178 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:59:34,178 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:59:34,179 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:59:34,179 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:59:34,179 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:59:34,179 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:59:34,179 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:59:34,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:59:34,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:59:34,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:59:34,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:59:34,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:59:34,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:59:34,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:59:34,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:59:34,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:59:34,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:59:34,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:59:34,182 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:59:34,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:59:34,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:59:34,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:59:34,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:59:34,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:59:34,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:59:34,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:59:34,184 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:59:34,184 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_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed7fc1ee8e8624c54bbfaff1033820d20aa5fb88ac8eae06fb8e7107f72c3762 [2021-10-21 19:59:34,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:59:34,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:59:34,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:59:34,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:59:34,451 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:59:34,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/ldv-sets/test_add-1.i [2021-10-21 19:59:34,542 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/data/eede14ab2/370f9bafa181447c9de1516cdec4e686/FLAGe966c4d7d [2021-10-21 19:59:35,095 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:59:35,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/sv-benchmarks/c/ldv-sets/test_add-1.i [2021-10-21 19:59:35,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/data/eede14ab2/370f9bafa181447c9de1516cdec4e686/FLAGe966c4d7d [2021-10-21 19:59:35,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/data/eede14ab2/370f9bafa181447c9de1516cdec4e686 [2021-10-21 19:59:35,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:59:35,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:59:35,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:59:35,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:59:35,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:59:35,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d7e161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35, skipping insertion in model container [2021-10-21 19:59:35,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:59:35,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:59:35,729 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_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805] [2021-10-21 19:59:35,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:59:35,739 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:59:35,783 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_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805] [2021-10-21 19:59:35,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:59:35,815 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:59:35,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35 WrapperNode [2021-10-21 19:59:35,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:59:35,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:59:35,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:59:35,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:59:35,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:59:35,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:59:35,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:59:35,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:59:35,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:59:35,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:59:35,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:59:35,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:59:35,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (1/1) ... [2021-10-21 19:59:35,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:59:35,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:59:35,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:59:35,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:59:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:59:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:59:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 19:59:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 19:59:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:59:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 19:59:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-21 19:59:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:59:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:59:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:59:36,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:59:36,359 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-21 19:59:36,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:36 BoogieIcfgContainer [2021-10-21 19:59:36,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:59:36,362 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:59:36,362 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:59:36,366 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:59:36,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:59:36,367 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:59:35" (1/3) ... [2021-10-21 