./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 2329fc70 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_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8 --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-2329fc7 [2022-12-13 15:18:26,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:18:26,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:18:26,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:18:26,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:18:26,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:18:26,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:18:26,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:18:26,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:18:26,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:18:26,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:18:26,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:18:26,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:18:26,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:18:26,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:18:26,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:18:26,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:18:26,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:18:26,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:18:26,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:18:26,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:18:26,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:18:26,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:18:26,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:18:26,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:18:26,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:18:26,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:18:26,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:18:26,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:18:26,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:18:26,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:18:26,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:18:26,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:18:26,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:18:26,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:18:26,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:18:26,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:18:26,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:18:26,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:18:26,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:18:26,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:18:26,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 15:18:26,512 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:18:26,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:18:26,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:18:26,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:18:26,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:18:26,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:18:26,514 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:18:26,514 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 15:18:26,514 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 15:18:26,514 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 15:18:26,514 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 15:18:26,514 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 15:18:26,514 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 15:18:26,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 15:18:26,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:18:26,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 15:18:26,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:18:26,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:18:26,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:18:26,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:18:26,517 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 15:18:26,517 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_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46affb860f1d0d7b6656a3074088d89f6e139022ec85b08907ba16419f351bb9 [2022-12-13 15:18:26,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:18:26,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:18:26,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:18:26,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:18:26,717 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:18:26,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2022-12-13 15:18:29,321 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:18:29,476 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:18:29,476 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2022-12-13 15:18:29,481 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/data/4961ef8c2/2c1b6f507f3549e6bd9578a8f9f3d858/FLAG0d142366e [2022-12-13 15:18:29,496 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/data/4961ef8c2/2c1b6f507f3549e6bd9578a8f9f3d858 [2022-12-13 15:18:29,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:18:29,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:18:29,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:18:29,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:18:29,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:18:29,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@650e99db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29, skipping insertion in model container [2022-12-13 15:18:29,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:18:29,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:18:29,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:18:29,621 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:18:29,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:18:29,640 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:18:29,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29 WrapperNode [2022-12-13 15:18:29,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:18:29,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:18:29,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:18:29,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:18:29,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,662 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-12-13 15:18:29,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:18:29,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:18:29,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:18:29,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:18:29,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,674 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:18:29,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:18:29,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:18:29,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:18:29,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (1/1) ... [2022-12-13 15:18:29,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:18:29,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:18:29,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:18:29,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 15:18:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure binary_search [2022-12-13 15:18:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure binary_search [2022-12-13 15:18:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:18:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:18:29,784 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:18:29,786 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:18:29,860 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:18:29,865 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:18:29,865 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:18:29,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:18:29 BoogieIcfgContainer [2022-12-13 15:18:29,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:18:29,868 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 15:18:29,868 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 15:18:29,871 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 15:18:29,871 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:18:29,871 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 03:18:29" (1/3) ... [2022-12-13 15:18:29,872 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eedcb18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 03:18:29, skipping insertion in model container [2022-12-13 15:18:29,872 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:18:29,872 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:29" (2/3) ... [2022-12-13 15:18:29,872 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6eedcb18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 03:18:29, skipping insertion in model container [2022-12-13 15:18:29,873 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:18:29,873 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:18:29" (3/3) ... [2022-12-13 15:18:29,874 INFO L332 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2022-12-13 15:18:29,914 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 15:18:29,914 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 15:18:29,915 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 15:18:29,915 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 15:18:29,915 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 15:18:29,915 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 15:18:29,915 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 15:18:29,915 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 15:18:29,918 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) [2022-12-13 15:18:29,933 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 15:18:29,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:18:29,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:18:29,938 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 15:18:29,938 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 15:18:29,938 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 15:18:29,939 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) [2022-12-13 15:18:29,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 15:18:29,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:18:29,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:18:29,941 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 15:18:29,941 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 15:18:29,946 INFO L748 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 11#L22true assume !!(-1073741823 <= main_~x~0#1 && main_~x~0#1 <= 1073741823); 15#L23true assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823); 17#L24true call main_#t~ret5#1 := binary_search(main_~x~0#1, main_~y~0#1);< 5#$Ultimate##0true [2022-12-13 15:18:29,947 INFO L750 eck$LassoCheckResult]: Loop: 5#$Ultimate##0true ~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);< 5#$Ultimate##0true [2022-12-13 15:18:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2022-12-13 15:18:29,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:29,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225685742] [2022-12-13 15:18:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:18:30,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:18:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:18:30,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:18:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash 927614, now seen corresponding path program 1 times [2022-12-13 15:18:30,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:30,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454521524] [2022-12-13 15:18:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:30,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:18:30,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:18:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:18:30,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:18:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:30,060 INFO L85 PathProgramCache]: Analyzing trace with hash 324438969, now seen corresponding path program 1 times [2022-12-13 15:18:30,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:30,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776469571] [2022-12-13 15:18:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:18:30,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:18:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:18:30,081 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:18:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:18:30,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:18:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:18:30,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 03:18:30 BoogieIcfgContainer [2022-12-13 15:18:30,459 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 15:18:30,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:18:30,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:18:30,459 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:18:30,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:18:29" (3/4) ... [2022-12-13 15:18:30,462 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-12-13 15:18:30,485 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:18:30,485 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:18:30,487 INFO L158 Benchmark]: Toolchain (without parser) took 986.91ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 107.8MB in the beginning and 129.6MB in the end (delta: -21.7MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-12-13 15:18:30,487 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 140.5MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:18:30,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 140.78ms. Allocated memory is still 140.5MB. Free memory was 107.7MB in the beginning and 98.3MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:18:30,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.62ms. Allocated memory is still 140.5MB. Free memory was 98.3MB in the beginning and 96.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:18:30,489 INFO L158 Benchmark]: Boogie Preprocessor took 12.08ms. Allocated memory is still 140.5MB. Free memory was 96.7MB in the beginning and 95.8MB in the end (delta: 939.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:18:30,490 INFO L158 Benchmark]: RCFGBuilder took 191.31ms. Allocated memory is still 140.5MB. Free memory was 95.8MB in the beginning and 86.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 15:18:30,490 INFO L158 Benchmark]: BuchiAutomizer took 591.21ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 86.7MB in the beginning and 132.0MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:18:30,491 INFO L158 Benchmark]: Witness Printer took 25.79ms. Allocated memory is still 174.1MB. Free memory was 132.0MB in the beginning and 129.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 15:18:30,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 140.5MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 140.78ms. Allocated memory is still 140.5MB. Free memory was 107.7MB in the beginning and 98.3MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.62ms. Allocated memory is still 140.5MB. Free memory was 98.3MB in the beginning and 96.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.08ms. Allocated memory is still 140.5MB. Free memory was 96.7MB in the beginning and 95.8MB in the end (delta: 939.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 191.31ms. Allocated memory is still 140.5MB. Free memory was 95.8MB in the beginning and 86.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 591.21ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 86.7MB in the beginning and 132.0MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.79ms. Allocated memory is still 174.1MB. Free memory was 132.0MB in the beginning and 129.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. 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: 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! [2022-12-13 15:18:30,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7697422-3b49-45f4-94b4-ca7bed8b3ec6/bin/uautomizer-uyxdKDjOR8/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)