./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/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_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB --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 0.3.0-dev-d790fec [2024-11-27 23:38:39,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:38:39,694 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-27 23:38:39,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:38:39,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:38:39,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:38:39,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:38:39,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:38:39,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:38:39,739 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:38:39,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:38:39,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:38:39,740 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:38:39,741 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-27 23:38:39,741 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-27 23:38:39,741 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-27 23:38:39,741 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-27 23:38:39,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:38:39,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:38:39,743 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-27 23:38:39,743 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:38:39,743 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:38:39,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:38:39,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:38:39,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:38:39,744 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-27 23:38:39,744 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-27 23:38:39,744 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB 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 [2024-11-27 23:38:40,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:38:40,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:38:40,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:38:40,077 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:38:40,077 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:38:40,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2024-11-27 23:38:43,293 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/data/5d47b31c9/f7a967c4306a41f68739a2e2a3254dd4/FLAG9768fba86 [2024-11-27 23:38:43,581 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:38:43,582 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2024-11-27 23:38:43,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/data/5d47b31c9/f7a967c4306a41f68739a2e2a3254dd4/FLAG9768fba86 [2024-11-27 23:38:43,610 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/data/5d47b31c9/f7a967c4306a41f68739a2e2a3254dd4 [2024-11-27 23:38:43,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:38:43,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:38:43,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:43,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:38:43,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:38:43,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1024f265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43, skipping insertion in model container [2024-11-27 23:38:43,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:38:43,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:43,820 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:38:43,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:38:43,846 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:38:43,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43 WrapperNode [2024-11-27 23:38:43,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:38:43,848 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:43,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:38:43,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:38:43,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,873 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-11-27 23:38:43,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:38:43,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:38:43,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:38:43,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:38:43,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,882 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,889 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-27 23:38:43,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,891 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,892 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:38:43,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:38:43,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:38:43,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:38:43,902 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (1/1) ... [2024-11-27 23:38:43,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:38:43,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:43,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:38:43,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-27 23:38:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:38:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:38:44,038 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:38:44,040 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:38:44,091 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-27 23:38:44,091 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:38:44,100 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:38:44,100 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 23:38:44,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:44 BoogieIcfgContainer [2024-11-27 23:38:44,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:38:44,102 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-27 23:38:44,102 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-27 23:38:44,108 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-27 23:38:44,112 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 23:38:44,112 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.11 11:38:43" (1/3) ... [2024-11-27 23:38:44,113 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c7b3b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 11:38:44, skipping insertion in model container [2024-11-27 23:38:44,113 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 23:38:44,114 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:38:43" (2/3) ... [2024-11-27 23:38:44,114 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c7b3b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 11:38:44, skipping insertion in model container [2024-11-27 23:38:44,114 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 23:38:44,114 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:44" (3/3) ... [2024-11-27 23:38:44,115 INFO L363 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2024-11-27 23:38:44,171 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-27 23:38:44,171 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-27 23:38:44,172 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-27 23:38:44,172 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-27 23:38:44,172 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-27 23:38:44,172 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-27 23:38:44,172 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-27 23:38:44,172 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-27 23:38:44,177 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-27 23:38:44,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:38:44,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 23:38:44,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 23:38:44,196 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-27 23:38:44,197 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 23:38:44,197 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-27 23:38:44,197 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-27 23:38:44,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:38:44,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 23:38:44,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 23:38:44,199 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-27 23:38:44,199 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 23:38:44,206 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !