./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/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_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/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 64bit --witnessprinter.graph.data.programhash c06467573d5b161d2e6fae8b3debbeebc37f400272e6a21d533eff435db2aec4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:10:29,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:10:29,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-29 05:10:29,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:10:29,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:10:29,406 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:10:29,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:10:29,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:10:29,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:10:29,409 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:10:29,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:10:29,411 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:10:29,411 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:10:29,412 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 05:10:29,412 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 05:10:29,413 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 05:10:29,414 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 05:10:29,414 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 05:10:29,415 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 05:10:29,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:10:29,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 05:10:29,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:10:29,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:10:29,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 05:10:29,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 05:10:29,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 05:10:29,420 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:10:29,420 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:10:29,421 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 05:10:29,421 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:10:29,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:10:29,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:10:29,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:10:29,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:10:29,424 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 05:10:29,424 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_cfd76a11-f9de-4f98-b5ca-14e99afae8de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c06467573d5b161d2e6fae8b3debbeebc37f400272e6a21d533eff435db2aec4 [2023-11-29 05:10:29,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:10:29,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:10:29,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:10:29,730 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:10:29,731 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:10:29,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2023-11-29 05:10:32,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:10:32,886 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:10:32,886 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2023-11-29 05:10:32,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/data/d907e342d/71aa3a628f89488389942d7ebd1e2dea/FLAG25f1a2ab7 [2023-11-29 05:10:32,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/data/d907e342d/71aa3a628f89488389942d7ebd1e2dea [2023-11-29 05:10:32,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:10:32,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:10:32,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:10:32,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:10:32,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:10:32,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:10:32" (1/1) ... [2023-11-29 05:10:32,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f37f1d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:32, skipping insertion in model container [2023-11-29 05:10:32,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:10:32" (1/1) ... [2023-11-29 05:10:32,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:10:33,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:10:33,057 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:10:33,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:10:33,083 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:10:33,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33 WrapperNode [2023-11-29 05:10:33,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:10:33,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:10:33,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:10:33,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:10:33,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,113 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-11-29 05:10:33,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:10:33,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:10:33,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:10:33,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:10:33,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,133 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 05:10:33,133 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,133 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:10:33,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:10:33,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:10:33,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:10:33,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (1/1) ... [2023-11-29 05:10:33,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 05:10:33,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:33,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 05:10:33,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 05:10:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:10:33,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:10:33,307 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:10:33,310 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:10:33,367 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:10:33,378 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:10:33,378 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:10:33,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:10:33 BoogieIcfgContainer [2023-11-29 05:10:33,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:10:33,382 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 05:10:33,382 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 05:10:33,387 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 05:10:33,388 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 05:10:33,388 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 05:10:32" (1/3) ... [2023-11-29 05:10:33,390 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e05ff3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 05:10:33, skipping insertion in model container [2023-11-29 05:10:33,390 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 05:10:33,390 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:10:33" (2/3) ... [2023-11-29 05:10:33,391 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@e05ff3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 05:10:33, skipping insertion in model container [2023-11-29 05:10:33,391 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 05:10:33,391 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:10:33" (3/3) ... [2023-11-29 05:10:33,393 INFO L332 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2023-11-29 05:10:33,465 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 05:10:33,466 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 05:10:33,466 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 05:10:33,466 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 05:10:33,466 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 05:10:33,466 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 05:10:33,466 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 05:10:33,467 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 05:10:33,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 05:10:33,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 05:10:33,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 05:10:33,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 05:10:33,501 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 05:10:33,501 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 05:10:33,501 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 05:10:33,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 05:10:33,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 05:10:33,503 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 05:10:33,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 05:10:33,504 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 05:10:33,504 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 05:10:33,514 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 3#L18true assume !(main_~k~0#1 >= 0);main_~i~0#1 := -1; 8#L23-1true [2023-11-29 05:10:33,514 INFO L750 eck$LassoCheckResult]: Loop: 8#L23-1true assume !!