./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_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/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_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1 --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 [2024-12-02 07:19:44,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:19:44,654 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-12-02 07:19:44,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:19:44,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:19:44,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:19:44,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:19:44,679 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:19:44,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:19:44,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:19:44,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:19:44,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:19:44,680 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:19:44,680 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-12-02 07:19:44,680 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-12-02 07:19:44,680 INFO L153 SettingsManager]: * Use old map elimination=false [2024-12-02 07:19:44,680 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-12-02 07:19:44,680 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-12-02 07:19:44,680 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-12-02 07:19:44,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:19:44,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-12-02 07:19:44,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:19:44,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:19:44,681 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-12-02 07:19:44,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-12-02 07:19:44,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-12-02 07:19:44,681 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 07:19:44,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:19:44,682 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-12-02 07:19:44,682 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:19:44,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:19:44,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:19:44,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:19:44,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:19:44,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-12-02 07:19:44,683 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-12-02 07:19:44,683 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_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1 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 [2024-12-02 07:19:44,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:19:44,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:19:44,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:19:44,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:19:44,903 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:19:44,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2024-12-02 07:19:47,508 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/data/77a8b4a99/5e0e077c0e314674a16426bc19b26352/FLAGc2e6b65a3 [2024-12-02 07:19:47,693 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:19:47,693 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2024-12-02 07:19:47,698 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/data/77a8b4a99/5e0e077c0e314674a16426bc19b26352/FLAGc2e6b65a3 [2024-12-02 07:19:48,092 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/data/77a8b4a99/5e0e077c0e314674a16426bc19b26352 [2024-12-02 07:19:48,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:19:48,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:19:48,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:19:48,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:19:48,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:19:48,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc14961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48, skipping insertion in model container [2024-12-02 07:19:48,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:19:48,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:19:48,215 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:19:48,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:19:48,237 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:19:48,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48 WrapperNode [2024-12-02 07:19:48,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:19:48,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:19:48,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:19:48,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:19:48,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,255 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-12-02 07:19:48,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:19:48,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:19:48,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:19:48,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:19:48,262 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,266 INFO L175 MemorySlicer]: No memory access in input program. [2024-12-02 07:19:48,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,267 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,271 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:19:48,272 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:19:48,272 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:19:48,272 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:19:48,273 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (1/1) ... [2024-12-02 07:19:48,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 07:19:48,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:19:48,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 07:19:48,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-12-02 07:19:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:19:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:19:48,376 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:19:48,378 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:19:48,418 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-12-02 07:19:48,418 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:19:48,424 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:19:48,424 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 07:19:48,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:19:48 BoogieIcfgContainer [2024-12-02 07:19:48,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:19:48,425 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-12-02 07:19:48,425 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-12-02 07:19:48,429 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-12-02 07:19:48,429 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 07:19:48,430 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 07:19:48" (1/3) ... [2024-12-02 07:19:48,430 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f61736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 07:19:48, skipping insertion in model container [2024-12-02 07:19:48,430 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 07:19:48,430 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:19:48" (2/3) ... [2024-12-02 07:19:48,431 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f61736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 07:19:48, skipping insertion in model container [2024-12-02 07:19:48,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 07:19:48,431 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:19:48" (3/3) ... [2024-12-02 07:19:48,432 INFO L363 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2024-12-02 07:19:48,467 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-12-02 07:19:48,467 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-12-02 07:19:48,467 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-12-02 07:19:48,468 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-12-02 07:19:48,468 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-12-02 07:19:48,468 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-12-02 07:19:48,468 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-12-02 07:19:48,468 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-12-02 07:19:48,472 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) [2024-12-02 07:19:48,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-12-02 07:19:48,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 07:19:48,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 07:19:48,486 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-12-02 07:19:48,486 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-12-02 07:19:48,486 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-12-02 07:19:48,486 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) [2024-12-02 07:19:48,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-12-02 07:19:48,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 07:19:48,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 07:19:48,487 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-12-02 07:19:48,487 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-12-02 07:19:48,492 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !