./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a 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_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc --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 46affb860f1d0d7b6656a3074088d89f6e139022ec85b08907ba16419f351bb9 --- 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-5e519f3 [2022-11-02 20:44:53,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:44:53,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:44:53,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:44:53,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:44:53,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:44:53,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:44:53,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:44:53,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:44:53,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:44:53,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:44:53,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:44:53,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:44:53,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:44:53,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:44:53,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:44:53,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:44:53,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:44:53,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:44:53,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:44:53,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:44:53,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:44:53,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:44:53,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:44:53,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:44:53,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:44:53,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:44:53,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:44:53,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:44:53,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:44:53,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:44:53,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:44:53,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:44:53,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:44:53,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:44:53,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:44:53,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:44:53,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:44:53,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:44:53,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:44:53,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:44:53,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 20:44:53,467 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:44:53,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:44:53,468 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:44:53,468 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:44:53,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:44:53,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:44:53,470 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:44:53,470 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:44:53,470 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:44:53,471 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:44:53,472 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:44:53,472 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:44:53,472 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:44:53,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:44:53,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:44:53,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:44:53,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:44:53,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:44:53,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:44:53,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:44:53,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:44:53,474 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:44:53,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:44:53,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:44:53,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:44:53,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:44:53,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:44:53,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:44:53,477 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:44:53,477 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_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46affb860f1d0d7b6656a3074088d89f6e139022ec85b08907ba16419f351bb9 [2022-11-02 20:44:53,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:44:53,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:44:53,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:44:53,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:44:53,809 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:44:53,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2022-11-02 20:44:53,910 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/data/e400ed43b/ecceabfd571e40f0940d8d75fc1df551/FLAG3361b6a16 [2022-11-02 20:44:54,324 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:44:54,324 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2022-11-02 20:44:54,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/data/e400ed43b/ecceabfd571e40f0940d8d75fc1df551/FLAG3361b6a16 [2022-11-02 20:44:54,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/data/e400ed43b/ecceabfd571e40f0940d8d75fc1df551 [2022-11-02 20:44:54,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:44:54,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:44:54,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:54,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:44:54,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:44:54,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:54,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eff92df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54, skipping insertion in model container [2022-11-02 20:44:54,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:54,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:44:54,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:44:54,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:54,957 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:44:54,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:54,981 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:44:54,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54 WrapperNode [2022-11-02 20:44:54,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:54,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:54,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:44:54,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:44:54,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:54,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,009 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-11-02 20:44:55,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:55,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:44:55,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:44:55,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:44:55,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:44:55,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:44:55,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:44:55,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:44:55,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (1/1) ... [2022-11-02 20:44:55,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:44:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:55,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:44:55,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:44:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure binary_search [2022-11-02 20:44:55,110 INFO L138 BoogieDeclarations]: Found implementation of procedure binary_search [2022-11-02 20:44:55,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:44:55,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:44:55,172 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:44:55,174 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:44:55,295 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:44:55,302 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:44:55,303 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:44:55,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:55 BoogieIcfgContainer [2022-11-02 20:44:55,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:44:55,306 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:44:55,306 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:44:55,310 