./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f57a241e2c58801cabb7fcf6419a1ee8415c4d2687e9efe6a7f86e17b88f5ca --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:16:09,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:16:09,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-12-02 10:16:09,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:16:09,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:16:09,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:16:09,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:16:09,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:16:09,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:16:09,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:16:09,711 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:16:09,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:16:09,711 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:16:09,711 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * Use old map elimination=false [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-12-02 10:16:09,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-12-02 10:16:09,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-12-02 10:16:09,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-12-02 10:16:09,713 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:16:09,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:16:09,713 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-12-02 10:16:09,713 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:16:09,713 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:16:09,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:16:09,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:16:09,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:16:09,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-12-02 10:16:09,714 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-12-02 10:16:09,714 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_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f57a241e2c58801cabb7fcf6419a1ee8415c4d2687e9efe6a7f86e17b88f5ca [2024-12-02 10:16:09,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:16:09,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:16:09,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:16:09,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:16:09,956 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:16:09,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2024-12-02 10:16:12,647 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/data/f50640d3d/0ce4875ff3c24a8f8c2a30a301967dcb/FLAG679ba956b [2024-12-02 10:16:12,818 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:16:12,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2024-12-02 10:16:12,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/data/f50640d3d/0ce4875ff3c24a8f8c2a30a301967dcb/FLAG679ba956b [2024-12-02 10:16:12,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/data/f50640d3d/0ce4875ff3c24a8f8c2a30a301967dcb [2024-12-02 10:16:12,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:16:12,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:16:12,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:16:12,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:16:12,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:16:12,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:16:12" (1/1) ... [2024-12-02 10:16:12,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a3c451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:12, skipping insertion in model container [2024-12-02 10:16:12,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:16:12" (1/1) ... [2024-12-02 10:16:12,863 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:16:12,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:16:13,000 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:16:13,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:16:13,025 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:16:13,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13 WrapperNode [2024-12-02 10:16:13,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:16:13,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:16:13,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:16:13,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:16:13,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,052 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-12-02 10:16:13,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:16:13,053 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:16:13,053 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:16:13,053 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:16:13,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,062 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,067 INFO L175 MemorySlicer]: No memory access in input program. [2024-12-02 10:16:13,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,069 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:16:13,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:16:13,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:16:13,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:16:13,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (1/1) ... [2024-12-02 10:16:13,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:13,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:13,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:13,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-12-02 10:16:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:16:13,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:16:13,193 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:16:13,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:16:13,280 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-12-02 10:16:13,280 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:16:13,289 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:16:13,289 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 10:16:13,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:16:13 BoogieIcfgContainer [2024-12-02 10:16:13,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:16:13,290 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-12-02 10:16:13,290 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-12-02 10:16:13,296 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-12-02 10:16:13,297 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 10:16:13,297 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 10:16:12" (1/3) ... [2024-12-02 10:16:13,298 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50981b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 10:16:13, skipping insertion in model container [2024-12-02 10:16:13,298 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 10:16:13,298 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:13" (2/3) ... [2024-12-02 10:16:13,298 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50981b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 10:16:13, skipping insertion in model container [2024-12-02 10:16:13,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 10:16:13,299 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:16:13" (3/3) ... [2024-12-02 10:16:13,300 INFO L363 chiAutomizerObserver]: Analyzing ICFG KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2024-12-02 10:16:13,349 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-12-02 10:16:13,349 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-12-02 10:16:13,349 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-12-02 10:16:13,349 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-12-02 10:16:13,349 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-12-02 10:16:13,349 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-12-02 10:16:13,349 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-12-02 10:16:13,350 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-12-02 10:16:13,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:13,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-12-02 10:16:13,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 10:16:13,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 10:16:13,373 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-12-02 10:16:13,373 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-12-02 10:16:13,373 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-12-02 10:16:13,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:13,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-12-02 10:16:13,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 10:16:13,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 10:16:13,375 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-12-02 10:16:13,375 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-12-02 10:16:13,381 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0;" [2024-12-02 10:16:13,382 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 < 255;" "assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1;" "assume 0 != main_~debug~0#1;main_~x~0#1 := 0;" [2024-12-02 10:16:13,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:13,387 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-12-02 10:16:13,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:13,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190612263] [2024-12-02 10:16:13,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,449 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:13,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash 37995, now seen corresponding path program 1 times [2024-12-02 10:16:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:13,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016905639] [2024-12-02 10:16:13,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,485 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:13,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash 28696937, now seen corresponding path program 1 times [2024-12-02 