19:59:36,368 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3660045d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:59:36, skipping insertion in model container [2021-10-21 19:59:36,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:59:36,369 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:59:35" (2/3) ... [2021-10-21 19:59:36,369 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3660045d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:59:36, skipping insertion in model container [2021-10-21 19:59:36,369 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:59:36,370 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:36" (3/3) ... [2021-10-21 19:59:36,371 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_add-1.i [2021-10-21 19:59:36,416 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:59:36,416 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:59:36,416 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:59:36,417 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:59:36,417 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:59:36,417 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:59:36,417 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:59:36,417 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:59:36,432 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:36,452 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-21 19:59:36,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:59:36,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:59:36,459 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:59:36,459 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:59:36,459 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:59:36,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:36,463 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-10-21 19:59:36,463 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:59:36,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:59:36,464 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:59:36,464 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:59:36,472 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string2.base, #t~string2.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string2.base, #t~string2.offset, 1);call write~init~int(0, #t~string2.base, 1 + #t~string2.offset, 1);call #t~string3.base, #t~string3.offset := #Ultimate.allocOnStack(12);call ~#s1~0.base, ~#s1~0.offset := #Ultimate.allocOnStack(8);call write~init~$Pointer$(~#s1~0.base, ~#s1~0.offset, ~#s1~0.base, ~#s1~0.offset, 4);call write~init~$Pointer$(~#s1~0.base, ~#s1~0.offset, ~#s1~0.base, 4 + ~#s1~0.offset, 4); 9#L-1true havoc main_#res;havoc foo_#t~nondet29, foo_#t~ret30, foo_~j~0;foo_~j~0 := foo_#t~nondet29;havoc foo_#t~nondet29;ldv_set_add_#in~new, ldv_set_add_#in~s.base, ldv_set_add_#in~s.offset := foo_~j~0, ~#s1~0.base, ~#s1~0.offset;havoc ldv_set_add_#t~ret19, ldv_set_add_#t~ret20.base, ldv_set_add_#t~ret20.offset, ldv_set_add_~le~0.base, ldv_set_add_~le~0.offset, ldv_set_add_~new, ldv_set_add_~s.base, ldv_set_add_~s.offset;ldv_set_add_~new := ldv_set_add_#in~new;ldv_set_add_~s.base, ldv_set_add_~s.offset := ldv_set_add_#in~s.base, ldv_set_add_#in~s.offset;ldv_is_in_set_#in~e, ldv_is_in_set_#in~s.base, ldv_is_in_set_#in~s.offset := ldv_set_add_~new, ldv_set_add_~s.base, ldv_set_add_~s.offset;havoc ldv_is_in_set_#res;havoc ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset, ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset, ldv_is_in_set_#t~mem27, ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset, ldv_is_in_set_~__mptr~4.base, ldv_is_in_set_~__mptr~4.offset, ldv_is_in_set_~e, ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset, ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset;ldv_is_in_set_~e := ldv_is_in_set_#in~e;ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset := ldv_is_in_set_#in~s.base, ldv_is_in_set_#in~s.offset;havoc ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset;call ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset := read~$Pointer$(ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset, 4);ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset := ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset;havoc ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset;ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset := ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset - 4; 7#L652-3true [2021-10-21 19:59:36,473 INFO L793 eck$LassoCheckResult]: Loop: 7#L652-3true assume !!(ldv_is_in_set_~m~1.base != ldv_is_in_set_~s.base || 4 + ldv_is_in_set_~m~1.offset != ldv_is_in_set_~s.offset);call ldv_is_in_set_#t~mem27 := read~int(ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset, 4); 20#L653true assume !(ldv_is_in_set_#t~mem27 == ldv_is_in_set_~e);havoc ldv_is_in_set_#t~mem27; 16#L652-2true call ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset := read~$Pointer$(ldv_is_in_set_~m~1.base, 4 + ldv_is_in_set_~m~1.offset, 4);ldv_is_in_set_~__mptr~4.base, ldv_is_in_set_~__mptr~4.offset := ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset;havoc ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset;ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset := ldv_is_in_set_~__mptr~4.base, ldv_is_in_set_~__mptr~4.offset - 4; 7#L652-3true [2021-10-21 19:59:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:36,480 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-21 19:59:36,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:36,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101533401] [2021-10-21 19:59:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:36,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:59:36,681 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:59:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:59:36,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:59:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash 39883, now seen corresponding path program 1 times [2021-10-21 19:59:36,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:36,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384065649] [2021-10-21 19:59:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:36,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:59:36,787 