./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 e7bb482b 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_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP --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 --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:58:14,544 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:58:14,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 22:58:14,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:58:14,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:58:14,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:58:14,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:58:14,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:58:14,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:58:14,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:58:14,680 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:58:14,681 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:58:14,681 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:58:14,683 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:58:14,684 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:58:14,684 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:58:14,684 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:58:14,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:58:14,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:58:14,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:58:14,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:58:14,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:58:14,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:58:14,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:58:14,689 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:58:14,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:58:14,690 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:58:14,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:58:14,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:58:14,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:58:14,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:58:14,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:58:14,694 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:58:14,694 INFO L153 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_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46affb860f1d0d7b6656a3074088d89f6e139022ec85b08907ba16419f351bb9 [2023-11-06 22:58:14,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:58:15,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:58:15,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:58:15,012 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:58:15,013 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:58:15,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2023-11-06 22:58:18,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:58:18,447 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:58:18,448 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2023-11-06 22:58:18,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/data/e90945a2e/46f01da43aaf48f1ac00b73c45c8d222/FLAG4e50ff41e [2023-11-06 22:58:18,479 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/data/e90945a2e/46f01da43aaf48f1ac00b73c45c8d222 [2023-11-06 22:58:18,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:58:18,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:58:18,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:18,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:58:18,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:58:18,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482b391c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18, skipping insertion in model container [2023-11-06 22:58:18,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:58:18,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:18,714 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:58:18,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:58:18,743 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:58:18,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18 WrapperNode [2023-11-06 22:58:18,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:58:18,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:18,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:58:18,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:58:18,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,773 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2023-11-06 22:58:18,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:58:18,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:58:18,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:58:18,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:58:18,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:58:18,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:58:18,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:58:18,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:58:18,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (1/1) ... [2023-11-06 22:58:18,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:58:18,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:58:18,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:58:18,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:58:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure binary_search [2023-11-06 22:58:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure binary_search [2023-11-06 22:58:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:58:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:58:18,937 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:58:18,939 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:58:19,050 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:58:19,057 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:58:19,057 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:58:19,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:19 BoogieIcfgContainer [2023-11-06 22:58:19,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:58:19,061 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:58:19,061 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:58:19,066 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:58:19,066 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:58:19,067 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:58:18" (1/3) ... [2023-11-06 22:58:19,068 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50e3f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:58:19, skipping insertion in model container [2023-11-06 22:58:19,068 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:58:19,068 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:18" (2/3) ... [2023-11-06 22:58:19,069 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50e3f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:58:19, skipping insertion in model container [2023-11-06 22:58:19,069 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:58:19,069 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:19" (3/3) ... [2023-11-06 22:58:19,071 INFO L332 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2023-11-06 22:58:19,139 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:58:19,139 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:58:19,139 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:58:19,139 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:58:19,139 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:58:19,140 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:58:19,140 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:58:19,140 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:58:19,145 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) [2023-11-06 22:58:19,170 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:58:19,170 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:58:19,171 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:58:19,178 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-06 22:58:19,179 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 22:58:19,179 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:58:19,179 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) [2023-11-06 22:58:19,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 22:58:19,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:58:19,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:58:19,187 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-06 22:58:19,187 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 22:58:19,198 INFO L748 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1;havoc main_#t~nondet3#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 11#L22true assume !!(-1073741823 <= main_~x~0#1 && main_~x~0#1 <= 1073741823); 15#L23true assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823); 17#L24true call main_#t~ret5#1 := binary_search(main_~x~0#1, main_~y~0#1);< 5#$Ultimate##0true [2023-11-06 22:58:19,199 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);havoc #t~nondet0; 16#L12true assume 0 != #t~nondet0;havoc #t~nondet0; 13#L13true call #t~ret1 := binary_search(~i, ~mid~0);< 5#$Ultimate##0true [2023-11-06 22:58:19,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2023-11-06 22:58:19,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:19,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160576096] [2023-11-06 22:58:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:19,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:19,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:58:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:19,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:58:19,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash 927614, now seen corresponding path program 1 times [2023-11-06 22:58:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:19,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663606660] [2023-11-06 22:58:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:19,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:19,436 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:58:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:19,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:58:19,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash 324438969, now seen corresponding path program 1 times [2023-11-06 22:58:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:19,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45990887] [2023-11-06 22:58:19,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:19,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:19,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:58:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:19,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:58:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:20,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:58:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:58:20,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:58:20 BoogieIcfgContainer [2023-11-06 22:58:20,180 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:58:20,182 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:58:20,182 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:58:20,182 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:58:20,183 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:19" (3/4) ... [2023-11-06 22:58:20,185 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 22:58:20,253 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:58:20,253 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:58:20,255 INFO L158 Benchmark]: Toolchain (without parser) took 1766.41ms. Allocated memory is still 153.1MB. Free memory was 114.5MB in the beginning and 90.2MB in the end (delta: 24.4MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2023-11-06 22:58:20,258 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:58:20,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.92ms. Allocated memory is still 153.1MB. Free memory was 114.5MB in the beginning and 104.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:58:20,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.02ms. Allocated memory is still 153.1MB. Free memory was 104.9MB in the beginning and 103.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:58:20,264 INFO L158 Benchmark]: Boogie Preprocessor took 18.93ms. Allocated memory is still 153.1MB. Free memory was 103.7MB in the beginning and 102.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:58:20,265 INFO L158 Benchmark]: RCFGBuilder took 266.06ms. Allocated memory is still 153.1MB. Free memory was 102.4MB in the beginning and 93.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:58:20,266 INFO L158 Benchmark]: BuchiAutomizer took 1119.70ms. Allocated memory is still 153.1MB. Free memory was 93.2MB in the beginning and 92.3MB in the end (delta: 933.7kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2023-11-06 22:58:20,267 INFO L158 Benchmark]: Witness Printer took 71.34ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:58:20,270 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory is still 58.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.92ms. Allocated memory is still 153.1MB. Free memory was 114.5MB in the beginning and 104.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.02ms. Allocated memory is still 153.1MB. Free memory was 104.9MB in the beginning and 103.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.93ms. Allocated memory is still 153.1MB. Free memory was 103.7MB in the beginning and 102.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 266.06ms. Allocated memory is still 153.1MB. Free memory was 102.4MB in the beginning and 93.2MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1119.70ms. Allocated memory is still 153.1MB. Free memory was 93.2MB in the beginning and 92.3MB in the end (delta: 933.7kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Witness Printer took 71.34ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). 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 1.0s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. 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! [2023-11-06 22:58:20,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94b286cf-34e7-4965-926b-aedcb9a339d9/bin/uautomizer-verify-WvqO1wxjHP/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)