./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-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_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/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_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/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_01640def-a691-4b9f-aa8f-69e79358cdf6/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 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:00:53,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:00:53,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-12-02 11:00:53,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:00:53,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:00:53,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:00:53,242 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:00:53,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:00:53,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:00:53,242 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:00:53,243 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:00:53,243 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:00:53,243 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:00:53,243 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-12-02 11:00:53,243 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-12-02 11:00:53,243 INFO L153 SettingsManager]: * Use old map elimination=false [2024-12-02 11:00:53,243 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-12-02 11:00:53,243 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-12-02 11:00:53,243 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-12-02 11:00:53,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:00:53,244 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:00:53,245 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:00:53,245 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:00:53,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:00:53,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-12-02 11:00:53,245 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-12-02 11:00:53,245 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_01640def-a691-4b9f-aa8f-69e79358cdf6/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 -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2024-12-02 11:00:53,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:00:53,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:00:53,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:00:53,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:00:53,495 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:00:53,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2024-12-02 11:00:56,285 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/data/dfe0b7694/e832954acc1b4b8fa6a2f9c281459e2c/FLAG0f55f4db7 [2024-12-02 11:00:56,491 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:00:56,492 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2024-12-02 11:00:56,498 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/data/dfe0b7694/e832954acc1b4b8fa6a2f9c281459e2c/FLAG0f55f4db7 [2024-12-02 11:00:56,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/data/dfe0b7694/e832954acc1b4b8fa6a2f9c281459e2c [2024-12-02 11:00:56,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:00:56,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:00:56,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:00:56,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:00:56,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:00:56,521 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ba42ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56, skipping insertion in model container [2024-12-02 11:00:56,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,532 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:00:56,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:00:56,640 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:00:56,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:00:56,659 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:00:56,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56 WrapperNode [2024-12-02 11:00:56,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:00:56,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:00:56,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:00:56,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:00:56,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,669 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,679 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-12-02 11:00:56,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:00:56,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:00:56,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:00:56,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:00:56,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,691 INFO L175 MemorySlicer]: No memory access in input program. [2024-12-02 11:00:56,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,693 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,694 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:00:56,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:00:56,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:00:56,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:00:56,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (1/1) ... [2024-12-02 11:00:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:56,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:56,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:56,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-12-02 11:00:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:00:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:00:56,814 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:00:56,815 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:00:56,868 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-12-02 11:00:56,868 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:00:56,876 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:00:56,876 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:00:56,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:56 BoogieIcfgContainer [2024-12-02 11:00:56,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:00:56,877 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-12-02 11:00:56,877 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-12-02 11:00:56,885 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-12-02 11:00:56,885 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 11:00:56,885 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 11:00:56" (1/3) ... [2024-12-02 11:00:56,887 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@797b378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 11:00:56, skipping insertion in model container [2024-12-02 11:00:56,887 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 11:00:56,887 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:56" (2/3) ... [2024-12-02 11:00:56,887 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@797b378c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 11:00:56, skipping insertion in model container [2024-12-02 11:00:56,887 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-12-02 11:00:56,887 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:56" (3/3) ... [2024-12-02 11:00:56,888 INFO L363 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2024-12-02 11:00:56,941 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-12-02 11:00:56,942 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-12-02 11:00:56,942 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-12-02 11:00:56,942 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-12-02 11:00:56,942 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-12-02 11:00:56,942 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-12-02 11:00:56,942 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-12-02 11:00:56,942 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-12-02 11:00:56,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 11:00:56,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-12-02 11:00:56,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 11:00:56,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 11:00:56,965 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-12-02 11:00:56,966 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-12-02 11:00:56,966 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-12-02 11:00:56,966 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 11:00:56,967 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-12-02 11:00:56,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 11:00:56,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 11:00:56,967 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-12-02 11:00:56,967 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-12-02 11:00:56,974 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" [2024-12-02 11:00:56,975 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);" "main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" [2024-12-02 11:00:56,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:56,980 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-12-02 11:00:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:56,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598168440] [2024-12-02 11:00:56,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:56,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:57,052 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:57,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:57,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1266379, now seen corresponding path program 1 times [2024-12-02 11:00:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:57,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278556419] [2024-12-02 11:00:57,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:57,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:57,082 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:57,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:57,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029100, now seen corresponding path program 1 times [2024-12-02 11:00:57,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:57,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853263376] [2024-12-02 11:00:57,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:57,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:57,098 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:57,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:57,196 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:00:57,197 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:00:57,197 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:00:57,197 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:00:57,197 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 11:00:57,197 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,197 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:00:57,198 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:00:57,198 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2024-12-02 11:00:57,198 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:00:57,198 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:00:57,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:57,224 