./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/not-02-false.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 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_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/not-02-false.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx --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 1cb1212705dcb2359e149f714cdee98eb86abe4233b8489d951797aa1809a1f3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:28:43,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:28:43,554 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-21 22:28:43,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:28:43,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:28:43,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:28:43,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:28:43,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:28:43,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:28:43,594 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:28:43,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:28:43,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:28:43,596 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:28:43,596 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 22:28:43,597 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 22:28:43,598 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 22:28:43,599 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 22:28:43,599 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 22:28:43,600 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 22:28:43,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:28:43,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 22:28:43,602 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:28:43,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:28:43,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 22:28:43,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 22:28:43,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 22:28:43,604 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:28:43,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:28:43,605 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 22:28:43,606 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:28:43,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:28:43,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:28:43,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:28:43,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:28:43,608 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 22:28:43,608 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_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cb1212705dcb2359e149f714cdee98eb86abe4233b8489d951797aa1809a1f3 [2023-11-21 22:28:43,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:28:43,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:28:43,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:28:43,973 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:28:43,973 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:28:43,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-bwb/not-02-false.c [2023-11-21 22:28:47,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:28:47,318 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:28:47,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/sv-benchmarks/c/termination-bwb/not-02-false.c [2023-11-21 22:28:47,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/data/8e5694eed/b762b34ffda647f08895e2eef42b34c5/FLAGb25a998f7 [2023-11-21 22:28:47,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/data/8e5694eed/b762b34ffda647f08895e2eef42b34c5 [2023-11-21 22:28:47,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:28:47,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:28:47,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:28:47,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:28:47,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:28:47,376 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,377 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0229f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47, skipping insertion in model container [2023-11-21 22:28:47,377 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,400 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:28:47,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:28:47,591 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:28:47,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:28:47,618 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:28:47,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47 WrapperNode [2023-11-21 22:28:47,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:28:47,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:28:47,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:28:47,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:28:47,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,655 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-11-21 22:28:47,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:28:47,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:28:47,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:28:47,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:28:47,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,671 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,678 INFO L187 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-21 22:28:47,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:28:47,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:28:47,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:28:47,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:28:47,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (1/1) ... [2023-11-21 22:28:47,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:28:47,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:28:47,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:28:47,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 22:28:47,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:28:47,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:28:47,851 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:28:47,854 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:28:47,956 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:28:47,968 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:28:47,968 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:28:47,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:47 BoogieIcfgContainer [2023-11-21 22:28:47,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:28:47,973 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 22:28:47,973 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 22:28:47,978 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 22:28:47,979 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:28:47,979 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 10:28:47" (1/3) ... [2023-11-21 22:28:47,980 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c7d4fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:28:47, skipping insertion in model container [2023-11-21 22:28:47,981 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:28:47,981 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:28:47" (2/3) ... [2023-11-21 22:28:47,983 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c7d4fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:28:47, skipping insertion in model container [2023-11-21 22:28:47,983 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:28:47,983 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:47" (3/3) ... [2023-11-21 22:28:47,985 INFO L332 chiAutomizerObserver]: Analyzing ICFG not-02-false.c [2023-11-21 22:28:48,064 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 22:28:48,066 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 22:28:48,067 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 22:28:48,067 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 22:28:48,067 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 22:28:48,067 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 22:28:48,068 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 22:28:48,068 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 22:28:48,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-11-21 22:28:48,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-21 22:28:48,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:28:48,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:28:48,100 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 22:28:48,101 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-21 22:28:48,102 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 22:28:48,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2023-11-21 22:28:48,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-21 22:28:48,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:28:48,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:28:48,105 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 22:28:48,105 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-21 22:28:48,114 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~a~0#1 := 1; 3#L17-2true [2023-11-21 22:28:48,115 INFO L750 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~x~0#1 < 0);main_~y~0#1 := -1 - main_~a~0#1;main_~x~0#1 := main_~y~0#1; 3#L17-2true [2023-11-21 22:28:48,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-21 22:28:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:48,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135954980] [2023-11-21 22:28:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:48,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:48,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:48,270 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-11-21 22:28:48,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:48,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267599810] [2023-11-21 22:28:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:48,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:48,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:28:48,326 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-21 22:28:48,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:28:48,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453051085] [2023-11-21 22:28:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:28:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:28:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:28:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:28:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:28:48,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 10:28:48 BoogieIcfgContainer [2023-11-21 22:28:48,562 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 22:28:48,562 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:28:48,563 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:28:48,563 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:28:48,563 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:28:47" (3/4) ... [2023-11-21 22:28:48,565 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 22:28:48,602 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:28:48,603 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:28:48,604 INFO L158 Benchmark]: Toolchain (without parser) took 1242.82ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 136.0MB in the end (delta: -9.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:48,605 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:48,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.34ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 117.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:28:48,606 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.37ms. Allocated memory is still 167.8MB. Free memory was 117.2MB in the beginning and 115.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:28:48,607 INFO L158 Benchmark]: Boogie Preprocessor took 31.77ms. Allocated memory is still 167.8MB. Free memory was 115.8MB in the beginning and 114.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:28:48,608 INFO L158 Benchmark]: RCFGBuilder took 281.69ms. Allocated memory is still 167.8MB. Free memory was 114.6MB in the beginning and 106.6MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:28:48,608 INFO L158 Benchmark]: BuchiAutomizer took 588.87ms. Allocated memory is still 167.8MB. Free memory was 106.6MB in the beginning and 137.4MB in the end (delta: -30.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:28:48,609 INFO L158 Benchmark]: Witness Printer took 40.49ms. Allocated memory is still 167.8MB. Free memory was 137.4MB in the beginning and 136.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:28:48,612 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.34ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 117.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.37ms. Allocated memory is still 167.8MB. Free memory was 117.2MB in the beginning and 115.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.77ms. Allocated memory is still 167.8MB. Free memory was 115.8MB in the beginning and 114.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.69ms. Allocated memory is still 167.8MB. Free memory was 114.6MB in the beginning and 106.6MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 588.87ms. Allocated memory is still 167.8MB. Free memory was 106.6MB in the beginning and 137.4MB in the end (delta: -30.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 40.49ms. Allocated memory is still 167.8MB. Free memory was 137.4MB in the beginning and 136.0MB 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: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 1 VAL [a=1] Loop: [L17] COND TRUE x<0 [L18] y = ~a [L19] x = y End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 1 VAL [a=1] Loop: [L17] COND TRUE x<0 [L18] y = ~a [L19] x = y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:28:48,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3ce4ac6-632c-4668-92f6-841defca8fc5/bin/uautomizer-verify-bycVGegfSx/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)