./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC --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 bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:12:08,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:12:08,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-24 00:12:08,544 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:12:08,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:12:08,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:12:08,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:12:08,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:12:08,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:12:08,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:12:08,584 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:12:08,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:12:08,585 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:12:08,586 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-24 00:12:08,587 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-24 00:12:08,587 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-24 00:12:08,587 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-24 00:12:08,588 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-24 00:12:08,588 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-24 00:12:08,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:12:08,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-24 00:12:08,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:12:08,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:12:08,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-24 00:12:08,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-24 00:12:08,589 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-24 00:12:08,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 00:12:08,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:12:08,590 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-24 00:12:08,590 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:12:08,590 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:12:08,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:12:08,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:12:08,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:12:08,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-24 00:12:08,590 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-24 00:12:08,591 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_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC 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 -> bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba [2024-11-24 00:12:08,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:12:08,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:12:08,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:12:08,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:12:08,966 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:12:08,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-24 00:12:12,135 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/data/0a89bc76c/5b6de1d6d522431aad29ff6f47cd1031/FLAGc3ce17b98 [2024-11-24 00:12:12,427 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:12:12,428 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-24 00:12:12,441 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/data/0a89bc76c/5b6de1d6d522431aad29ff6f47cd1031/FLAGc3ce17b98 [2024-11-24 00:12:12,468 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/data/0a89bc76c/5b6de1d6d522431aad29ff6f47cd1031 [2024-11-24 00:12:12,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:12:12,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:12:12,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:12:12,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:12:12,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:12:12,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4f6a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12, skipping insertion in model container [2024-11-24 00:12:12,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,507 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:12:12,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:12:12,695 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:12:12,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:12:12,723 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:12:12,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12 WrapperNode [2024-11-24 00:12:12,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:12:12,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:12:12,726 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:12:12,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:12:12,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,755 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2024-11-24 00:12:12,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:12:12,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:12:12,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:12:12,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:12:12,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,774 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-24 00:12:12,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,778 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:12:12,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:12:12,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:12:12,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:12:12,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (1/1) ... [2024-11-24 00:12:12,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:12,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:12,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:12,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-24 00:12:12,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:12:12,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:12:12,948 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:12:12,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:12:13,006 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-24 00:12:13,006 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:12:13,016 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:12:13,016 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:12:13,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:12:13 BoogieIcfgContainer [2024-11-24 00:12:13,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:12:13,018 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-24 00:12:13,018 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-24 00:12:13,025 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-24 00:12:13,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 00:12:13,026 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 24.11 12:12:12" (1/3) ... [2024-11-24 00:12:13,027 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@346d5533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.11 12:12:13, skipping insertion in model container [2024-11-24 00:12:13,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 00:12:13,027 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:12:12" (2/3) ... [2024-11-24 00:12:13,028 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@346d5533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.11 12:12:13, skipping insertion in model container [2024-11-24 00:12:13,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 00:12:13,028 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:12:13" (3/3) ... [2024-11-24 00:12:13,029 INFO L363 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-24 00:12:13,081 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-24 00:12:13,082 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-24 00:12:13,082 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-24 00:12:13,082 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-24 00:12:13,082 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-24 00:12:13,083 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-24 00:12:13,083 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-24 00:12:13,083 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-24 00:12:13,088 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) [2024-11-24 00:12:13,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:13,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 00:12:13,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 00:12:13,109 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-24 00:12:13,109 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 00:12:13,109 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-24 00:12:13,109 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) [2024-11-24 00:12:13,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:13,110 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 00:12:13,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 00:12:13,111 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-24 00:12:13,111 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 00:12:13,118 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" [2024-11-24 00:12:13,119 INFO L749 eck$LassoCheckResult]: Loop: "assume 0 != main_~x~0#1;" "assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1;" [2024-11-24 00:12:13,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-24 00:12:13,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489704466] [2024-11-24 00:12:13,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:13,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:13,207 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:13,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:13,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1225, now seen corresponding path program 1 times [2024-11-24 00:12:13,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:13,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032514436] [2024-11-24 00:12:13,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:13,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:13,239 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:13,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:13,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2024-11-24 00:12:13,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:13,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909615274] [2024-11-24 00:12:13,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:13,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:13,255 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:13,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:13,378 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 00:12:13,379 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 00:12:13,379 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 00:12:13,379 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 00:12:13,379 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-24 00:12:13,380 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:13,380 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 00:12:13,381 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 00:12:13,381 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2024-11-24 00:12:13,381 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 00:12:13,381 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 00:12:13,403 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:13,423 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:13,436 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:13,593 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 00:12:13,593 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-24 00:12:13,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:13,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:13,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-24 00:12:13,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:13,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:13,637 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 00:12:13,637 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 