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:57,234 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:57,320 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:00:57,320 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 11:00:57,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-12-02 11:00:57,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:57,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:57,354 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 11:00:57,354 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 11:00:57,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-12-02 11:00:57,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-12-02 11:00:57,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:57,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:57,390 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 11:00:57,390 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 11:00:57,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-12-02 11:00:57,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-12-02 11:00:57,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:57,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:57,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-12-02 11:00:57,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-12-02 11:00:57,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 11:00:57,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:57,583 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 11:00:57,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-12-02 11:00:57,587 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:00:57,587 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:00:57,587 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:00:57,587 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:00:57,587 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 11:00:57,587 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,587 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:00:57,587 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:00:57,587 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2024-12-02 11:00:57,587 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:00:57,587 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:00:57,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:57,593 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:57,596 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:57,655 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:00:57,659 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 11:00:57,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-12-02 11:00:57,666 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 11:00:57,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:57,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:57,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:57,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:57,689 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-12-02 11:00:57,689 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-12-02 11:00:57,696 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:57,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-12-02 11:00:57,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-12-02 11:00:57,719 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 11:00:57,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:57,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:57,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:57,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:57,736 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-12-02 11:00:57,736 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-12-02 11:00:57,746 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:57,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-12-02 11:00:57,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-12-02 11:00:57,759 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 11:00:57,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:57,771 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:00:57,771 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:57,771 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:57,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:57,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 11:00:57,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:00:57,777 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:57,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-12-02 11:00:57,786 INFO L451 LassoAnalysis]: Using template '2-nested'. [2024-12-02 11:00:57,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,788 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-12-02 11:00:57,791 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 11:00:57,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:57,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:57,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:57,807 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2024-12-02 11:00:57,811 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2024-12-02 11:00:57,811 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2024-12-02 11:00:57,822 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:57,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-12-02 11:00:57,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,832 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-12-02 11:00:57,834 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 11:00:57,846 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:57,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:57,846 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:57,846 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2024-12-02 11:00:57,850 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2024-12-02 11:00:57,850 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2024-12-02 11:00:57,858 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:57,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-12-02 11:00:57,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,866 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-12-02 11:00:57,879 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 11:00:57,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:57,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:00:57,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:57,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:57,894 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2024-12-02 11:00:57,896 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2024-12-02 11:00:57,896 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:00:57,900 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 11:00:57,909 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-12-02 11:00:57,912 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. [2024-12-02 11:00:57,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:57,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:57,916 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:57,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-12-02 11:00:57,918 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 11:00:57,919 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 11:00:57,919 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 11:00:57,919 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2024-12-02 11:00:57,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-12-02 11:00:57,930 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 11:00:57,937 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2024-12-02 11:00:57,938 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2024-12-02 11:00:57,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:57,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:00:57,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:57,993 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:00:57,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:58,291 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 11:00:58,316 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 11:00:58,318 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 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 11:00:58,398 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 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 36 states and 49 transitions. Complement of second has 8 states. [2024-12-02 11:00:58,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-12-02 11:00:58,404 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 11:00:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2024-12-02 11:00:58,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 4 letters. [2024-12-02 11:00:58,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:58,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 7 letters. Loop has 4 letters. [2024-12-02 11:00:58,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:58,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 8 letters. [2024-12-02 11:00:58,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:58,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 49 transitions. [2024-12-02 11:00:58,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-12-02 11:00:58,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 16 states and 20 transitions. [2024-12-02 11:00:58,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-12-02 11:00:58,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2024-12-02 11:00:58,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2024-12-02 11:00:58,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 11:00:58,421 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-12-02 11:00:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2024-12-02 11:00:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-12-02 11:00:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 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 11:00:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-12-02 11:00:58,447 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-12-02 11:00:58,447 INFO L425 stractBuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-12-02 11:00:58,447 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-12-02 11:00:58,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2024-12-02 11:00:58,448 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-12-02 11:00:58,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 11:00:58,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 11:00:58,448 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2024-12-02 11:00:58,448 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-12-02 11:00:58,448 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" [2024-12-02 11:00:58,449 INFO L749 eck$LassoCheckResult]: Loop: "main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" [2024-12-02 11:00:58,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash 889510735, now seen corresponding path program 1 times [2024-12-02 11:00:58,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:58,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238921992] [2024-12-02 11:00:58,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:58,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:58,455 