./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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-cf1a783 [2023-11-12 02:24:11,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:11,621 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-12 02:24:11,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:11,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:11,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:11,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:11,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:11,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:11,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:11,655 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:11,656 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-12 02:24:11,656 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-12 02:24:11,657 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-12 02:24:11,657 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-12 02:24:11,658 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-12 02:24:11,659 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-12 02:24:11,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:11,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-12 02:24:11,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:11,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:11,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-12 02:24:11,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-12 02:24:11,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-12 02:24:11,666 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:11,666 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:11,667 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-12 02:24:11,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:11,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:11,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:11,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:11,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:11,670 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-12 02:24:11,670 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_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46affb860f1d0d7b6656a3074088d89f6e139022ec85b08907ba16419f351bb9 [2023-11-12 02:24:11,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:12,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:12,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:12,022 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:12,023 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:12,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2023-11-12 02:24:15,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:15,469 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:15,470 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2023-11-12 02:24:15,478 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/data/8d1cc3af4/c27bcc1567dd4a4a8e96e905844cb1f7/FLAG8fa10a5b7 [2023-11-12 02:24:15,501 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/data/8d1cc3af4/c27bcc1567dd4a4a8e96e905844cb1f7 [2023-11-12 02:24:15,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:15,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:15,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:15,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:15,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:15,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5685548f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15, skipping insertion in model container [2023-11-12 02:24:15,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:15,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:15,736 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:15,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:15,759 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:15,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15 WrapperNode [2023-11-12 02:24:15,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:15,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:15,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:15,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:15,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,792 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2023-11-12 02:24:15,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:15,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:15,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:15,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:15,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:15,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:15,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:15,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:15,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (1/1) ... [2023-11-12 02:24:15,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:24:15,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:15,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:15,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure binary_search [2023-11-12 02:24:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure binary_search [2023-11-12 02:24:15,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:15,973 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:15,976 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:16,083 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:16,090 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:16,090 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:24:16,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:16 BoogieIcfgContainer [2023-11-12 02:24:16,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:16,094 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-12 02:24:16,094 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-12 02:24:16,099 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-12 02:24:16,100 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:24:16,100 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 02:24:15" (1/3) ... [2023-11-12 02:24:16,101 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26fda12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:24:16, skipping insertion in model container [2023-11-12 02:24:16,101 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:24:16,102 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:15" (2/3) ... [2023-11-12 02:24:16,102 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26fda12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:24:16, skipping insertion in model container [2023-11-12 02:24:16,103 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:24:16,103 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:16" (3/3) ... [2023-11-12 02:24:16,104 INFO L332 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2023-11-12 02:24:16,171 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-12 02:24:16,171 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-12 02:24:16,171 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-12 02:24:16,172 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-12 02:24:16,172 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-12 02:24:16,172 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-12 02:24:16,172 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-12 02:24:16,172 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-12 02:24:16,177 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) [2023-11-12 02:24:16,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-12 02:24:16,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:24:16,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:24:16,201 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-12 02:24:16,201 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-12 02:24:16,201 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-12 02:24:16,202 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) [2023-11-12 02:24:16,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-12 02:24:16,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:24:16,204 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:24:16,205 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-12 02:24:16,205 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-12 02:24:16,212 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 [2023-11-12 02:24:16,212 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 [2023-11-12 02:24:16,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2023-11-12 02:24:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:16,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351452998] [2023-11-12 02:24:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:16,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:16,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:24:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:16,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:24:16,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 927614, now seen corresponding path program 1 times [2023-11-12 02:24:16,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:16,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810061513] [2023-11-12 02:24:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:16,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:16,422 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:24:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:16,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:24:16,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash 324438969, now seen corresponding path program 1 times [2023-11-12 02:24:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:16,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726508619] [2023-11-12 02:24:16,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:16,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:16,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:24:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:16,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:24:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:17,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:24:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:24:17,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 02:24:17 BoogieIcfgContainer [2023-11-12 02:24:17,216 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-12 02:24:17,217 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:24:17,217 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:24:17,217 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:24:17,218 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:16" (3/4) ... [2023-11-12 02:24:17,219 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-12 02:24:17,256 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:24:17,257 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:24:17,258 INFO L158 Benchmark]: Toolchain (without parser) took 1743.07ms. Allocated memory is still 138.4MB. Free memory was 96.2MB in the beginning and 66.0MB in the end (delta: 30.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-12 02:24:17,259 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 100.7MB. Free memory was 72.7MB in the beginning and 72.6MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:24:17,260 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.58ms. Allocated memory is still 138.4MB. Free memory was 95.8MB in the beginning and 86.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:24:17,261 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.41ms. Allocated memory is still 138.4MB. Free memory was 86.2MB in the beginning and 84.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:24:17,261 INFO L158 Benchmark]: Boogie Preprocessor took 25.91ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 84.0MB in the end (delta: 975.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:24:17,262 INFO L158 Benchmark]: RCFGBuilder took 272.57ms. Allocated memory is still 138.4MB. Free memory was 84.0MB in the beginning and 75.3MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:24:17,263 INFO L158 Benchmark]: BuchiAutomizer took 1122.05ms. Allocated memory is still 138.4MB. Free memory was 74.9MB in the beginning and 68.1MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:24:17,264 INFO L158 Benchmark]: Witness Printer took 40.08ms. Allocated memory is still 138.4MB. Free memory was 68.1MB in the beginning and 66.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:24:17,268 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 100.7MB. Free memory was 72.7MB in the beginning and 72.6MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.58ms. Allocated memory is still 138.4MB. Free memory was 95.8MB in the beginning and 86.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.41ms. Allocated memory is still 138.4MB. Free memory was 86.2MB in the beginning and 84.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.91ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 84.0MB in the end (delta: 975.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 272.57ms. Allocated memory is still 138.4MB. Free memory was 84.0MB in the beginning and 75.3MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1122.05ms. Allocated memory is still 138.4MB. Free memory was 74.9MB in the beginning and 68.1MB in the end (delta: 6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 40.08ms. Allocated memory is still 138.4MB. Free memory was 68.1MB in the beginning and 66.0MB 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! [2023-11-12 02:24:17,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85b71889-a18b-4d25-951a-6280fc06d263/bin/uautomizer-verify-uTZkv6EMXl/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)