10:16:13,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:13,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947994774] [2024-12-02 10:16:13,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:13,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:13,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-12-02 10:16:13,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947994774] [2024-12-02 10:16:13,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947994774] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:16:13,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281575152] [2024-12-02 10:16:13,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:13,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:16:13,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:13,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:16:13,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:16:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:13,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:16:13,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:13,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:16:13,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281575152] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:16:13,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:16:13,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 10:16:13,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945073939] [2024-12-02 10:16:13,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:16:13,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-12-02 10:16:13,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:13,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:13,714 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:13,723 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2024-12-02 10:16:13,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-12-02 10:16:13,724 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-12-02 10:16:13,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2024-12-02 10:16:13,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-12-02 10:16:13,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-12-02 10:16:13,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2024-12-02 10:16:13,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-12-02 10:16:13,731 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5 states and 6 transitions. [2024-12-02 10:16:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2024-12-02 10:16:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2024-12-02 10:16:13,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) 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) [2024-12-02 10:16:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2024-12-02 10:16:13,752 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5 states and 6 transitions. [2024-12-02 10:16:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:13,756 INFO L425 stractBuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2024-12-02 10:16:13,756 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-12-02 10:16:13,756 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2024-12-02 10:16:13,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-12-02 10:16:13,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 10:16:13,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 10:16:13,757 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-12-02 10:16:13,757 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-12-02 10:16:13,757 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0;" [2024-12-02 10:16:13,757 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 < 255;" "assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1;" "assume !(0 != main_~debug~0#1);" [2024-12-02 10:16:13,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-12-02 10:16:13,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:13,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975487589] [2024-12-02 10:16:13,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:13,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,761 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:13,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 37997, now seen corresponding path program 1 times [2024-12-02 10:16:13,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:13,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271741039] [2024-12-02 10:16:13,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:13,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,772 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:13,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:13,778 INFO L85 PathProgramCache]: Analyzing trace with hash 28696939, now seen corresponding path program 1 times [2024-12-02 10:16:13,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:13,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2431353] [2024-12-02 10:16:13,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:13,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,784 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:13,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:13,837 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 10:16:13,838 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 10:16:13,838 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 10:16:13,838 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 10:16:13,838 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 10:16:13,838 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:13,838 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 10:16:13,839 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 10:16:13,839 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration2_Loop [2024-12-02 10:16:13,839 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 10:16:13,839 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 10:16:13,851 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:13,859 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:13,958 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 10:16:13,959 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 10:16:13,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:13,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:13,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:13,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-12-02 10:16:13,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 10:16:13,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 10:16:13,981 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 10:16:13,981 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~debug~0#1=0} Honda state: {ULTIMATE.start_main_~debug~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 10:16:13,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-12-02 10:16:13,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:13,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:13,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:13,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-12-02 10:16:13,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 10:16:13,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 10:16:14,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-12-02 10:16:14,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-12-02 10:16:14,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 10:16:14,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 10:16:14,048 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 10:16:14,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-12-02 10:16:14,051 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 10:16:14,051 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 10:16:14,051 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 10:16:14,051 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 10:16:14,051 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 10:16:14,051 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,051 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 10:16:14,051 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 10:16:14,051 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration2_Loop [2024-12-02 10:16:14,051 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 10:16:14,051 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 10:16:14,053 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:14,055 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:14,130 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 10:16:14,134 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 10:16:14,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-12-02 10:16:14,140 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 [2024-12-02 10:16:14,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 10:16:14,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 10:16:14,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 10:16:14,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 10:16:14,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 10:16:14,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 10:16:14,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 10:16:14,163 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 10:16:14,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-12-02 10:16:14,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-12-02 10:16:14,176 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 [2024-12-02 10:16:14,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 10:16:14,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 10:16:14,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 10:16:14,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 10:16:14,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 10:16:14,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 10:16:14,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 10:16:14,194 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 10:16:14,197 