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:58,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:58,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1757, now seen corresponding path program 1 times [2024-12-02 11:00:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750668726] [2024-12-02 11:00:58,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:58,465 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:58,468 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:58,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash 121325227, now seen corresponding path program 1 times [2024-12-02 11:00:58,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:58,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131642973] [2024-12-02 11:00:58,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:58,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:58,476 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:58,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:58,508 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:00:58,508 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:00:58,508 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:00:58,508 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:00:58,508 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 11:00:58,508 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,508 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:00:58,508 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:00:58,508 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2024-12-02 11:00:58,508 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:00:58,508 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:00:58,509 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:58,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:58,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:58,520 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:58,564 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:00:58,564 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 11:00:58,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,566 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-12-02 11:00:58,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:58,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:58,593 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 11:00:58,593 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 11:00:58,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-12-02 11:00:58,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,603 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-12-02 11:00:58,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:58,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:58,630 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 11:00:58,630 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 11:00:58,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-12-02 11:00:58,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,641 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-12-02 11:00:58,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:58,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:58,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-12-02 11:00:58,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,662 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-12-02 11:00:58,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 11:00:58,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:58,695 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 11:00:58,695 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=-7}, {ULTIMATE.start_main_~x~0#1=7}] Lambdas: [8, 2, 1] Nus: [1, 1] [2024-12-02 11:00:58,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-12-02 11:00:58,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,706 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-12-02 11:00:58,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:58,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:58,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-12-02 11:00:58,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-12-02 11:00:58,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 11:00:58,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:58,838 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 11:00:58,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-12-02 11:00:58,842 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:00:58,842 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:00:58,842 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:00:58,842 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:00:58,842 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 11:00:58,842 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,842 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:00:58,842 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:00:58,842 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2024-12-02 11:00:58,842 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:00:58,842 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:00:58,844 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:58,847 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:58,850 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:58,853 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:58,903 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:00:58,903 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 11:00:58,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,905 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-12-02 11:00:58,908 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 11:00:58,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:58,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:58,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:58,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:58,923 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-12-02 11:00:58,923 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-12-02 11:00:58,928 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:58,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-12-02 11:00:58,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,937 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-12-02 11:00:58,939 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 11:00:58,952 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:58,952 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:00:58,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:58,953 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:58,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:58,954 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 11:00:58,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:00:58,956 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:58,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-12-02 11:00:58,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:58,966 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:58,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-12-02 11:00:58,973 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 11:00:58,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:58,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:58,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:58,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:58,991 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-12-02 11:00:58,992 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-12-02 11:00:58,996 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:59,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-12-02 11:00:59,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,007 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-12-02 11:00:59,010 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 11:00:59,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:59,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:00:59,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:59,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:59,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:59,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 11:00:59,027 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:00:59,030 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 11:00:59,035 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-12-02 11:00:59,035 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-12-02 11:00:59,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,037 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-12-02 11:00:59,040 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 11:00:59,040 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 11:00:59,040 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 11:00:59,040 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2024-12-02 11:00:59,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-12-02 11:00:59,049 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 11:00:59,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:59,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:00:59,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:59,092 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:00:59,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:59,105 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 11:00:59,105 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 11:00:59,105 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:00:59,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-12-02 11:00:59,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-12-02 11:00:59,146 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 35 transitions. Complement of second has 6 states. [2024-12-02 11:00:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-12-02 11:00:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:00:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2024-12-02 11:00:59,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 2 letters. [2024-12-02 11:00:59,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:59,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 8 letters. Loop has 2 letters. [2024-12-02 11:00:59,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:59,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 6 letters. Loop has 4 letters. [2024-12-02 11:00:59,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:59,148 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 35 transitions. [2024-12-02 11:00:59,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-12-02 11:00:59,150 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 20 states and 26 transitions. [2024-12-02 11:00:59,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-12-02 11:00:59,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-12-02 11:00:59,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2024-12-02 11:00:59,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 11:00:59,150 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-12-02 11:00:59,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2024-12-02 11:00:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-12-02 11:00:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 18 states have internal predecessors, (25), 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 11:00:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-12-02 