00:12:13,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-24 00:12:13,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:13,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:13,652 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:13,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-24 00:12:13,658 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:13,658 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:13,690 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 00:12:13,690 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 00:12:13,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-24 00:12:13,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:13,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:13,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:13,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-24 00:12:13,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:13,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:13,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:13,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:13,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:13,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-24 00:12:13,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:13,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-24 00:12:13,785 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-24 00:12:13,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:13,790 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 00:12:13,790 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 00:12:13,790 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 00:12:13,790 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 00:12:13,790 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 00:12:13,790 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:13,790 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 00:12:13,790 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 00:12:13,790 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2024-11-24 00:12:13,790 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 00:12:13,790 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 00:12:13,792 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:13,801 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:13,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:13,946 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 00:12:13,951 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 00:12:13,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:13,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:13,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:13,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-24 00:12:13,961 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:13,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:13,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:13,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:13,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:13,995 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 00:12:13,995 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 00:12:14,010 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 00:12:14,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:14,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:14,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-24 00:12:14,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:14,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:14,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:14,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:14,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:14,057 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 00:12:14,057 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 00:12:14,074 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 00:12:14,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:14,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:14,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:14,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-24 00:12:14,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:14,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:14,110 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 00:12:14,111 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:14,111 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:14,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:14,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 00:12:14,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 00:12:14,117 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 00:12:14,122 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-24 00:12:14,125 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-24 00:12:14,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:14,131 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:14,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-24 00:12:14,134 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 00:12:14,134 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-24 00:12:14,134 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 00:12:14,135 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-24 00:12:14,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:14,149 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-24 00:12:14,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:14,194 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:12:14,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:14,209 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:12:14,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:14,247 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-24 00:12:14,250 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. 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, 3 states have (on average 1.3333333333333333) 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) [2024-11-24 00:12:14,294 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. 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, 3 states have (on average 1.3333333333333333) 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) Result 17 states and 24 transitions. Complement of second has 6 states. [2024-11-24 00:12:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 00:12:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) 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) [2024-11-24 00:12:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2024-11-24 00:12:14,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2024-11-24 00:12:14,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:14,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-24 00:12:14,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:14,310 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-24 00:12:14,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:14,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2024-11-24 00:12:14,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:14,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 8 states and 11 transitions. [2024-11-24 00:12:14,317 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-11-24 00:12:14,317 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-24 00:12:14,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-11-24 00:12:14,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-24 00:12:14,318 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-24 00:12:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-11-24 00:12:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-24 00:12:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2024-11-24 00:12:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2024-11-24 00:12:14,341 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-24 00:12:14,342 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-24 00:12:14,342 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-24 00:12:14,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2024-11-24 00:12:14,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:14,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 00:12:14,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 00:12:14,343 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-24 00:12:14,343 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 00:12:14,343 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" "assume 0 != main_~x~0#1;" "assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1;" [2024-11-24 00:12:14,343 INFO L749 eck$LassoCheckResult]: Loop: "assume 0 != main_~x~0#1;" "assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1;" [2024-11-24 00:12:14,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:14,344 INFO L85 PathProgramCache]: Analyzing trace with hash 925705, now seen corresponding path program 1 times [2024-11-24 00:12:14,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:14,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589438474] [2024-11-24 00:12:14,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:14,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:14,350 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:14,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:14,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1225, now seen corresponding path program 2 times [2024-11-24 00:12:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684438687] [2024-11-24 00:12:14,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:14,360 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:14,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:14,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:14,365 INFO L85 PathProgramCache]: Analyzing trace with hash 889602769, now seen corresponding path program 1 times [2024-11-24 00:12:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:14,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887807677] [2024-11-24 00:12:14,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:14,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:14,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-24 00:12:14,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887807677] [2024-11-24 00:12:14,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887807677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:12:14,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733909843] [2024-11-24 00:12:14,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:14,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:12:14,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:14,491 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:12:14,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:12:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:14,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:12:14,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:14,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:12:14,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733909843] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:12:14,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:12:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-24 00:12:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126673012] [2024-11-24 00:12:14,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:12:14,642 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 00:12:14,642 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 00:12:14,642 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 00:12:14,642 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 00:12:14,643 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-24 00:12:14,643 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,643 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 00:12:14,643 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 00:12:14,643 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2024-11-24 00:12:14,643 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 00:12:14,643 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 00:12:14,644 