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-12-02 10:16:14,200 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-12-02 10:16:14,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,203 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-12-02 10:16:14,205 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 10:16:14,206 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 10:16:14,206 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 10:16:14,206 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-12-02 10:16:14,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-12-02 10:16:14,218 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 10:16:14,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:14,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:16:14,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:14,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:16:14,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:14,302 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-12-02 10:16:14,303 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:14,342 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 15 transitions. Complement of second has 7 states. [2024-12-02 10:16:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-12-02 10:16:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:14,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2024-12-02 10:16:14,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2024-12-02 10:16:14,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:14,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2024-12-02 10:16:14,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:14,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2024-12-02 10:16:14,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:14,349 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2024-12-02 10:16:14,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-12-02 10:16:14,351 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 15 transitions. [2024-12-02 10:16:14,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-12-02 10:16:14,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-12-02 10:16:14,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2024-12-02 10:16:14,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 10:16:14,352 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-12-02 10:16:14,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2024-12-02 10:16:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2024-12-02 10:16:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-12-02 10:16:14,354 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-12-02 10:16:14,354 INFO L425 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-12-02 10:16:14,354 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-12-02 10:16:14,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2024-12-02 10:16:14,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-12-02 10:16:14,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 10:16:14,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 10:16:14,355 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-12-02 10:16:14,355 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-12-02 10:16:14,355 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0;" "assume main_~x~0#1 < 255;" "assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1;" [2024-12-02 10:16:14,355 INFO L749 eck$LassoCheckResult]: Loop: "assume !(0 != main_~debug~0#1);" "assume main_~x~0#1 < 255;" "assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1;" [2024-12-02 10:16:14,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash 925705, now seen corresponding path program 1 times [2024-12-02 10:16:14,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:14,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005954992] [2024-12-02 10:16:14,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:14,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:14,362 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:14,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:14,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash 51197, now seen corresponding path program 2 times [2024-12-02 10:16:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536864174] [2024-12-02 10:16:14,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:14,375 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:14,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:14,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:14,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1807895285, now seen corresponding path program 1 times [2024-12-02 10:16:14,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:14,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560861550] [2024-12-02 10:16:14,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:14,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:14,393 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:14,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:14,434 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 10:16:14,434 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 10:16:14,434 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 10:16:14,434 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 10:16:14,434 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 10:16:14,435 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,435 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 10:16:14,435 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 10:16:14,435 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration3_Loop [2024-12-02 10:16:14,435 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 10:16:14,435 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 10:16:14,436 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:14,438 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:14,511 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 10:16:14,511 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 10:16:14,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-12-02 10:16:14,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 10:16:14,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 10:16:14,532 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 10:16:14,532 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~debug~0#1=0} Honda state: {ULTIMATE.start_main_~debug~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 10:16:14,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-12-02 10:16:14,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,542 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-12-02 10:16:14,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 10:16:14,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 10:16:14,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-12-02 10:16:14,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,567 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-12-02 10:16:14,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 10:16:14,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 10:16:14,601 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 10:16:14,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-12-02 10:16:14,605 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 10:16:14,605 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 10:16:14,605 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 10:16:14,605 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 10:16:14,605 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 10:16:14,605 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,605 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 10:16:14,605 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 10:16:14,605 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration3_Loop [2024-12-02 10:16:14,605 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 10:16:14,605 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 10:16:14,606 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:14,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:14,678 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 10:16:14,678 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 10:16:14,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,680 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-12-02 10:16:14,682 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 [2024-12-02 10:16:14,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 10:16:14,693 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 10:16:14,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 10:16:14,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 10:16:14,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 10:16:14,694 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 10:16:14,694 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 10:16:14,696 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 10:16:14,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-12-02 10:16:14,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,706 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-12-02 10:16:14,708 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 [2024-12-02 10:16:14,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 10:16:14,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 10:16:14,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 10:16:14,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 10:16:14,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 10:16:14,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 10:16:14,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 10:16:14,725 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 10:16:14,727 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-12-02 10:16:14,728 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-12-02 10:16:14,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:14,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:14,730 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:14,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-12-02 10:16:14,732 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 10:16:14,732 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 10:16:14,732 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 10:16:14,732 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-12-02 10:16:14,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-12-02 10:16:14,741 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 10:16:14,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:14,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:16:14,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:14,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:16:14,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:14,791 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 [2024-12-02 10:16:14,792 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 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) [2024-12-02 10:16:14,812 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. 