./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro --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 64bit --witnessprinter.graph.data.programhash c8c2842840d9df2fd19d5532fbc3700c74bea362cad75e31db6c666eb38ff4df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:33:16,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:33:16,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:33:16,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:33:16,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:33:16,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:33:16,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:33:16,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:33:16,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:33:16,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:33:16,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:33:16,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:33:16,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:33:16,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:33:16,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:33:16,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:33:16,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:33:16,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:33:16,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:33:16,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:33:16,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:33:16,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:33:16,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:33:16,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:33:16,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:33:16,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:33:16,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:33:16,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:33:16,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:33:16,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:33:16,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:33:16,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:33:16,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:33:16,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:33:16,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:33:16,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:33:16,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:33:16,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:33:16,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:33:16,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:33:16,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:33:16,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 20:33:16,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:33:16,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:33:16,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:33:16,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:33:16,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:33:16,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:33:16,503 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:33:16,503 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 20:33:16,504 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 20:33:16,504 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 20:33:16,504 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 20:33:16,505 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 20:33:16,505 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 20:33:16,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:33:16,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:33:16,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:33:16,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:33:16,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 20:33:16,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 20:33:16,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 20:33:16,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:33:16,507 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 20:33:16,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:33:16,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 20:33:16,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:33:16,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:33:16,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:33:16,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:33:16,510 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 20:33:16,510 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_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8c2842840d9df2fd19d5532fbc3700c74bea362cad75e31db6c666eb38ff4df [2022-11-18 20:33:16,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:33:16,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:33:16,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:33:16,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:33:16,903 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:33:16,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2022-11-18 20:33:17,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/data/9966bdc88/217076e8db1c4736bc0d7438ad1159e0/FLAGfe28921a6 [2022-11-18 20:33:17,723 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:33:17,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2022-11-18 20:33:17,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/data/9966bdc88/217076e8db1c4736bc0d7438ad1159e0/FLAGfe28921a6 [2022-11-18 20:33:18,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/data/9966bdc88/217076e8db1c4736bc0d7438ad1159e0 [2022-11-18 20:33:18,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:33:18,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:33:18,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:18,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:33:18,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:33:18,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a4c1568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18, skipping insertion in model container [2022-11-18 20:33:18,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:33:18,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:33:18,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:18,432 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:33:18,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:18,474 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:33:18,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18 WrapperNode [2022-11-18 20:33:18,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:18,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:18,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:33:18,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:33:18,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,521 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-11-18 20:33:18,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:18,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:33:18,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:33:18,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:33:18,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:33:18,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:33:18,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:33:18,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:33:18,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (1/1) ... [2022-11-18 20:33:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:33:18,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:18,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:18,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 20:33:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:33:18,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:33:18,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:33:18,774 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:33:18,871 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:33:18,879 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:33:18,882 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:33:18,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:18 BoogieIcfgContainer [2022-11-18 20:33:18,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:33:18,891 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 20:33:18,891 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 20:33:18,898 