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:14,648 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:14,653 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:14,756 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 00:12:14,756 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-24 00:12:14,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:14,762 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:14,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:14,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:14,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:14,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-24 00:12:14,792 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 00:12:14,792 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 00:12:14,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-24 00:12:14,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:14,801 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:14,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-24 00:12:14,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:14,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:14,825 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 00:12:14,825 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 00:12:14,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:14,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:14,836 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:14,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-24 00:12:14,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:14,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:14,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-24 00:12:14,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:14,875 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:14,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-24 00:12:14,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:14,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-24 00:12:14,918 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-24 00:12:14,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:14,922 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 00:12:14,922 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 00:12:14,922 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 00:12:14,922 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 00:12:14,923 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 00:12:14,923 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:14,923 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 00:12:14,923 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 00:12:14,923 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2024-11-24 00:12:14,923 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 00:12:14,923 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 00:12:14,925 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:14,935 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:14,948 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:15,014 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 00:12:15,014 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 00:12:15,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,017 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-24 00:12:15,021 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:15,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:15,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:15,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:15,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:15,040 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 00:12:15,041 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 00:12:15,048 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 00:12:15,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-24 00:12:15,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,059 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-24 00:12:15,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:15,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:15,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 00:12:15,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:15,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:15,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:15,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 00:12:15,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 00:12:15,079 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 00:12:15,083 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-24 00:12:15,083 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-24 00:12:15,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,085 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,095 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 00:12:15,095 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-24 00:12:15,095 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 00:12:15,095 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-24 00:12:15,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-24 00:12:15,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-24 00:12:15,108 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-24 00:12:15,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:15,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:12:15,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:15,156 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:12:15,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:15,161 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-24 00:12:15,162 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-24 00:12:15,182 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Result 12 states and 17 transitions. Complement of second has 5 states. [2024-11-24 00:12:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 00:12:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-24 00:12:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-11-24 00:12:15,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-24 00:12:15,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:15,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-24 00:12:15,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:15,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2024-11-24 00:12:15,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:15,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2024-11-24 00:12:15,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:15,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2024-11-24 00:12:15,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-24 00:12:15,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-24 00:12:15,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2024-11-24 00:12:15,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-24 00:12:15,193 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-11-24 00:12:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2024-11-24 00:12:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-24 00:12:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2024-11-24 00:12:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2024-11-24 00:12:15,196 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-11-24 00:12:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-24 00:12:15,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:12:15,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:12:15,204 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-24 00:12:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:12:15,234 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2024-11-24 00:12:15,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2024-11-24 00:12:15,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:15,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2024-11-24 00:12:15,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-24 00:12:15,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-24 00:12:15,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2024-11-24 00:12:15,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-24 00:12:15,236 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-11-24 00:12:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2024-11-24 00:12:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2024-11-24 00:12:15,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-24 00:12:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2024-11-24 00:12:15,237 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-11-24 00:12:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:12:15,239 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-11-24 00:12:15,239 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-24 00:12:15,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2024-11-24 00:12:15,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:15,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 00:12:15,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 00:12:15,240 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-24 00:12:15,240 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 00:12:15,241 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" "assume 0 != main_~x~0#1;" [2024-11-24 00:12:15,241 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1;" "assume 0 != main_~x~0#1;" [2024-11-24 00:12:15,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2024-11-24 00:12:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:15,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861544069] [2024-11-24 00:12:15,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:15,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,251 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:15,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1403, now seen corresponding path program 1 times [2024-11-24 00:12:15,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:15,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891660953] [2024-11-24 00:12:15,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:15,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,269 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:15,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash 28696863, now seen corresponding path program 2 times [2024-11-24 00:12:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:15,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376280294] [2024-11-24 00:12:15,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,288 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,296 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:15,331 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 00:12:15,331 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 00:12:15,331 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 00:12:15,331 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 00:12:15,331 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-24 00:12:15,332 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,332 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 00:12:15,332 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 00:12:15,332 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2024-11-24 00:12:15,332 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 00:12:15,332 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 00:12:15,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:15,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:15,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:15,415 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 00:12:15,416 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-24 00:12:15,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,418 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-24 00:12:15,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:15,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:15,451 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 00:12:15,451 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 00:12:15,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-24 