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) Result 17 states and 22 transitions. Complement of second has 7 states. [2024-12-02 10:16:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-12-02 10:16:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2024-12-02 10:16:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-12-02 10:16:14,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2024-12-02 10:16:14,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:14,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2024-12-02 10:16:14,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:14,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2024-12-02 10:16:14,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:14,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2024-12-02 10:16:14,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-12-02 10:16:14,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2024-12-02 10:16:14,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-12-02 10:16:14,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-12-02 10:16:14,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2024-12-02 10:16:14,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 10:16:14,817 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-12-02 10:16:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2024-12-02 10:16:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-12-02 10:16:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-12-02 10:16:14,818 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-12-02 10:16:14,819 INFO L425 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-12-02 10:16:14,819 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-12-02 10:16:14,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2024-12-02 10:16:14,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-12-02 10:16:14,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 10:16:14,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 10:16:14,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2024-12-02 10:16:14,819 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-12-02 10:16:14,820 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0;" "assume main_~x~0#1 < 255;" "assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1;" "assume !(0 != main_~debug~0#1);" "assume main_~x~0#1 < 255;" "assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1;" [2024-12-02 10:16:14,820 INFO L749 eck$LassoCheckResult]: Loop: "assume !(0 != main_~debug~0#1);" "assume main_~x~0#1 < 255;" "assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1;" [2024-12-02 10:16:14,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1807895283, now seen corresponding path program 1 times [2024-12-02 10:16:14,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:14,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809385873] [2024-12-02 10:16:14,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:14,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:15,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-12-02 10:16:15,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-12-02 10:16:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-12-02 10:16:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809385873] [2024-12-02 10:16:15,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809385873] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:16:15,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460838977] [2024-12-02 10:16:15,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:15,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:16:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:15,041 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:16:15,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 10:16:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:15,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:16:15,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:15,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:16:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460838977] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:16:15,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:16:15,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 10:16:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911233928] [2024-12-02 10:16:15,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:16:15,104 INFO L752 eck$LassoCheckResult]: stem already infeasible [2024-12-02 10:16:15,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 51197, now seen corresponding path program 3 times [2024-12-02 10:16:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 10:16:15,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433996065] [2024-12-02 10:16:15,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:15,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:15,109 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:16:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:16:15,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 10:16:15,142 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 10:16:15,142 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 10:16:15,142 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 10:16:15,142 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 10:16:15,142 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 10:16:15,142 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:15,142 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 10:16:15,143 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 10:16:15,143 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration4_Loop [2024-12-02 10:16:15,143 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 10:16:15,143 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 10:16:15,143 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:15,150 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:15,211 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 10:16:15,211 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 10:16:15,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:15,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:15,213 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:15,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-12-02 10:16:15,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 10:16:15,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 10:16:15,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-12-02 10:16:15,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:15,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:15,238 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:15,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-12-02 10:16:15,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 10:16:15,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 10:16:15,272 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 10:16:15,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-12-02 10:16:15,275 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 10:16:15,275 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 10:16:15,275 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 10:16:15,275 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 10:16:15,275 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 10:16:15,275 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:15,275 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 10:16:15,275 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 10:16:15,276 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration4_Loop [2024-12-02 10:16:15,276 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 10:16:15,276 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 10:16:15,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:15,284 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 10:16:15,344 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 10:16:15,344 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 10:16:15,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:15,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:15,346 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:15,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-12-02 10:16:15,349 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 [2024-12-02 10:16:15,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 10:16:15,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 10:16:15,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 10:16:15,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 10:16:15,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 10:16:15,365 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 10:16:15,365 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 10:16:15,368 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 10:16:15,371 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-12-02 