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:44:55,311 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:44:55,311 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:44:54" (1/3) ... [2022-11-02 20:44:55,312 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@798c0cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:44:55, skipping insertion in model container [2022-11-02 20:44:55,312 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:44:55,313 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:54" (2/3) ... [2022-11-02 20:44:55,313 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@798c0cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:44:55, skipping insertion in model container [2022-11-02 20:44:55,313 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:44:55,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:55" (3/3) ... [2022-11-02 20:44:55,315 INFO L332 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2022-11-02 20:44:55,368 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:44:55,369 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:44:55,369 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:44:55,369 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:44:55,369 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:44:55,369 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:44:55,369 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:44:55,370 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:44:55,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:44:55,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:44:55,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:44:55,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:44:55,403 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:55,403 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 20:44:55,403 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:44:55,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 20:44:55,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:44:55,406 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:44:55,406 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:44:55,406 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-02 20:44:55,406 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 20:44:55,413 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 11#L22true assume !!(-1073741823 <= main_~x~0#1 && main_~x~0#1 <= 1073741823); 14#L23true assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823); 17#L24true call main_#t~ret5#1 := binary_search(main_~x~0#1, main_~y~0#1);< 15#binary_searchENTRYtrue [2022-11-02 20:44:55,413 INFO L750 eck$LassoCheckResult]: Loop: 15#binary_searchENTRYtrue ~i := #in~i;~j := #in~j; 9#L10true assume !(~i >= ~j);~mid~0 := (if ~i + ~j < 0 && 0 != (~i + ~j) % 2 then 1 + (~i + ~j) / 2 else (~i + ~j) / 2); 16#L12true assume 0 != #t~nondet0;havoc #t~nondet0; 13#L13true call #t~ret1 := binary_search(~i, ~mid~0);< 15#binary_searchENTRYtrue [2022-11-02 20:44:55,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:55,418 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2022-11-02 20:44:55,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:55,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090487335] [2022-11-02 20:44:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:55,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:55,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:55,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash 927614, now seen corresponding path program 1 times [2022-11-02 20:44:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:55,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175274019] [2022-11-02 20:44:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:55,558 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:55,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:55,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash 324438969, now seen corresponding path program 1 times [2022-11-02 20:44:55,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:55,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310459331] [2022-11-02 20:44:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:55,591 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:55,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:44:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:56,205 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:44:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:44:56,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:44:56 BoogieIcfgContainer [2022-11-02 20:44:56,238 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:44:56,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:44:56,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:44:56,239 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:44:56,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:55" (3/4) ... [2022-11-02 20:44:56,242 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-02 20:44:56,276 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:44:56,277 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:44:56,278 INFO L158 Benchmark]: Toolchain (without parser) took 1552.79ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 70.9MB in the beginning and 92.4MB in the end (delta: -21.5MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2022-11-02 20:44:56,279 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:44:56,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.79ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 80.2MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:44:56,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.42ms. Allocated memory is still 104.9MB. Free memory was 80.2MB in the beginning and 78.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:44:56,281 INFO L158 Benchmark]: Boogie Preprocessor took 15.62ms. Allocated memory is still 104.9MB. Free memory was 78.8MB in the beginning and 78.0MB in the end (delta: 807.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:44:56,281 INFO L158 Benchmark]: RCFGBuilder took 278.52ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 68.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:44:56,282 INFO L158 Benchmark]: BuchiAutomizer took 932.93ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 68.9MB in the beginning and 93.8MB in the end (delta: -24.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-02 20:44:56,283 INFO L158 Benchmark]: Witness Printer took 37.66ms. Allocated memory is still 132.1MB. Free memory was 93.8MB in the beginning and 92.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:44:56,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 57.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.79ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 80.2MB in the end (delta: -9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.42ms. Allocated memory is still 104.9MB. Free memory was 80.2MB in the beginning and 78.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.62ms. Allocated memory is still 104.9MB. Free memory was 78.8MB in the beginning and 78.0MB in the end (delta: 807.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 278.52ms. Allocated memory is still 104.9MB. Free memory was 78.0MB in the beginning and 68.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 932.93ms. Allocated memory was 104.9MB in the beginning and 132.1MB in the end (delta: 27.3MB). Free memory was 68.9MB in the beginning and 93.8MB in the end (delta: -24.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Witness Printer took 37.66ms. Allocated memory is still 132.1MB. Free memory was 93.8MB in the beginning and 92.4MB in the end (delta: 1.4MB). 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 0.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. 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: 8]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(-1073741823<=x && x<=1073741823)) VAL [x=-1] [L23] COND FALSE !(!(-1073741823<=y && y<=1073741823)) VAL [x=-1, y=0] [L24] CALL binary_search(x, y) VAL [\old(i)=-1, \old(j)=0] Loop: [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() [L13] CALL binary_search(i,mid) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 8]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(-1073741823<=x && x<=1073741823)) VAL [x=-1] [L23] COND FALSE !(!(-1073741823<=y && y<=1073741823)) VAL [x=-1, y=0] [L24] CALL binary_search(x, y) VAL [\old(i)=-1, \old(j)=0] Loop: [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() [L13] CALL binary_search(i,mid) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-02 20:44:56,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a8424c-472b-4e1a-8fc3-62140e9d5655/bin/uautomizer-Dbtcem3rbc/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)