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:59:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:59:36,809 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:59:36,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:36,811 INFO L82 PathProgramCache]: Analyzing trace with hash 28698825, now seen corresponding path program 1 times [2021-10-21 19:59:36,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:36,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212532361] [2021-10-21 19:59:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:36,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:36,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:36,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212532361] [2021-10-21 19:59:36,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212532361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:36,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:36,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:59:36,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687186425] [2021-10-21 19:59:37,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:37,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:59:37,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:59:37,192 INFO L87 Difference]: Start difference. First operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:37,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:37,268 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-10-21 19:59:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:59:37,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 31 transitions. [2021-10-21 19:59:37,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:59:37,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 14 states and 14 transitions. [2021-10-21 19:59:37,277 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-21 19:59:37,277 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-21 19:59:37,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 14 transitions. [2021-10-21 19:59:37,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:59:37,278 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-21 19:59:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 14 transitions. [2021-10-21 19:59:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-21 19:59:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.0) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-21 19:59:37,304 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-21 19:59:37,304 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-21 19:59:37,304 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:59:37,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 14 transitions. [2021-10-21 19:59:37,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:59:37,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:59:37,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:59:37,306 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:59:37,306 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:59:37,307 INFO L791 eck$LassoCheckResult]: Stem: 69#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string2.base, #t~string2.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string2.base, #t~string2.offset, 1);call write~init~int(0, #t~string2.base, 1 + #t~string2.offset, 1);call #t~string3.base, #t~string3.offset := #Ultimate.allocOnStack(12);call ~#s1~0.base, ~#s1~0.offset := #Ultimate.allocOnStack(8);call write~init~$Pointer$(~#s1~0.base, ~#s1~0.offset, ~#s1~0.base, ~#s1~0.offset, 4);call write~init~$Pointer$(~#s1~0.base, ~#s1~0.offset, ~#s1~0.base, 4 + ~#s1~0.offset, 4); 70#L-1 havoc main_#res;havoc foo_#t~nondet29, foo_#t~ret30, foo_~j~0;foo_~j~0 := foo_#t~nondet29;havoc foo_#t~nondet29;ldv_set_add_#in~new, ldv_set_add_#in~s.base, ldv_set_add_#in~s.offset := foo_~j~0, ~#s1~0.base, ~#s1~0.offset;havoc ldv_set_add_#t~ret19, ldv_set_add_#t~ret20.base, ldv_set_add_#t~ret20.offset, ldv_set_add_~le~0.base, ldv_set_add_~le~0.offset, ldv_set_add_~new, ldv_set_add_~s.base, ldv_set_add_~s.offset;ldv_set_add_~new := ldv_set_add_#in~new;ldv_set_add_~s.base, ldv_set_add_~s.offset := ldv_set_add_#in~s.base, ldv_set_add_#in~s.offset;ldv_is_in_set_#in~e, ldv_is_in_set_#in~s.base, ldv_is_in_set_#in~s.offset := ldv_set_add_~new, ldv_set_add_~s.base, ldv_set_add_~s.offset;havoc ldv_is_in_set_#res;havoc ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset, ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset, ldv_is_in_set_#t~mem27, ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset, ldv_is_in_set_~__mptr~4.base, ldv_is_in_set_~__mptr~4.offset, ldv_is_in_set_~e, ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset, ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset;ldv_is_in_set_~e := ldv_is_in_set_#in~e;ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset := ldv_is_in_set_#in~s.base, ldv_is_in_set_#in~s.offset;havoc ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset;call ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset := read~$Pointer$(ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset, 4);ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset := ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset;havoc ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset;ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset := ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset - 4; 73#L652-3 assume !(ldv_is_in_set_~m~1.base != ldv_is_in_set_~s.base || 4 + ldv_is_in_set_~m~1.offset != ldv_is_in_set_~s.offset); 74#L652-4 ldv_is_in_set_#res := 0; 76#L657 ldv_set_add_#t~ret19 := ldv_is_in_set_#res; 77#L633 assume 0 == ldv_set_add_#t~ret19;havoc ldv_set_add_#t~ret19;havoc ldv_set_add_~le~0.base, ldv_set_add_~le~0.offset;ldv_successful_malloc_#in~size := 12;havoc ldv_successful_malloc_#res.base, ldv_successful_malloc_#res.offset;havoc ldv_successful_malloc_#t~malloc7.base, ldv_successful_malloc_#t~malloc7.offset, ldv_successful_malloc_~size, ldv_successful_malloc_~ptr~0.base, ldv_successful_malloc_~ptr~0.offset;ldv_successful_malloc_~size := ldv_successful_malloc_#in~size;call ldv_successful_malloc_#t~malloc7.base, ldv_successful_malloc_#t~malloc7.offset := #Ultimate.allocOnHeap(ldv_successful_malloc_~size);ldv_successful_malloc_~ptr~0.base, ldv_successful_malloc_~ptr~0.offset := ldv_successful_malloc_#t~malloc7.base, ldv_successful_malloc_#t~malloc7.offset;havoc ldv_successful_malloc_#t~malloc7.base, ldv_successful_malloc_#t~malloc7.offset;assume_abort_if_not_#in~cond := (if ldv_successful_malloc_~ptr~0.base != 0 || ldv_successful_malloc_~ptr~0.offset != 0 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; 67#L565 assume !