(main_~k~0#1 >= 0);main_~i~0#1 := -1;" [2024-11-27 23:38:44,206 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 >= 0;" "havoc main_#t~nondet2#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" [2024-11-27 23:38:44,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2024-11-27 23:38:44,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:38:44,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811257233] [2024-11-27 23:38:44,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,303 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:38:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:38:44,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1381, now seen corresponding path program 1 times [2024-11-27 23:38:44,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:38:44,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794628767] [2024-11-27 23:38:44,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:44,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,331 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:38:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,335 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:38:44,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash 28695880, now seen corresponding path program 1 times [2024-11-27 23:38:44,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:38:44,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928017992] [2024-11-27 23:38:44,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:44,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:44,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 23:38:44,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928017992] [2024-11-27 23:38:44,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928017992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:38:44,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119377876] [2024-11-27 23:38:44,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:44,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:38:44,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:38:44,429 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:38:44,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:38:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:38:44,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:38:44,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:38:44,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:38:44,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119377876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:38:44,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:38:44,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 23:38:44,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362466428] [2024-11-27 23:38:44,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:38:44,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 23:38:44,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:38:44,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:38:44,555 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-11-27 23:38:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:38:44,580 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2024-11-27 23:38:44,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2024-11-27 23:38:44,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:38:44,588 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 5 states and 5 transitions. [2024-11-27 23:38:44,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-11-27 23:38:44,589 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-11-27 23:38:44,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 5 transitions. [2024-11-27 23:38:44,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 23:38:44,590 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5 states and 5 transitions. [2024-11-27 23:38:44,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 5 transitions. [2024-11-27 23:38:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2024-11-27 23:38:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-11-27 23:38:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2024-11-27 23:38:44,617 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5 states and 5 transitions. [2024-11-27 23:38:44,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:38:44,622 INFO L425 stractBuchiCegarLoop]: Abstraction has 5 states and 5 transitions. [2024-11-27 23:38:44,623 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-27 23:38:44,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 5 transitions. [2024-11-27 23:38:44,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:38:44,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 23:38:44,624 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 23:38:44,624 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-27 23:38:44,624 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 23:38:44,624 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~k~0#1 >= 0;" [2024-11-27 23:38:44,625 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 >= 0;" "havoc main_#t~nondet2#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" [2024-11-27 23:38:44,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-27 23:38:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:38:44,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809475685] [2024-11-27 23:38:44,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,632 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:38:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:38:44,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1381, now seen corresponding path program 2 times [2024-11-27 23:38:44,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:38:44,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397315472] [2024-11-27 23:38:44,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:44,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,648 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:38:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:38:44,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:38:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash 28693958, now seen corresponding path program 1 times [2024-11-27 23:38:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:38:44,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701394820] [2024-11-27 23:38:44,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:38:44,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:38:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,666 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:38:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:38:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,727 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:38:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:38:44,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.11 11:38:44 BoogieIcfgContainer [2024-11-27 23:38:44,764 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-27 23:38:44,766 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:38:44,766 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:38:44,766 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:38:44,767 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:38:44" (3/4) ... [2024-11-27 23:38:44,770 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-27 23:38:44,813 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:38:44,814 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:38:44,814 INFO L158 Benchmark]: Toolchain (without parser) took 1199.92ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 71.3MB in the end (delta: 46.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-27 23:38:44,815 INFO L158 Benchmark]: CDTParser took 1.32ms. Allocated memory is still 117.4MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:38:44,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.74ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 107.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:38:44,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.48ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 106.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:38:44,816 INFO L158 Benchmark]: Boogie Preprocessor took 24.96ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 105.6MB in the end (delta: 910.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:38:44,816 INFO L158 Benchmark]: RCFGBuilder took 201.56ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 97.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:38:44,816 INFO L158 Benchmark]: BuchiAutomizer took 662.46ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 73.1MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 23:38:44,816 INFO L158 Benchmark]: Witness Printer took 48.00ms. Allocated memory is still 142.6MB. Free memory was 73.0MB in the beginning and 71.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:38:44,823 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32ms. Allocated memory is still 117.4MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.74ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 107.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.48ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 106.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.96ms. Allocated memory is still 142.6MB. Free memory was 106.5MB in the beginning and 105.6MB in the end (delta: 910.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 201.56ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 97.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 662.46ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 73.1MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 48.00ms. Allocated memory is still 142.6MB. Free memory was 73.0MB in the beginning and 71.3MB in the end (delta: 1.7MB). There was no memory consumed. 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 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 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 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, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 7 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 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 Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-27 23:38:44,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:38:45,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_641a7af7-b347-4db8-bec1-0e1a0a331fbb/bin/uautomizer-verify-aQ6SnzHsRB/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)