00:12:15,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,465 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:15,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:15,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-24 00:12:15,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:15,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,501 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-24 00:12:15,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-24 00:12:15,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:15,567 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-24 00:12:15,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-24 00:12:15,572 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 00:12:15,572 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 00:12:15,572 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 00:12:15,572 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 00:12:15,572 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 00:12:15,572 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,572 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 00:12:15,572 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 00:12:15,572 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2024-11-24 00:12:15,572 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 00:12:15,572 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 00:12:15,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:15,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:15,594 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:15,657 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 00:12:15,657 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 00:12:15,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,659 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-24 00:12:15,664 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:15,678 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:15,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 00:12:15,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:15,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:15,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:15,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 00:12:15,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 00:12:15,688 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 00:12:15,693 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-24 00:12:15,693 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-24 00:12:15,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,699 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-24 00:12:15,701 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 00:12:15,701 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-24 00:12:15,701 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 00:12:15,701 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-24 00:12:15,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-24 00:12:15,709 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-24 00:12:15,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:15,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:12:15,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:15,747 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:12:15,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:15,777 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 00:12:15,777 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 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) [2024-11-24 00:12:15,792 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. 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) Result 12 states and 14 transitions. Complement of second has 5 states. [2024-11-24 00:12:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 00:12:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2024-11-24 00:12:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-24 00:12:15,794 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-24 00:12:15,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:15,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-24 00:12:15,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:15,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-24 00:12:15,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:15,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2024-11-24 00:12:15,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:15,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2024-11-24 00:12:15,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-11-24 00:12:15,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-11-24 00:12:15,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-11-24 00:12:15,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-24 00:12:15,796 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-24 00:12:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-11-24 00:12:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-11-24 00:12:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:15,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-11-24 00:12:15,797 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-24 00:12:15,797 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-24 00:12:15,797 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-24 00:12:15,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-11-24 00:12:15,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 00:12:15,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 00:12:15,798 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 00:12:15,798 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2024-11-24 00:12:15,798 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 00:12:15,798 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" "assume 0 != main_~x~0#1;" "assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1;" "assume 0 != main_~x~0#1;" [2024-11-24 00:12:15,798 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1;" "assume 0 != main_~x~0#1;" [2024-11-24 00:12:15,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash 28696925, now seen corresponding path program 2 times [2024-11-24 00:12:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:15,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832571789] [2024-11-24 00:12:15,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,804 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:15,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:15,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1403, now seen corresponding path program 2 times [2024-11-24 00:12:15,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:15,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336713555] [2024-11-24 00:12:15,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:15,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,818 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:12:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:12:15,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 00:12:15,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1807941591, now seen corresponding path program 2 times [2024-11-24 00:12:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 00:12:15,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399648320] [2024-11-24 00:12:15,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:15,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-24 00:12:15,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399648320] [2024-11-24 00:12:15,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399648320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:12:15,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544961012] [2024-11-24 00:12:15,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:12:15,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:12:15,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:15,896 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:12:15,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 00:12:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:15,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:12:15,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:15,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:12:15,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544961012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:12:15,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:12:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-24 00:12:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330360495] [2024-11-24 00:12:15,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:12:15,993 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 00:12:15,993 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 00:12:15,993 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 00:12:15,993 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 00:12:15,993 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-24 00:12:15,993 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:15,993 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 00:12:15,994 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 00:12:15,994 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2024-11-24 00:12:15,994 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 00:12:15,994 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 00:12:15,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:15,999 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:16,003 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:16,059 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 00:12:16,060 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-24 00:12:16,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:16,065 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:16,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-24 00:12:16,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:16,069 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:16,094 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 00:12:16,094 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 00:12:16,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-24 00:12:16,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:16,102 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:16,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-24 00:12:16,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:16,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:16,125 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 00:12:16,125 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 00:12:16,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:16,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:16,134 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:16,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-24 00:12:16,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 00:12:16,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:16,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-24 00:12:16,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:16,155 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:16,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-24 00:12:16,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-24 00:12:16,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 00:12:16,199 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-24 00:12:16,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-11-24 00:12:16,202 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 00:12:16,202 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 00:12:16,202 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 00:12:16,203 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 00:12:16,203 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 00:12:16,203 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,203 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 00:12:16,203 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 00:12:16,203 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2024-11-24 00:12:16,203 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 00:12:16,203 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 00:12:16,204 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:16,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:16,216 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 00:12:16,270 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 00:12:16,270 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 00:12:16,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:16,272 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:16,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-24 00:12:16,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:16,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:16,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:16,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:16,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:16,288 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 00:12:16,288 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 00:12:16,293 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 00:12:16,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-11-24 00:12:16,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:16,305 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:16,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-24 00:12:16,309 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:16,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:16,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:16,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:16,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:16,326 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 00:12:16,326 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 00:12:16,330 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 00:12:16,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-11-24 00:12:16,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:16,341 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:16,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-24 00:12:16,346 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 00:12:16,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 00:12:16,361 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 00:12:16,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 00:12:16,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 00:12:16,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 00:12:16,362 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 00:12:16,362 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 00:12:16,366 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 00:12:16,370 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-24 00:12:16,371 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-24 00:12:16,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 00:12:16,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:16,375 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 00:12:16,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-24 00:12:16,377 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 00:12:16,377 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-24 00:12:16,377 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 00:12:16,377 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-24 00:12:16,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-11-24 00:12:16,387 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-24 00:12:16,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:16,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:12:16,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:16,429 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:12:16,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:16,454 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 00:12:16,454 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:16,465 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2024-11-24 00:12:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-24 00:12:16,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-11-24 00:12:16,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-24 00:12:16,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:16,468 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-24 00:12:16,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:16,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:12:16,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:16,504 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:12:16,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:16,538 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 00:12:16,538 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:16,544 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2024-11-24 00:12:16,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-24 00:12:16,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-11-24 00:12:16,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-24 00:12:16,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:16,549 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-24 00:12:16,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:16,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:12:16,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:12:16,596 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:12:16,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:12:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:12:16,619 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 00:12:16,619 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:16,630 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 10 transitions. Complement of second has 4 states. [2024-11-24 00:12:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 00:12:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-24 00:12:16,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-24 00:12:16,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:16,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2024-11-24 00:12:16,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:16,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2024-11-24 00:12:16,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 00:12:16,632 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-11-24 00:12:16,633 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-24 00:12:16,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2024-11-24 00:12:16,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-24 00:12:16,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-24 00:12:16,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-24 00:12:16,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 00:12:16,633 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:12:16,633 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:12:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-24 00:12:16,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:12:16,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:12:16,634 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:12:16,634 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-24 00:12:16,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-24 00:12:16,634 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-24 00:12:16,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 00:12:16,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-24 00:12:16,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-24 00:12:16,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-24 00:12:16,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 00:12:16,634 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:12:16,635 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:12:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:12:16,635 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:12:16,635 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-24 00:12:16,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-24 00:12:16,635 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-24 00:12:16,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-24 00:12:16,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 24.11 12:12:16 BoogieIcfgContainer [2024-11-24 00:12:16,648 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-24 00:12:16,649 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:12:16,649 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:12:16,649 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:12:16,651 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:12:13" (3/4) ... [2024-11-24 00:12:16,653 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 00:12:16,654 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:12:16,657 INFO L158 Benchmark]: Toolchain (without parser) took 4180.18ms. Allocated memory is still 142.6MB. Free memory was 117.8MB in the beginning and 54.2MB in the end (delta: 63.6MB). Peak memory consumption was 64.2MB. Max. memory is 16.1GB. [2024-11-24 00:12:16,657 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 74.7MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:12:16,658 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.55ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 107.8MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:12:16,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.38ms. Allocated memory is still 142.6MB. Free memory was 107.8MB in the beginning and 107.0MB in the end (delta: 798.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:12:16,658 INFO L158 Benchmark]: Boogie Preprocessor took 35.10ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 106.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:12:16,658 INFO L158 Benchmark]: RCFGBuilder took 225.39ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 97.8MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:12:16,659 INFO L158 Benchmark]: BuchiAutomizer took 3630.00ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 54.2MB in the end (delta: 43.5MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2024-11-24 00:12:16,659 INFO L158 Benchmark]: Witness Printer took 5.68ms. Allocated memory is still 142.6MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:12:16,661 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 74.7MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.55ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 107.8MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.38ms. Allocated memory is still 142.6MB. Free memory was 107.8MB in the beginning and 107.0MB in the end (delta: 798.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.10ms. Allocated memory is still 142.6MB. Free memory was 107.0MB in the beginning and 106.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 225.39ms. Allocated memory is still 142.6MB. Free memory was 106.0MB in the beginning and 97.8MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3630.00ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 54.2MB in the end (delta: 43.5MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * Witness Printer took 5.68ms. Allocated memory is still 142.6MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 27.1kB). 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function ((long) -1 * x) and consists of 4 locations. One deterministic module has affine ranking function ((long) -1 * x) and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 26 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf95 smp65 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 58ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-24 00:12:16,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-11-24 00:12:16,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 00:12:17,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-24 00:12:17,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:17,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:17,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb78566a-99f1-45a7-b305-694d0b88648e/bin/uautomizer-verify-LYvppIcaGC/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 Result: TRUE