11:00:59,152 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-12-02 11:00:59,152 INFO L425 stractBuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-12-02 11:00:59,152 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-12-02 11:00:59,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 25 transitions. [2024-12-02 11:00:59,153 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-12-02 11:00:59,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 11:00:59,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 11:00:59,153 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:59,153 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-12-02 11:00:59,153 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" "main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);" [2024-12-02 11:00:59,153 INFO L749 eck$LassoCheckResult]: Loop: "main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);" [2024-12-02 11:00:59,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 121325229, now seen corresponding path program 1 times [2024-12-02 11:00:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:59,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616618016] [2024-12-02 11:00:59,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:59,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:59,161 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:59,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:59,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:59,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1798519, now seen corresponding path program 2 times [2024-12-02 11:00:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456205755] [2024-12-02 11:00:59,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:59,171 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:59,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:59,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash -709131741, now seen corresponding path program 1 times [2024-12-02 11:00:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130056404] [2024-12-02 11:00:59,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:59,184 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:00:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:59,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:00:59,227 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:00:59,228 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:00:59,228 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:00:59,228 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:00:59,228 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 11:00:59,228 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,228 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:00:59,228 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:00:59,228 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2024-12-02 11:00:59,228 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:00:59,228 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:00:59,229 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:59,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:59,246 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:59,292 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:00:59,292 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 11:00:59,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,294 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-12-02 11:00:59,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:59,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:59,315 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 11:00:59,315 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 11:00:59,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-12-02 11:00:59,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,322 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-12-02 11:00:59,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:00:59,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:59,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-12-02 11:00:59,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,343 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-12-02 11:00:59,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 11:00:59,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:00:59,496 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 11:00:59,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-12-02 11:00:59,500 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:00:59,500 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:00:59,500 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:00:59,500 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:00:59,500 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 11:00:59,500 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,500 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:00:59,500 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:00:59,500 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2024-12-02 11:00:59,501 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:00:59,501 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:00:59,502 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:59,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:59,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:00:59,557 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:00:59,557 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 11:00:59,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,559 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-12-02 11:00:59,562 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 11:00:59,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:59,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:00:59,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:59,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:59,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:59,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 11:00:59,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:00:59,577 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:59,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-12-02 11:00:59,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,585 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-12-02 11:00:59,587 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 11:00:59,598 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:59,598 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:59,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:59,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:59,600 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-12-02 11:00:59,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-12-02 11:00:59,604 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:59,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-12-02 11:00:59,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,613 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-12-02 11:00:59,616 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 11:00:59,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:59,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:59,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:59,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:00:59,628 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-12-02 11:00:59,628 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-12-02 11:00:59,631 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:00:59,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-12-02 11:00:59,637 INFO L451 LassoAnalysis]: Using template '2-nested'. [2024-12-02 11:00:59,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,639 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-12-02 11:00:59,641 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 11:00:59,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:00:59,652 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:00:59,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:00:59,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:00:59,652 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2024-12-02 11:00:59,655 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2024-12-02 11:00:59,655 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:00:59,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 11:00:59,668 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2024-12-02 11:00:59,669 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-12-02 11:00:59,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:00:59,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,671 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-12-02 11:00:59,673 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 11:00:59,673 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 11:00:59,673 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 11:00:59,673 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-12-02 11:00:59,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-12-02 11:00:59,683 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 11:00:59,684 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2024-12-02 11:00:59,685 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2024-12-02 11:00:59,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:59,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:00:59,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:59,729 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:00:59,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:59,924 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 11:00:59,925 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2024-12-02 11:00:59,925 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 11:00:59,976 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) Result 49 states and 63 transitions. Complement of second has 10 states. [2024-12-02 11:00:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-12-02 11:00:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 11:00:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2024-12-02 11:00:59,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2024-12-02 11:00:59,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:59,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2024-12-02 11:00:59,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:59,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 8 letters. Loop has 8 letters. [2024-12-02 11:00:59,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:00:59,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 63 transitions. [2024-12-02 11:00:59,981 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-12-02 11:00:59,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 34 states and 43 transitions. [2024-12-02 11:00:59,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2024-12-02 11:00:59,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2024-12-02 11:00:59,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 43 transitions. [2024-12-02 11:00:59,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 11:00:59,982 INFO L218 hiAutomatonCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-12-02 11:00:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 43 transitions. [2024-12-02 11:00:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-12-02 