10:16:15,371 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-12-02 10:16:15,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 10:16:15,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:15,373 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:15,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-12-02 10:16:15,376 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 10:16:15,376 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 10:16:15,376 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 10:16:15,376 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-12-02 10:16:15,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-12-02 10:16:15,385 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 10:16:15,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:15,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:16:15,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:15,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:16:15,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:15,446 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 [2024-12-02 10:16:15,446 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-12-02 10:16:15,465 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 21 states and 28 transitions. Complement of second has 7 states. [2024-12-02 10:16:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-12-02 10:16:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-12-02 10:16:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-12-02 10:16:15,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2024-12-02 10:16:15,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:15,467 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-12-02 10:16:15,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:15,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:16:15,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:15,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:16:15,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:15,512 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 [2024-12-02 10:16:15,513 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-12-02 10:16:15,534 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 21 states and 28 transitions. Complement of second has 7 states. [2024-12-02 10:16:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-12-02 10:16:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-12-02 10:16:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-12-02 10:16:15,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2024-12-02 10:16:15,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:15,536 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-12-02 10:16:15,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:15,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:16:15,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:15,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:16:15,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:15,582 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 [2024-12-02 10:16:15,583 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-12-02 10:16:15,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 24 states and 32 transitions. Complement of second has 6 states. [2024-12-02 10:16:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-12-02 10:16:15,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-12-02 10:16:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2024-12-02 10:16:15,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2024-12-02 10:16:15,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:15,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2024-12-02 10:16:15,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:15,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2024-12-02 10:16:15,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 10:16:15,607 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 32 transitions. [2024-12-02 10:16:15,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-12-02 10:16:15,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 26 transitions. [2024-12-02 10:16:15,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-12-02 10:16:15,610 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-12-02 10:16:15,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2024-12-02 10:16:15,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 10:16:15,610 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-12-02 10:16:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2024-12-02 10:16:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 9. [2024-12-02 10:16:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2024-12-02 10:16:15,611 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-12-02 10:16:15,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-12-02 10:16:15,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:15,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:15,612 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2024-12-02 10:16:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:15,619 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2024-12-02 10:16:15,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2024-12-02 10:16:15,620 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-12-02 10:16:15,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2024-12-02 10:16:15,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-12-02 10:16:15,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-12-02 10:16:15,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-12-02 10:16:15,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-12-02 10:16:15,620 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 10:16:15,620 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 10:16:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:15,621 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 10:16:15,621 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-12-02 10:16:15,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-12-02 10:16:15,621 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-12-02 10:16:15,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-12-02 10:16:15,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 10:16:15 BoogieIcfgContainer [2024-12-02 10:16:15,630 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-12-02 10:16:15,630 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 10:16:15,630 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 10:16:15,630 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 10:16:15,631 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:16:13" (3/4) ... [2024-12-02 10:16:15,633 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 10:16:15,634 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 10:16:15,635 INFO L158 Benchmark]: Toolchain (without parser) took 2791.79ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 53.2MB in the end (delta: 39.6MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2024-12-02 10:16:15,635 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:16:15,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.03ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 82.9MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:16:15,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.70ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 81.9MB in the end (delta: 805.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:16:15,636 INFO L158 Benchmark]: Boogie Preprocessor took 22.72ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 81.0MB in the end (delta: 815.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:16:15,636 INFO L158 Benchmark]: RCFGBuilder took 213.10ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 72.3MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:16:15,636 INFO L158 Benchmark]: BuchiAutomizer took 2339.41ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 53.2MB in the end (delta: 19.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-12-02 10:16:15,637 INFO L158 Benchmark]: Witness Printer took 3.83ms. Allocated memory is still 117.4MB. Free memory was 53.2MB in the beginning and 53.2MB in the end (delta: 21.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:16:15,639 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.03ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 82.9MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.70ms. Allocated memory is still 117.4MB. Free memory was 82.7MB in the beginning and 81.9MB in the end (delta: 805.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.72ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 81.0MB in the end (delta: 815.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 213.10ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 72.3MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2339.41ms. Allocated memory is still 117.4MB. Free memory was 72.3MB in the beginning and 53.2MB in the end (delta: 19.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.83ms. Allocated memory is still 117.4MB. Free memory was 53.2MB in the beginning and 53.2MB in the end (delta: 21.1kB). 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. One deterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. One nondeterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 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 [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 46 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp83 ukn100 mio100 lsp100 div346 bol100 ite100 ukn100 eq150 hnf94 smp47 dnf100 smp100 tf105 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-12-02 10:16:15,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-12-02 10:16:15,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 10:16:16,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:16:16,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d437505e-f6dd-420a-9ba4-c0e85e8c5ff1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE