./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/and-03-false.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30e01a73 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_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/and-03-false.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ --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 cfd67d5631b4948a1522f37c4b686fa068a561ee1d767737058a32ed6cf067a0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:42:50,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:42:50,170 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-23 21:42:50,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:42:50,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:42:50,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:42:50,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:42:50,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:42:50,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:42:50,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:42:50,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:42:50,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:42:50,216 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:42:50,216 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-23 21:42:50,217 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-23 21:42:50,217 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-23 21:42:50,218 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-23 21:42:50,218 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-23 21:42:50,219 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-23 21:42:50,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:42:50,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-23 21:42:50,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:42:50,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:42:50,221 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-23 21:42:50,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-23 21:42:50,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-23 21:42:50,222 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:42:50,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:42:50,223 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-23 21:42:50,224 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:42:50,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:42:50,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:42:50,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:42:50,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:42:50,226 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-23 21:42:50,226 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_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfd67d5631b4948a1522f37c4b686fa068a561ee1d767737058a32ed6cf067a0 [2023-11-23 21:42:50,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:42:50,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:42:50,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:42:50,596 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:42:50,597 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:42:50,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/termination-bwb/and-03-false.c [2023-11-23 21:42:53,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:42:53,982 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:42:53,982 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/sv-benchmarks/c/termination-bwb/and-03-false.c [2023-11-23 21:42:53,990 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/data/eb79ce73a/442cf68942634e7bb72de3737bea1b86/FLAG32d6945c4 [2023-11-23 21:42:54,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/data/eb79ce73a/442cf68942634e7bb72de3737bea1b86 [2023-11-23 21:42:54,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:42:54,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:42:54,021 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:54,021 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:42:54,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:42:54,028 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc62d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54, skipping insertion in model container [2023-11-23 21:42:54,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,052 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:42:54,194 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:54,200 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:42:54,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:54,224 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:42:54,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54 WrapperNode [2023-11-23 21:42:54,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:54,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:54,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:42:54,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:42:54,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,256 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-11-23 21:42:54,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:54,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:42:54,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:42:54,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:42:54,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,269 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,275 INFO L189 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-23 21:42:54,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:42:54,298 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:42:54,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:42:54,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:42:54,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (1/1) ... [2023-11-23 21:42:54,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 21:42:54,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:54,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 21:42:54,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-23 21:42:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:42:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:42:54,431 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:42:54,433 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:42:54,551 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:42:54,560 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:42:54,561 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:42:54,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:54 BoogieIcfgContainer [2023-11-23 21:42:54,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:42:54,564 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-23 21:42:54,564 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-23 21:42:54,568 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-23 21:42:54,569 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 21:42:54,569 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 09:42:54" (1/3) ... [2023-11-23 21:42:54,570 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@579e5126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 09:42:54, skipping insertion in model container [2023-11-23 21:42:54,570 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 21:42:54,570 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:54" (2/3) ... [2023-11-23 21:42:54,571 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@579e5126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 09:42:54, skipping insertion in model container [2023-11-23 21:42:54,571 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 21:42:54,571 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:54" (3/3) ... [2023-11-23 21:42:54,573 INFO L332 chiAutomizerObserver]: Analyzing ICFG and-03-false.c [2023-11-23 21:42:54,631 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-23 21:42:54,632 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-23 21:42:54,632 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-23 21:42:54,632 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-23 21:42:54,632 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-23 21:42:54,632 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-23 21:42:54,633 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-23 21:42:54,633 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-23 21:42:54,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-11-23 21:42:54,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 21:42:54,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:42:54,657 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:42:54,662 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:42:54,663 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-23 21:42:54,663 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-23 21:42:54,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-11-23 21:42:54,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 21:42:54,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:42:54,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:42:54,665 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:42:54,666 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-23 21:42:54,673 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 8#L16-2true [2023-11-23 21:42:54,674 INFO L750 eck$LassoCheckResult]: Loop: 8#L16-2true assume !!(0 == main_~x~0#1); 2#L16true assume !