11:00:59,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 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 11:00:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2024-12-02 11:00:59,984 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-12-02 11:00:59,984 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 36 transitions. [2024-12-02 11:00:59,984 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-12-02 11:00:59,984 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 36 transitions. [2024-12-02 11:00:59,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-12-02 11:00:59,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 11:00:59,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 11:00:59,986 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:59,986 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-12-02 11:00:59,986 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);" "main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" "main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);" [2024-12-02 11:00:59,986 INFO L749 eck$LassoCheckResult]: Loop: "main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);" [2024-12-02 11:00:59,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:59,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1168902819, now seen corresponding path program 2 times [2024-12-02 11:00:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:00:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995853918] [2024-12-02 11:00:59,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:59,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:00:59,995 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:01:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:00,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:01:00,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:00,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1798519, now seen corresponding path program 3 times [2024-12-02 11:01:00,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:01:00,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695564144] [2024-12-02 11:01:00,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:00,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:00,006 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:01:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:00,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:01:00,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:00,009 INFO L85 PathProgramCache]: Analyzing trace with hash 631069465, now seen corresponding path program 3 times [2024-12-02 11:01:00,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:01:00,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267236695] [2024-12-02 11:01:00,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:00,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:00,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-12-02 11:01:00,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-12-02 11:01:00,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267236695] [2024-12-02 11:01:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267236695] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:01:00,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202017729] [2024-12-02 11:01:00,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:00,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:01:00,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:00,137 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:01:00,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 11:01:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:00,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:01:00,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:00,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:01:00,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202017729] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:01:00,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:01:00,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-12-02 11:01:00,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032938874] [2024-12-02 11:01:00,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:01:00,320 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:01:00,320 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:01:00,320 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:01:00,320 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:01:00,320 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 11:01:00,320 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,320 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:01:00,320 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:01:00,320 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2024-12-02 11:01:00,320 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:01:00,320 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:01:00,321 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:00,331 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:00,335 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:00,374 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:01:00,374 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 11:01:00,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:00,376 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:00,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-12-02 11:01:00,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:01:00,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:01:00,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-12-02 11:01:00,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:00,404 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:00,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-12-02 11:01:00,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 11:01:00,407 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:01:00,564 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 11:01:00,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2024-12-02 11:01:00,568 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:01:00,568 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:01:00,568 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:01:00,568 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:01:00,568 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 11:01:00,568 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,568 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:01:00,568 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:01:00,568 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2024-12-02 11:01:00,568 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:01:00,568 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:01:00,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:00,575 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:00,577 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:00,605 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:01:00,605 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 11:01:00,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:00,607 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:00,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-12-02 11:01:00,610 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 11:01:00,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:01:00,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:01:00,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:01:00,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:01:00,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:01:00,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 11:01:00,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:01:00,624 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:01:00,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-12-02 11:01:00,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:00,631 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:00,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-12-02 11:01:00,633 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 11:01:00,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:01:00,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:01:00,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:01:00,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:01:00,646 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-12-02 11:01:00,646 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-12-02 11:01:00,649 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:01:00,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2024-12-02 11:01:00,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:00,658 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:00,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-12-02 11:01:00,661 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 11:01:00,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:01:00,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:01:00,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:01:00,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:01:00,673 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-12-02 11:01:00,673 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-12-02 11:01:00,676 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-12-02 11:01:00,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-12-02 11:01:00,682 INFO L451 LassoAnalysis]: Using template '2-nested'. [2024-12-02 11:01:00,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:00,683 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:00,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-12-02 11:01:00,686 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 11:01:00,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:01:00,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:01:00,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:01:00,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:01:00,698 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2024-12-02 11:01:00,699 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2024-12-02 11:01:00,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:01:00,702 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 11:01:00,708 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2024-12-02 11:01:00,708 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-12-02 11:01:00,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:00,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:00,709 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:00,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-12-02 11:01:00,711 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 11:01:00,712 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 11:01:00,712 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 11:01:00,712 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~x~0#1 + 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2024-12-02 11:01:00,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2024-12-02 11:01:00,718 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 11:01:00,719 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2024-12-02 11:01:00,719 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2024-12-02 11:01:00,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:00,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:01:00,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:00,750 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:01:00,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:00,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-12-02 11:01:00,920 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 11:01:00,921 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2024-12-02 11:01:00,921 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 13 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 11:01:00,969 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 13. