./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/bh2017-ex3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/bh2017-ex3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya --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 32bit --witnessprinter.graph.data.programhash 67c3f42f5641e6993fb8445c2fa4fe121d859872ed17b178229098422831f110 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:07:14,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:07:14,826 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 07:07:14,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:07:14,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:07:14,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:07:14,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:07:14,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:07:14,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:07:14,860 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:07:14,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:07:14,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:07:14,861 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:07:14,862 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 07:07:14,862 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 07:07:14,863 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 07:07:14,863 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 07:07:14,864 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 07:07:14,864 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 07:07:14,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:07:14,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 07:07:14,866 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:07:14,866 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:07:14,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:07:14,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:07:14,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 07:07:14,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 07:07:14,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 07:07:14,869 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 07:07:14,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:07:14,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:07:14,870 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 07:07:14,870 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:07:14,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:07:14,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:07:14,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:07:14,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:07:14,873 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 07:07:14,873 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_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67c3f42f5641e6993fb8445c2fa4fe121d859872ed17b178229098422831f110 [2023-11-29 07:07:15,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:07:15,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:07:15,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:07:15,113 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:07:15,113 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:07:15,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loop-lit/bh2017-ex3.i [2023-11-29 07:07:17,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:07:18,047 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:07:18,048 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/sv-benchmarks/c/loop-lit/bh2017-ex3.i [2023-11-29 07:07:18,055 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/data/6956d8634/49ee276e81ea4bf1bf12711c60ccd673/FLAGbfda57844 [2023-11-29 07:07:18,069 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/data/6956d8634/49ee276e81ea4bf1bf12711c60ccd673 [2023-11-29 07:07:18,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:07:18,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:07:18,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:07:18,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:07:18,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:07:18,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795495e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18, skipping insertion in model container [2023-11-29 07:07:18,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,102 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:07:18,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:07:18,260 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:07:18,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:07:18,286 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:07:18,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18 WrapperNode [2023-11-29 07:07:18,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:07:18,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:07:18,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:07:18,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:07:18,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,322 INFO L138 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 74 [2023-11-29 07:07:18,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:07:18,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:07:18,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:07:18,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:07:18,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,336 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,347 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 07:07:18,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:07:18,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:07:18,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:07:18,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:07:18,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (1/1) ... [2023-11-29 07:07:18,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:07:18,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:07:18,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:07:18,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 07:07:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:07:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:07:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:07:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:07:18,481 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:07:18,483 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:07:18,608 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:07:18,617 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:07:18,618 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:07:18,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:07:18 BoogieIcfgContainer [2023-11-29 07:07:18,619 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:07:18,620 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 07:07:18,621 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 07:07:18,625 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 07:07:18,625 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:07:18,626 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:07:18" (1/3) ... [2023-11-29 07:07:18,626 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c741d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:07:18, skipping insertion in model container [2023-11-29 07:07:18,627 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:07:18,627 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:07:18" (2/3) ... [2023-11-29 07:07:18,627 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c741d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:07:18, skipping insertion in model container [2023-11-29 07:07:18,627 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:07:18,627 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:07:18" (3/3) ... [2023-11-29 07:07:18,629 INFO L332 chiAutomizerObserver]: Analyzing ICFG bh2017-ex3.i [2023-11-29 07:07:18,684 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 07:07:18,685 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 07:07:18,685 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 07:07:18,685 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 07:07:18,685 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 