(0 == assume_abort_if_not_~cond); 68#L564 ldv_successful_malloc_#res.base, ldv_successful_malloc_#res.offset := ldv_successful_malloc_~ptr~0.base, ldv_successful_malloc_~ptr~0.offset; 80#L578 ldv_set_add_#t~ret20.base, ldv_set_add_#t~ret20.offset := ldv_successful_malloc_#res.base, ldv_successful_malloc_#res.offset;ldv_set_add_~le~0.base, ldv_set_add_~le~0.offset := ldv_set_add_#t~ret20.base, ldv_set_add_#t~ret20.offset;havoc ldv_set_add_#t~ret20.base, ldv_set_add_#t~ret20.offset;call write~int(ldv_set_add_~new, ldv_set_add_~le~0.base, ldv_set_add_~le~0.offset, 4);ldv_list_add_#in~new.base, ldv_list_add_#in~new.offset, ldv_list_add_#in~head.base, ldv_list_add_#in~head.offset := ldv_set_add_~le~0.base, 4 + ldv_set_add_~le~0.offset, ldv_set_add_~s.base, ldv_set_add_~s.offset;havoc ldv_list_add_#t~mem8.base, ldv_list_add_#t~mem8.offset, ldv_list_add_~new.base, ldv_list_add_~new.offset, ldv_list_add_~head.base, ldv_list_add_~head.offset;ldv_list_add_~new.base, ldv_list_add_~new.offset := ldv_list_add_#in~new.base, ldv_list_add_#in~new.offset;ldv_list_add_~head.base, ldv_list_add_~head.offset := ldv_list_add_#in~head.base, ldv_list_add_#in~head.offset;call ldv_list_add_#t~mem8.base, ldv_list_add_#t~mem8.offset := read~$Pointer$(ldv_list_add_~head.base, ldv_list_add_~head.offset, 4);__ldv_list_add_#in~new.base, __ldv_list_add_#in~new.offset, __ldv_list_add_#in~prev.base, __ldv_list_add_#in~prev.offset, __ldv_list_add_#in~next.base, __ldv_list_add_#in~next.offset := ldv_list_add_~new.base, ldv_list_add_~new.offset, ldv_list_add_~head.base, ldv_list_add_~head.offset, ldv_list_add_#t~mem8.base, ldv_list_add_#t~mem8.offset;havoc __ldv_list_add_~new.base, __ldv_list_add_~new.offset, __ldv_list_add_~prev.base, __ldv_list_add_~prev.offset, __ldv_list_add_~next.base, __ldv_list_add_~next.offset;__ldv_list_add_~new.base, __ldv_list_add_~new.offset := __ldv_list_add_#in~new.base, __ldv_list_add_#in~new.offset;__ldv_list_add_~prev.base, __ldv_list_add_~prev.offset := __ldv_list_add_#in~prev.base, __ldv_list_add_#in~prev.offset;__ldv_list_add_~next.base, __ldv_list_add_~next.offset := __ldv_list_add_#in~next.base, __ldv_list_add_#in~next.offset;call write~$Pointer$(__ldv_list_add_~new.base, __ldv_list_add_~new.offset, __ldv_list_add_~next.base, 4 + __ldv_list_add_~next.offset, 4);call write~$Pointer$(__ldv_list_add_~next.base, __ldv_list_add_~next.offset, __ldv_list_add_~new.base, __ldv_list_add_~new.offset, 4);call write~$Pointer$(__ldv_list_add_~prev.base, __ldv_list_add_~prev.offset, __ldv_list_add_~new.base, 4 + __ldv_list_add_~new.offset, 4);call write~$Pointer$(__ldv_list_add_~new.base, __ldv_list_add_~new.offset, __ldv_list_add_~prev.base, __ldv_list_add_~prev.offset, 4); 79#L589 havoc ldv_list_add_#t~mem8.base, ldv_list_add_#t~mem8.offset; 78#L632 ldv_is_in_set_#in~e, ldv_is_in_set_#in~s.base, ldv_is_in_set_#in~s.offset := foo_~j~0, ~#s1~0.base, ~#s1~0.offset;havoc ldv_is_in_set_#res;havoc ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset, ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset, ldv_is_in_set_#t~mem27, ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset, ldv_is_in_set_~__mptr~4.base, ldv_is_in_set_~__mptr~4.offset, ldv_is_in_set_~e, ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset, ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset;ldv_is_in_set_~e := ldv_is_in_set_#in~e;ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset := ldv_is_in_set_#in~s.base, ldv_is_in_set_#in~s.offset;havoc ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset;call ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset := read~$Pointer$(ldv_is_in_set_~s.base, ldv_is_in_set_~s.offset, 4);ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset := ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset;havoc ldv_is_in_set_#t~mem25.base, ldv_is_in_set_#t~mem25.offset;ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset := ldv_is_in_set_~__mptr~3.base, ldv_is_in_set_~__mptr~3.offset - 4; 75#L652-8 [2021-10-21 19:59:37,307 INFO L793 eck$LassoCheckResult]: Loop: 75#L652-8 assume !!(ldv_is_in_set_~m~1.base != ldv_is_in_set_~s.base || 4 + ldv_is_in_set_~m~1.offset != ldv_is_in_set_~s.offset);call ldv_is_in_set_#t~mem27 := read~int(ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset, 4); 71#L653-1 assume !(ldv_is_in_set_#t~mem27 == ldv_is_in_set_~e);havoc ldv_is_in_set_#t~mem27; 72#L652-7 call ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset := read~$Pointer$(ldv_is_in_set_~m~1.base, 4 + ldv_is_in_set_~m~1.offset, 4);ldv_is_in_set_~__mptr~4.base, ldv_is_in_set_~__mptr~4.offset := ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset;havoc ldv_is_in_set_#t~mem26.base, ldv_is_in_set_#t~mem26.offset;ldv_is_in_set_~m~1.base, ldv_is_in_set_~m~1.offset := ldv_is_in_set_~__mptr~4.base, ldv_is_in_set_~__mptr~4.offset - 4; 75#L652-8 [2021-10-21 19:59:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 112353747, now seen corresponding path program 1 times [2021-10-21 19:59:37,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:37,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963086276] [2021-10-21 19:59:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:37,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:59:37,457 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:59:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:59:37,575 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:59:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:37,575 INFO L82 PathProgramCache]: Analyzing trace with hash 79603, now seen corresponding path program 1 times [2021-10-21 19:59:37,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:37,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007737069] [2021-10-21 19:59:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:37,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:59:37,583 