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) Result 44 states and 55 transitions. Complement of second has 9 states. [2024-12-02 11:01:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-12-02 11:01:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 11:01:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2024-12-02 11:01:00,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 12 letters. Loop has 4 letters. [2024-12-02 11:01:00,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:00,972 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-12-02 11:01:00,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:00,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:01:00,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:01,017 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:01:01,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,178 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 11:01:01,179 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2024-12-02 11:01:01,179 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 13 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 11:01:01,227 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 13. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) Result 43 states and 53 transitions. Complement of second has 9 states. [2024-12-02 11:01:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-12-02 11:01:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 11:01:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2024-12-02 11:01:01,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 12 letters. Loop has 4 letters. [2024-12-02 11:01:01,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:01,229 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-12-02 11:01:01,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:01,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:01:01,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:01,265 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:01:01,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,427 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 11:01:01,428 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 4 loop predicates [2024-12-02 11:01:01,428 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 13 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 11:01:01,466 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 36 transitions. cyclomatic complexity: 13. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) Result 56 states and 73 transitions. Complement of second has 11 states. [2024-12-02 11:01:01,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-12-02 11:01:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 11:01:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2024-12-02 11:01:01,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 12 letters. Loop has 4 letters. [2024-12-02 11:01:01,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:01,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 16 letters. Loop has 4 letters. [2024-12-02 11:01:01,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:01,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 12 letters. Loop has 8 letters. [2024-12-02 11:01:01,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:01,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 73 transitions. [2024-12-02 11:01:01,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-12-02 11:01:01,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 36 states and 45 transitions. [2024-12-02 11:01:01,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2024-12-02 11:01:01,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2024-12-02 11:01:01,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 45 transitions. [2024-12-02 11:01:01,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 11:01:01,471 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-12-02 11:01:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 45 transitions. [2024-12-02 11:01:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2024-12-02 11:01:01,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 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 11:01:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2024-12-02 11:01:01,472 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 28 transitions. [2024-12-02 11:01:01,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-12-02 11:01:01,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 11:01:01,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:01:01,474 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 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 11:01:01,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:01:01,559 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-12-02 11:01:01,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 40 transitions. [2024-12-02 11:01:01,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-12-02 11:01:01,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 33 states and 40 transitions. [2024-12-02 11:01:01,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2024-12-02 11:01:01,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2024-12-02 11:01:01,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 40 transitions. [2024-12-02 11:01:01,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 11:01:01,561 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-12-02 11:01:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 40 transitions. [2024-12-02 11:01:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-12-02 11:01:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 28 states have internal predecessors, (36), 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 11:01:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-12-02 11:01:01,562 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-12-02 11:01:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:01:01,563 INFO L425 stractBuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-12-02 11:01:01,563 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-12-02 11:01:01,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 36 transitions. [2024-12-02 11:01:01,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-12-02 11:01:01,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 11:01:01,564 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 11:01:01,564 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-12-02 11:01:01,564 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-12-02 11:01:01,564 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" "main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);" "main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" [2024-12-02 11:01:01,564 INFO L749 eck$LassoCheckResult]: Loop: "main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" [2024-12-02 11:01:01,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -709131743, now seen corresponding path program 4 times [2024-12-02 11:01:01,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:01:01,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986079812] [2024-12-02 11:01:01,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:01,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:01,571 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:01:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:01,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:01:01,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1757, now seen corresponding path program 2 times [2024-12-02 11:01:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:01:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634274275] [2024-12-02 11:01:01,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:01,579 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:01:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:01,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:01:01,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1424195837, now seen corresponding path program 5 times [2024-12-02 11:01:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:01:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530263013] [2024-12-02 11:01:01,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:01,587 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:01:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:01,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:01:01,612 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:01:01,613 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:01:01,613 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:01:01,613 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:01:01,613 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 11:01:01,613 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:01,613 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:01:01,613 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:01:01,613 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2024-12-02 11:01:01,613 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:01:01,613 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:01:01,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:01,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:01,624 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:01,626 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:01,664 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:01:01,664 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 11:01:01,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:01,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:01,666 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:01,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-12-02 11:01:01,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:01:01,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:01:01,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2024-12-02 11:01:01,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:01,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:01,692 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:01,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-12-02 11:01:01,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 11:01:01,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:01:01,792 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 11:01:01,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-12-02 11:01:01,795 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:01:01,795 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:01:01,795 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:01:01,795 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:01:01,795 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 11:01:01,795 