(main_~x~0#1 >= 0);main_#t~post2#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 8#L16-2true [2023-11-23 21:42:54,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:54,681 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-23 21:42:54,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:54,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139279220] [2023-11-23 21:42:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:54,770 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:42:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:54,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:42:54,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:54,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1330, now seen corresponding path program 1 times [2023-11-23 21:42:54,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:54,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228804473] [2023-11-23 21:42:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:54,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:54,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228804473] [2023-11-23 21:42:54,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228804473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:54,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:54,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:42:54,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901073823] [2023-11-23 21:42:54,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:54,895 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-23 21:42:54,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:54,930 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-23 21:42:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:54,953 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2023-11-23 21:42:54,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2023-11-23 21:42:54,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 21:42:54,958 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2023-11-23 21:42:54,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-23 21:42:54,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-23 21:42:54,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2023-11-23 21:42:54,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:42:54,961 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-11-23 21:42:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2023-11-23 21:42:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-23 21:42:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-23 21:42:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-11-23 21:42:54,986 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-11-23 21:42:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:54,995 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-11-23 21:42:54,995 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-23 21:42:54,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-11-23 21:42:54,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-23 21:42:54,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 21:42:54,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 21:42:54,996 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 21:42:54,997 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-23 21:42:54,997 INFO L748 eck$LassoCheckResult]: Stem: 35#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 36#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 37#L16-2 [2023-11-23 21:42:54,997 INFO L750 eck$LassoCheckResult]: Loop: 37#L16-2 assume !!(0 == main_~x~0#1); 31#L16 assume main_~x~0#1 >= 0; 32#L17 assume 0 == main_~x~0#1 || 0 == main_~x~0#1 - 1;main_#t~nondet1#1 := 0; 33#L17-4 main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 37#L16-2 [2023-11-23 21:42:54,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-23 21:42:54,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:54,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896610494] [2023-11-23 21:42:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:54,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:55,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:42:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:55,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:42:55,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:55,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1265229, now seen corresponding path program 1 times [2023-11-23 21:42:55,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:55,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802791555] [2023-11-23 21:42:55,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:55,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:42:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:55,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:42:55,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:55,023 INFO L85 PathProgramCache]: Analyzing trace with hash 889692431, now seen corresponding path program 1 times [2023-11-23 21:42:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:55,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227205385] [2023-11-23 21:42:55,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:55,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:55,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:42:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:55,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:42:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:55,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:42:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:42:55,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 09:42:55 BoogieIcfgContainer [2023-11-23 21:42:55,145 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-23 21:42:55,146 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:42:55,146 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:42:55,146 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:42:55,147 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:54" (3/4) ... [2023-11-23 21:42:55,149 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-23 21:42:55,204 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:42:55,204 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:42:55,205 INFO L158 Benchmark]: Toolchain (without parser) took 1185.54ms. Allocated memory is still 203.4MB. Free memory was 171.5MB in the beginning and 120.7MB in the end (delta: 50.9MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2023-11-23 21:42:55,205 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 203.4MB. Free memory is still 178.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:42:55,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.57ms. Allocated memory is still 203.4MB. Free memory was 170.8MB in the beginning and 162.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:42:55,213 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.12ms. Allocated memory is still 203.4MB. Free memory was 162.0MB in the beginning and 160.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:42:55,214 INFO L158 Benchmark]: Boogie Preprocessor took 35.82ms. Allocated memory is still 203.4MB. Free memory was 160.1MB in the beginning and 158.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:42:55,214 INFO L158 Benchmark]: RCFGBuilder took 264.68ms. Allocated memory is still 203.4MB. Free memory was 158.4MB in the beginning and 149.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 21:42:55,215 INFO L158 Benchmark]: BuchiAutomizer took 581.49ms. Allocated memory is still 203.4MB. Free memory was 149.4MB in the beginning and 122.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-23 21:42:55,215 INFO L158 Benchmark]: Witness Printer took 58.30ms. Allocated memory is still 203.4MB. Free memory was 122.1MB in the beginning and 120.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:42:55,222 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 203.4MB. Free memory is still 178.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.57ms. Allocated memory is still 203.4MB. Free memory was 170.8MB in the beginning and 162.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.12ms. Allocated memory is still 203.4MB. Free memory was 162.0MB in the beginning and 160.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.82ms. Allocated memory is still 203.4MB. Free memory was 160.1MB in the beginning and 158.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 264.68ms. Allocated memory is still 203.4MB. Free memory was 158.4MB in the beginning and 149.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 581.49ms. Allocated memory is still 203.4MB. Free memory was 149.4MB in the beginning and 122.1MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 58.30ms. Allocated memory is still 203.4MB. Free memory was 122.1MB in the beginning and 120.7MB 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 Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. 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: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 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: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L12] int x; [L13] x = __VERIFIER_nondet_int() Loop: [L14] COND TRUE x==0 [L16] COND TRUE x >= 0 [L17] EXPR x&(x-1) [L17] x = x&(x-1) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x; [L13] x = __VERIFIER_nondet_int() Loop: [L14] COND TRUE x==0 [L16] COND TRUE x >= 0 [L17] EXPR x&(x-1) [L17] x = x&(x-1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-23 21:42:55,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1377f800-2c7c-44de-9874-ac2e127fe031/bin/uautomizer-verify-zZY32mL2XJ/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)