(main_~i~0#1 >= 0);havoc main_#t~nondet2#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 8#L23-1true [2023-11-29 05:10:33,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:33,523 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2023-11-29 05:10:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:33,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58224951] [2023-11-29 05:10:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:33,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:10:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:10:33,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2023-11-29 05:10:33,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:33,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590794987] [2023-11-29 05:10:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:33,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:10:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:10:33,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2023-11-29 05:10:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041785160] [2023-11-29 05:10:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:10:33,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:33,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041785160] [2023-11-29 05:10:33,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041785160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:10:33,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:10:33,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:10:33,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686725025] [2023-11-29 05:10:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:10:33,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:33,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:10:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:10:33,815 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 05:10:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:33,835 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2023-11-29 05:10:33,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2023-11-29 05:10:33,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 05:10:33,839 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 4 states and 4 transitions. [2023-11-29 05:10:33,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-11-29 05:10:33,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-11-29 05:10:33,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 4 transitions. [2023-11-29 05:10:33,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:10:33,842 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4 states and 4 transitions. [2023-11-29 05:10:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 4 transitions. [2023-11-29 05:10:33,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2023-11-29 05:10:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 05:10:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2023-11-29 05:10:33,863 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4 states and 4 transitions. [2023-11-29 05:10:33,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:10:33,869 INFO L428 stractBuchiCegarLoop]: Abstraction has 4 states and 4 transitions. [2023-11-29 05:10:33,869 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 05:10:33,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 4 transitions. [2023-11-29 05:10:33,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-29 05:10:33,870 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 05:10:33,870 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 05:10:33,870 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 05:10:33,870 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-29 05:10:33,871 INFO L748 eck$LassoCheckResult]: Stem: 30#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 31#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~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 28#L18 assume main_~k~0#1 >= 0; 29#L23-1 [2023-11-29 05:10:33,871 INFO L750 eck$LassoCheckResult]: Loop: 29#L23-1 assume !!(main_~i~0#1 >= 0);havoc main_#t~nondet2#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 29#L23-1 [2023-11-29 05:10:33,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-29 05:10:33,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:33,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126495473] [2023-11-29 05:10:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:10:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:10:33,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 2 times [2023-11-29 05:10:33,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:33,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052327080] [2023-11-29 05:10:33,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:33,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:10:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:10:33,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:33,894 INFO L85 PathProgramCache]: Analyzing trace with hash 925614, now seen corresponding path program 1 times [2023-11-29 05:10:33,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:33,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571370746] [2023-11-29 05:10:33,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:33,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:10:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:10:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:10:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:10:33,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 05:10:33 BoogieIcfgContainer [2023-11-29 05:10:33,959 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 05:10:33,959 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:10:33,959 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:10:33,960 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:10:33,960 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:10:33" (3/4) ... [2023-11-29 05:10:33,962 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 05:10:33,988 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 05:10:33,988 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:10:33,989 INFO L158 Benchmark]: Toolchain (without parser) took 1079.80ms. Allocated memory was 159.4MB in the beginning and 251.7MB in the end (delta: 92.3MB). Free memory was 115.1MB in the beginning and 209.1MB in the end (delta: -94.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:10:33,990 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 159.4MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:10:33,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.27ms. Allocated memory is still 159.4MB. Free memory was 114.7MB in the beginning and 105.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 05:10:33,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.13ms. Allocated memory is still 159.4MB. Free memory was 105.5MB in the beginning and 104.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:10:33,992 INFO L158 Benchmark]: Boogie Preprocessor took 27.58ms. Allocated memory is still 159.4MB. Free memory was 104.2MB in the beginning and 102.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:10:33,992 INFO L158 Benchmark]: RCFGBuilder took 237.95ms. Allocated memory is still 159.4MB. Free memory was 102.9MB in the beginning and 95.0MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 05:10:33,993 INFO L158 Benchmark]: BuchiAutomizer took 577.01ms. Allocated memory was 159.4MB in the beginning and 251.7MB in the end (delta: 92.3MB). Free memory was 95.0MB in the beginning and 211.2MB in the end (delta: -116.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:10:33,994 INFO L158 Benchmark]: Witness Printer took 29.27ms. Allocated memory is still 251.7MB. Free memory was 211.2MB in the beginning and 209.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:10:33,997 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 159.4MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.27ms. Allocated memory is still 159.4MB. Free memory was 114.7MB in the beginning and 105.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.13ms. Allocated memory is still 159.4MB. Free memory was 105.5MB in the beginning and 104.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.58ms. Allocated memory is still 159.4MB. Free memory was 104.2MB in the beginning and 102.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 237.95ms. Allocated memory is still 159.4MB. Free memory was 102.9MB in the beginning and 95.0MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 577.01ms. Allocated memory was 159.4MB in the beginning and 251.7MB in the end (delta: 92.3MB). Free memory was 95.0MB in the beginning and 211.2MB in the end (delta: -116.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.27ms. Allocated memory is still 251.7MB. Free memory was 211.2MB in the beginning and 209.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program 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 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 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: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 VAL [k=0] Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 VAL [k=0] Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 05:10:34,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfd76a11-f9de-4f98-b5ca-14e99afae8de/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)