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:01,795 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:01:01,795 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:01:01,795 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2024-12-02 11:01:01,795 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:01:01,795 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:01:01,796 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:01,801 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:01,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:01,806 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:01,834 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:01:01,834 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 11:01:01,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:01,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:01,836 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:01,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-12-02 11:01:01,838 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 11:01:01,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:01:01,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:01:01,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:01:01,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:01:01,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:01:01,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 11:01:01,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:01:01,852 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 11:01:01,855 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-12-02 11:01:01,855 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-12-02 11:01:01,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:01,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:01,857 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:01,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-12-02 11:01:01,862 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 11:01:01,862 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 11:01:01,862 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 11:01:01,862 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2024-12-02 11:01:01,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2024-12-02 11:01:01,868 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 11:01:01,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:01,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:01:01,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:01,898 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:01:01,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,906 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 11:01:01,906 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 11:01:01,906 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 36 transitions. cyclomatic complexity: 12 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 11:01:01,922 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 36 transitions. cyclomatic complexity: 12. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Result 37 states and 46 transitions. Complement of second has 5 states. [2024-12-02 11:01:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-12-02 11:01:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 11:01:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2024-12-02 11:01:01,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 12 letters. Loop has 2 letters. [2024-12-02 11:01:01,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:01,924 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-12-02 11:01:01,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:01,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:01:01,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:01,957 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:01:01,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,965 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 11:01:01,966 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 11:01:01,966 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 36 transitions. cyclomatic complexity: 12 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 11:01:01,984 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 36 transitions. cyclomatic complexity: 12. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Result 37 states and 46 transitions. Complement of second has 5 states. [2024-12-02 11:01:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-12-02 11:01:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 11:01:01,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2024-12-02 11:01:01,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 12 letters. Loop has 2 letters. [2024-12-02 11:01:01,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:01,986 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-12-02 11:01:01,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:02,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:01:02,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:02,021 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:01:02,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:02,029 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 11:01:02,029 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 11:01:02,030 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 36 transitions. cyclomatic complexity: 12 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 11:01:02,045 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 36 transitions. cyclomatic complexity: 12. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) Result 38 states and 49 transitions. Complement of second has 4 states. [2024-12-02 11:01:02,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-12-02 11:01:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 11:01:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2024-12-02 11:01:02,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 12 letters. Loop has 2 letters. [2024-12-02 11:01:02,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:02,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 14 letters. Loop has 2 letters. [2024-12-02 11:01:02,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:02,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 12 letters. Loop has 4 letters. [2024-12-02 11:01:02,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:02,047 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 49 transitions. [2024-12-02 11:01:02,047 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-12-02 11:01:02,048 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 32 states and 40 transitions. [2024-12-02 11:01:02,048 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-12-02 11:01:02,048 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2024-12-02 11:01:02,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 40 transitions. [2024-12-02 11:01:02,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-12-02 11:01:02,048 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 40 transitions. [2024-12-02 11:01:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 40 transitions. [2024-12-02 11:01:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2024-12-02 11:01:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 states have internal predecessors, (35), 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 11:01:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-12-02 11:01:02,050 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-12-02 11:01:02,051 INFO L425 stractBuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-12-02 11:01:02,051 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-12-02 11:01:02,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2024-12-02 11:01:02,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-12-02 11:01:02,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-12-02 11:01:02,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-12-02 11:01:02,051 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:01:02,051 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-12-02 11:01:02,052 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);" "main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" "main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" [2024-12-02 11:01:02,052 INFO L749 eck$LassoCheckResult]: Loop: "assume !(main_~y~0#1 < main_~z~0#1);" "main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;" "main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;" "main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" [2024-12-02 11:01:02,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1901956108, now seen corresponding path program 6 times [2024-12-02 11:01:02,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:01:02,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271716598] [2024-12-02 11:01:02,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:02,056 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:01:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:02,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:01:02,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1573099055, now seen corresponding path program 1 times [2024-12-02 11:01:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:01:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988902433] [2024-12-02 11:01:02,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:02,065 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:01:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:02,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:01:02,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1911683102, now seen corresponding path program 7 times [2024-12-02 11:01:02,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-12-02 11:01:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057538305] [2024-12-02 11:01:02,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:02,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:02,073 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 11:01:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 11:01:02,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-12-02 11:01:02,116 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:01:02,116 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:01:02,116 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:01:02,116 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:01:02,116 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-12-02 11:01:02,116 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:02,116 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:01:02,116 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:01:02,116 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2024-12-02 11:01:02,116 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:01:02,116 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:01:02,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:02,119 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:02,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:02,178 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:01:02,178 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-12-02 11:01:02,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:02,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:02,181 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:02,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-12-02 