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 20:33:18,899 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:33:18,899 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:33:18" (1/3) ... [2022-11-18 20:33:18,902 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ce8cd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:33:18, skipping insertion in model container [2022-11-18 20:33:18,902 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:33:18,902 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:18" (2/3) ... [2022-11-18 20:33:18,903 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ce8cd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:33:18, skipping insertion in model container [2022-11-18 20:33:18,903 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:33:18,903 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:18" (3/3) ... [2022-11-18 20:33:18,906 INFO L332 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2022-11-18 20:33:18,998 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 20:33:18,999 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 20:33:18,999 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 20:33:18,999 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 20:33:18,999 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 20:33:19,000 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 20:33:19,000 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 20:33:19,001 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 20:33:19,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-11-18 20:33:19,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-18 20:33:19,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:19,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:19,049 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:33:19,049 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 20:33:19,050 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 20:33:19,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-11-18 20:33:19,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-18 20:33:19,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:33:19,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:33:19,053 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:33:19,054 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-18 20:33:19,063 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~y1~0#1, main_~y2~0#1;havoc main_~y1~0#1;havoc main_~y2~0#1;main_~y1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 9#L20true assume main_~y1~0#1 >= 0 && main_~y2~0#1 >= 0; 8#L22-2true [2022-11-18 20:33:19,064 INFO L750 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~y1~0#1 != main_~y2~0#1); 3#L22true assume main_~y1~0#1 > main_~y2~0#1;main_~y1~0#1 := main_~y1~0#1 - main_~y2~0#1; 8#L22-2true [2022-11-18 20:33:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-18 20:33:19,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:19,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342073578] [2022-11-18 20:33:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:19,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:19,216 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:19,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:19,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:19,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1412, now seen corresponding path program 1 times [2022-11-18 20:33:19,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:19,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903294473] [2022-11-18 20:33:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:19,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:19,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:19,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:19,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash 28693989, now seen corresponding path program 1 times [2022-11-18 20:33:19,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:19,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44518056] [2022-11-18 20:33:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:19,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:19,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:19,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:33:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:19,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:33:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:33:19,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:33:19 BoogieIcfgContainer [2022-11-18 20:33:19,605 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 20:33:19,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:33:19,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:33:19,606 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:33:19,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:18" (3/4) ... [2022-11-18 20:33:19,611 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-18 20:33:19,676 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:33:19,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:33:19,681 INFO L158 Benchmark]: Toolchain (without parser) took 1586.32ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 57.0MB in the beginning and 68.5MB in the end (delta: -11.5MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-11-18 20:33:19,681 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 88.1MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:33:19,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.19ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 56.8MB in the beginning and 98.2MB in the end (delta: -41.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:33:19,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.42ms. Allocated memory is still 119.5MB. Free memory was 98.2MB in the beginning and 97.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:33:19,690 INFO L158 Benchmark]: Boogie Preprocessor took 29.32ms. Allocated memory is still 119.5MB. Free memory was 97.1MB in the beginning and 96.1MB in the end (delta: 981.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:33:19,690 INFO L158 Benchmark]: RCFGBuilder took 332.76ms. Allocated memory is still 119.5MB. Free memory was 96.1MB in the beginning and 87.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:33:19,692 INFO L158 Benchmark]: BuchiAutomizer took 714.21ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 69.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 20:33:19,696 INFO L158 Benchmark]: Witness Printer took 72.62ms. Allocated memory is still 119.5MB. Free memory was 69.9MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:33:19,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 88.1MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.19ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 56.8MB in the beginning and 98.2MB in the end (delta: -41.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.42ms. Allocated memory is still 119.5MB. Free memory was 98.2MB in the beginning and 97.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.32ms. Allocated memory is still 119.5MB. Free memory was 97.1MB in the beginning and 96.1MB in the end (delta: 981.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 332.76ms. Allocated memory is still 119.5MB. Free memory was 96.1MB in the beginning and 87.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 714.21ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 69.9MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 72.62ms. Allocated memory is still 119.5MB. Free memory was 69.9MB in the beginning and 68.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 21]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L17] int y1, y2; [L18] y1 = __VERIFIER_nondet_int() [L19] y2 = __VERIFIER_nondet_int() [L20] COND TRUE y1 >= 0 && y2 >= 0 VAL [y1=1, y2=0] Loop: [L21] COND TRUE y1 != y2 [L22] COND TRUE y1 > y2 [L23] y1 = y1 - y2 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 21]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int y1, y2; [L18] y1 = __VERIFIER_nondet_int() [L19] y2 = __VERIFIER_nondet_int() [L20] COND TRUE y1 >= 0 && y2 >= 0 VAL [y1=1, y2=0] Loop: [L21] COND TRUE y1 != y2 [L22] COND TRUE y1 > y2 [L23] y1 = y1 - y2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-18 20:33:19,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51e3776a-53d5-4cee-a7a5-b831f099625e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)