(main_~k~0#1 >= 0);main_~i~0#1 := -1;" [2024-12-02 07:19:48,492 INFO L749 eck$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;" [2024-12-02 07:19:48,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:19:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2024-12-02 07:19:48,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 07:19:48,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500715515] [2024-12-02 07:19:48,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:48,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:19:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,550 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:19:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 07:19:48,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:19:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1381, now seen corresponding path program 1 times [2024-12-02 07:19:48,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 07:19:48,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271783631] [2024-12-02 07:19:48,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:19:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,570 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:19:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 07:19:48,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:19:48,575 INFO L85 PathProgramCache]: Analyzing trace with hash 28695880, now seen corresponding path program 1 times [2024-12-02 07:19:48,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 07:19:48,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612539874] [2024-12-02 07:19:48,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:48,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:19:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:19:48,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-12-02 07:19:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612539874] [2024-12-02 07:19:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612539874] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:19:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733576845] [2024-12-02 07:19:48,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:48,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:19:48,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:19:48,648 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:19:48,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:19:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:19:48,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:19:48,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:19:48,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:19:48,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733576845] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:19:48,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:19:48,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-12-02 07:19:48,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598389400] [2024-12-02 07:19:48,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:19:48,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-12-02 07:19:48,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:19:48,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:19:48,742 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) [2024-12-02 07:19:48,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:19:48,757 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2024-12-02 07:19:48,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2024-12-02 07:19:48,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-12-02 07:19:48,762 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 5 states and 5 transitions. [2024-12-02 07:19:48,762 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-12-02 07:19:48,762 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-12-02 07:19:48,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 5 transitions. [2024-12-02 07:19:48,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-12-02 07:19:48,763 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5 states and 5 transitions. [2024-12-02 07:19:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 5 transitions. [2024-12-02 07:19:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2024-12-02 07:19:48,777 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) [2024-12-02 07:19:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2024-12-02 07:19:48,779 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5 states and 5 transitions. [2024-12-02 07:19:48,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:19:48,783 INFO L425 stractBuchiCegarLoop]: Abstraction has 5 states and 5 transitions. [2024-12-02 07:19:48,783 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-12-02 07:19:48,783 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 5 transitions. [2024-12-02 07:19:48,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-12-02 07:19:48,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 07:19:48,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 07:19:48,784 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-12-02 07:19:48,784 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-12-02 07:19:48,784 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~k~0#1 >= 0;" [2024-12-02 07:19:48,784 INFO L749 eck$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;" [2024-12-02 07:19:48,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:19:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-12-02 07:19:48,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 07:19:48,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538267944] [2024-12-02 07:19:48,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:48,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:19:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,788 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:19:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 07:19:48,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:19:48,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1381, now seen corresponding path program 2 times [2024-12-02 07:19:48,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 07:19:48,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984764155] [2024-12-02 07:19:48,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:48,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:19:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,794 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:19:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 07:19:48,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:19:48,797 INFO L85 PathProgramCache]: Analyzing trace with hash 28693958, now seen corresponding path program 1 times [2024-12-02 07:19:48,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 07:19:48,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377481171] [2024-12-02 07:19:48,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:48,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:19:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,800 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:19:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 07:19:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,830 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:19:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:19:48,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 07:19:48 BoogieIcfgContainer [2024-12-02 07:19:48,853 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-12-02 07:19:48,854 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:19:48,854 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:19:48,854 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:19:48,854 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:19:48" (3/4) ... [2024-12-02 07:19:48,856 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-12-02 07:19:48,877 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 07:19:48,877 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:19:48,878 INFO L158 Benchmark]: Toolchain (without parser) took 782.84ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 70.6MB in the end (delta: 46.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-12-02 07:19:48,878 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:19:48,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.76ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 107.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:19:48,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.29ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 106.3MB in the end (delta: 848.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:19:48,879 INFO L158 Benchmark]: Boogie Preprocessor took 15.57ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 105.4MB in the end (delta: 896.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:19:48,879 INFO L158 Benchmark]: RCFGBuilder took 152.60ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 96.8MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:19:48,880 INFO L158 Benchmark]: BuchiAutomizer took 428.08ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 72.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 07:19:48,880 INFO L158 Benchmark]: Witness Printer took 23.61ms. Allocated memory is still 142.6MB. Free memory was 72.2MB in the beginning and 70.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:19:48,882 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.76ms. Allocated memory is still 142.6MB. Free memory was 117.0MB in the beginning and 107.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.29ms. Allocated memory is still 142.6MB. Free memory was 107.2MB in the beginning and 106.3MB in the end (delta: 848.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.57ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 105.4MB in the end (delta: 896.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 152.60ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 96.8MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 428.08ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 72.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 23.61ms. Allocated memory is still 142.6MB. Free memory was 72.2MB in the beginning and 70.6MB in the end (delta: 1.6MB). 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 0.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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! [2024-12-02 07:19:48,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:19:49,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a073c4d-9a69-41a5-ad93-5355a335b8cb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)