11:01:02,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:01:02,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:01:02,202 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 11:01:02,202 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 11:01:02,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2024-12-02 11:01:02,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:02,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:02,210 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:02,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-12-02 11:01:02,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:01:02,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:01:02,230 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-12-02 11:01:02,230 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-12-02 11:01:02,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2024-12-02 11:01:02,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:02,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:02,238 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:02,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-12-02 11:01:02,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-12-02 11:01:02,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:01:02,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2024-12-02 11:01:02,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:02,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:02,259 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:02,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-12-02 11:01:02,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-12-02 11:01:02,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-12-02 11:01:02,408 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-12-02 11:01:02,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2024-12-02 11:01:02,413 INFO L204 LassoAnalysis]: Preferences: [2024-12-02 11:01:02,413 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-12-02 11:01:02,413 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-12-02 11:01:02,413 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-12-02 11:01:02,413 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-12-02 11:01:02,413 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:02,413 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-12-02 11:01:02,413 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-12-02 11:01:02,413 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2024-12-02 11:01:02,413 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-12-02 11:01:02,413 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-12-02 11:01:02,414 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:02,424 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:02,426 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-12-02 11:01:02,459 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-12-02 11:01:02,460 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-12-02 11:01:02,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:02,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:02,461 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:02,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2024-12-02 11:01:02,466 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 11:01:02,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2024-12-02 11:01:02,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-12-02 11:01:02,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-12-02 11:01:02,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-12-02 11:01:02,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-12-02 11:01:02,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-12-02 11:01:02,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-12-02 11:01:02,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-12-02 11:01:02,482 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-12-02 11:01:02,484 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-12-02 11:01:02,484 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-12-02 11:01:02,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-12-02 11:01:02,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:02,486 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-12-02 11:01:02,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2024-12-02 11:01:02,488 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-12-02 11:01:02,488 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-12-02 11:01:02,488 INFO L474 LassoAnalysis]: Proved termination. [2024-12-02 11:01:02,488 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2024-12-02 11:01:02,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2024-12-02 11:01:02,494 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-12-02 11:01:02,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:02,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:01:02,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:02,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 11:01:02,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:01:02,545 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 11:01:02,545 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 11 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 11:01:02,589 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 11. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 58 states and 76 transitions. Complement of second has 8 states. [2024-12-02 11:01:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-12-02 11:01:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 11:01:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2024-12-02 11:01:02,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 11 letters. Loop has 6 letters. [2024-12-02 11:01:02,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:02,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 17 letters. Loop has 6 letters. [2024-12-02 11:01:02,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:02,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 11 letters. Loop has 12 letters. [2024-12-02 11:01:02,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-12-02 11:01:02,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 76 transitions. [2024-12-02 11:01:02,592 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-12-02 11:01:02,592 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 0 states and 0 transitions. [2024-12-02 11:01:02,592 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-12-02 11:01:02,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-12-02 11:01:02,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-12-02 11:01:02,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-12-02 11:01:02,592 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 11:01:02,592 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 11:01:02,592 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 11:01:02,592 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-12-02 11:01:02,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-12-02 11:01:02,593 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-12-02 11:01:02,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-12-02 11:01:02,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 11:01:02 BoogieIcfgContainer [2024-12-02 11:01:02,601 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-12-02 11:01:02,602 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 11:01:02,602 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 11:01:02,602 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 11:01:02,603 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:56" (3/4) ... [2024-12-02 11:01:02,605 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 11:01:02,605 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 11:01:02,606 INFO L158 Benchmark]: Toolchain (without parser) took 6091.53ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 78.9MB in the end (delta: 13.6MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-12-02 11:01:02,607 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory was 72.0MB in the beginning and 71.9MB in the end (delta: 86.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:01:02,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.52ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 82.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 11:01:02,607 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.26ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:01:02,607 INFO L158 Benchmark]: Boogie Preprocessor took 19.90ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.4MB in the end (delta: 992.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:01:02,608 INFO L158 Benchmark]: RCFGBuilder took 175.53ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 72.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 11:01:02,608 INFO L158 Benchmark]: BuchiAutomizer took 5724.03ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 78.9MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:01:02,608 INFO L158 Benchmark]: Witness Printer took 3.90ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 78.9MB in the end (delta: 21.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:01:02,610 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 was 72.0MB in the beginning and 71.9MB in the end (delta: 86.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.52ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 82.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.26ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.90ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.4MB in the end (delta: 992.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 175.53ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 72.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5724.03ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 78.9MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.90ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 78.9MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function null, null and consists of 5 locations. One deterministic module has affine ranking function (((long) -1 * y) + z) and consists of 4 locations. One deterministic module has 2-nested ranking function null, null and consists of 6 locations. One deterministic module has affine ranking function z and consists of 5 locations. One nondeterministic module has 2-nested ranking function null, null and consists of 6 locations. One nondeterministic module has affine ranking function (((long) -1 * y) + z) and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.6s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 6 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 [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 115 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 92 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax164 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 35ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s 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 11:01:02,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2024-12-02 11:01:02,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 11:01:03,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01640def-a691-4b9f-aa8f-69e79358cdf6/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