07:07:18,685 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 07:07:18,685 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 07:07:18,686 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 07:07:18,689 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:07:18,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-29 07:07:18,705 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:07:18,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:07:18,710 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 07:07:18,710 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:07:18,710 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 07:07:18,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:07:18,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-29 07:07:18,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:07:18,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:07:18,714 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 07:07:18,714 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:07:18,720 INFO L748 eck$LassoCheckResult]: Stem: 31#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet4#1, main_#t~post5#1, main_~m~0#1, main_~n~0#1;main_~m~0#1 := 0;main_~n~0#1 := 0; 22#L33-1true [2023-11-29 07:07:18,721 INFO L750 eck$LassoCheckResult]: Loop: 22#L33-1true assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~m~0#1 <= 60 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 12#L13true assume !(0 == __VERIFIER_assert_~cond#1); 5#L13-3true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~n~0#1 <= 60 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 32#L13-4true assume !(0 == __VERIFIER_assert_~cond#1); 9#L13-7true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;havoc main_#t~nondet1#1; 29#L21true assume 0 != main_#t~nondet1#1 % 256;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1; 11#L22true assume !(0 != main_#t~nondet2#1 % 256);havoc main_#t~nondet2#1; 22#L33-1true [2023-11-29 07:07:18,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:07:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 07:07:18,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:07:18,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850135388] [2023-11-29 07:07:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:18,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:07:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:07:18,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:07:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:07:18,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:07:18,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:07:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash -637622967, now seen corresponding path program 1 times [2023-11-29 07:07:18,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:07:18,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024209017] [2023-11-29 07:07:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:18,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:07:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:07:18,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:07:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:07:18,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:07:18,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:07:18,866 INFO L85 PathProgramCache]: Analyzing trace with hash 908673863, now seen corresponding path program 1 times [2023-11-29 07:07:18,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:07:18,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881623565] [2023-11-29 07:07:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:07:18,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:07:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:07:18,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:07:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:07:18,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:07:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:07:19,143 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:07:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:07:19,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:07:19 BoogieIcfgContainer [2023-11-29 07:07:19,169 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 07:07:19,169 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 07:07:19,169 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 07:07:19,169 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 07:07:19,170 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:07:18" (3/4) ... [2023-11-29 07:07:19,171 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 07:07:19,206 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 07:07:19,207 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 07:07:19,208 INFO L158 Benchmark]: Toolchain (without parser) took 1134.75ms. Allocated memory is still 144.7MB. Free memory was 107.7MB in the beginning and 100.3MB in the end (delta: 7.4MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2023-11-29 07:07:19,209 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:07:19,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.25ms. Allocated memory is still 144.7MB. Free memory was 107.3MB in the beginning and 97.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 07:07:19,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.34ms. Allocated memory is still 144.7MB. Free memory was 97.2MB in the beginning and 95.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:07:19,210 INFO L158 Benchmark]: Boogie Preprocessor took 36.30ms. Allocated memory is still 144.7MB. Free memory was 95.6MB in the beginning and 93.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:07:19,211 INFO L158 Benchmark]: RCFGBuilder took 259.51ms. Allocated memory is still 144.7MB. Free memory was 93.9MB in the beginning and 83.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 07:07:19,211 INFO L158 Benchmark]: BuchiAutomizer took 548.20ms. Allocated memory is still 144.7MB. Free memory was 83.1MB in the beginning and 101.7MB in the end (delta: -18.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:07:19,212 INFO L158 Benchmark]: Witness Printer took 37.43ms. Allocated memory is still 144.7MB. Free memory was 101.7MB in the beginning and 100.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:07:19,215 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.25ms. Allocated memory is still 144.7MB. Free memory was 107.3MB in the beginning and 97.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.34ms. Allocated memory is still 144.7MB. Free memory was 97.2MB in the beginning and 95.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.30ms. Allocated memory is still 144.7MB. Free memory was 95.6MB in the beginning and 93.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 259.51ms. Allocated memory is still 144.7MB. Free memory was 93.9MB in the beginning and 83.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 548.20ms. Allocated memory is still 144.7MB. Free memory was 83.1MB in the beginning and 101.7MB in the end (delta: -18.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.43ms. Allocated memory is still 144.7MB. Free memory was 101.7MB in the beginning and 100.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L16] int m = 0; [L17] int n = 0; VAL [m=0, n=0] Loop: [L18] COND TRUE 1 [L19] CALL __VERIFIER_assert(m <= 60) [L13] COND FALSE !(!(cond)) [L19] RET __VERIFIER_assert(m <= 60) [L20] CALL __VERIFIER_assert(n <= 60) [L13] COND FALSE !(!(cond)) [L20] RET __VERIFIER_assert(n <= 60) [L21] COND TRUE __VERIFIER_nondet_bool() [L22] COND FALSE !(__VERIFIER_nondet_bool()) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L16] int m = 0; [L17] int n = 0; VAL [m=0, n=0] Loop: [L18] COND TRUE 1 [L19] CALL __VERIFIER_assert(m <= 60) [L13] COND FALSE !(!(cond)) [L19] RET __VERIFIER_assert(m <= 60) [L20] CALL __VERIFIER_assert(n <= 60) [L13] COND FALSE !(!(cond)) [L20] RET __VERIFIER_assert(n <= 60) [L21] COND TRUE __VERIFIER_nondet_bool() [L22] COND FALSE !(__VERIFIER_nondet_bool()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 07:07:19,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094198ee-28f3-44f0-a426-46f00112e3a7/bin/uautomizer-verify-BQ2R08f2Ya/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)