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:59:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:59:37,590 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:59:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:59:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1351003105, now seen corresponding path program 1 times [2021-10-21 19:59:37,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:59:37,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763070773] [2021-10-21 19:59:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:59:37,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:59:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:59:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:38,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:38,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763070773] [2021-10-21 19:59:38,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763070773] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:59:38,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:59:38,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 19:59:38,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507286549] [2021-10-21 19:59:38,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:38,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:59:38,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:59:38,214 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. cyclomatic complexity: 1 Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:38,746 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-21 19:59:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:59:38,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 12 transitions. [2021-10-21 19:59:38,748 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:59:38,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2021-10-21 19:59:38,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:59:38,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:59:38,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:59:38,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:59:38,748 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:59:38,748 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:59:38,749 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:59:38,749 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:59:38,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:59:38,749 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:59:38,749 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:59:38,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:59:38 BoogieIcfgContainer [2021-10-21 19:59:38,753 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:59:38,753 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:59:38,753 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:59:38,754 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:59:38,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:59:36" (3/4) ... [2021-10-21 19:59:38,765 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:59:38,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:59:38,767 INFO L168 Benchmark]: Toolchain (without parser) took 3412.74 ms. Allocated memory is still 132.1 MB. Free memory was 98.6 MB in the beginning and 53.1 MB in the end (delta: 45.5 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:59:38,767 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 90.2 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:59:38,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.54 ms. Allocated memory is still 132.1 MB. Free memory was 98.3 MB in the beginning and 99.1 MB in the end (delta: -781.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:59:38,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 132.1 MB. Free memory was 99.1 MB in the beginning and 97.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:59:38,771 INFO L168 Benchmark]: Boogie Preprocessor took 30.09 ms. Allocated memory is still 132.1 MB. Free memory was 97.0 MB in the beginning and 95.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:59:38,775 INFO L168 Benchmark]: RCFGBuilder took 467.02 ms. Allocated memory is still 132.1 MB. Free memory was 95.6 MB in the beginning and 79.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:59:38,776 INFO L168 Benchmark]: BuchiAutomizer took 2391.18 ms. Allocated memory is still 132.1 MB. Free memory was 79.5 MB in the beginning and 53.1 MB in the end (delta: 26.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:59:38,776 INFO L168 Benchmark]: Witness Printer took 11.65 ms. Allocated memory is still 132.1 MB. Free memory is still 53.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:59:38,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 90.2 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 461.54 ms. Allocated memory is still 132.1 MB. Free memory was 98.3 MB in the beginning and 99.1 MB in the end (delta: -781.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 132.1 MB. Free memory was 99.1 MB in the beginning and 97.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.09 ms. Allocated memory is still 132.1 MB. Free memory was 97.0 MB in the beginning and 95.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 467.02 ms. Allocated memory is still 132.1 MB. Free memory was 95.6 MB in the beginning and 79.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2391.18 ms. Allocated memory is still 132.1 MB. Free memory was 79.5 MB in the beginning and 53.1 MB in the end (delta: 26.4 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Witness Printer took 11.65 ms. Allocated memory is still 132.1 MB. Free memory is still 53.1 MB. There was no memory consumed. 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic). 2 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.3s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 11.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 23 SDtfs, 49 SDslu, 38 SDs, 0 SdLazy, 52 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 367.9ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:59:38,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbf9d291-4bc8-4921-9ee0-57aa203d0cc0/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...