./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0d6528b7cc69fe4ab1ae178e84639571fa28bd084493b226ea467e9ac1e22d5f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:54:59,301 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:54:59,367 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-24 01:54:59,372 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:54:59,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:54:59,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:54:59,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:54:59,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:54:59,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:54:59,418 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:54:59,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:54:59,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:54:59,418 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:54:59,419 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-24 01:54:59,420 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-24 01:54:59,420 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-24 01:54:59,420 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-24 01:54:59,420 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-24 01:54:59,420 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-24 01:54:59,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:54:59,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-24 01:54:59,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:54:59,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:54:59,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-24 01:54:59,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-24 01:54:59,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-24 01:54:59,423 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:54:59,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:54:59,423 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-24 01:54:59,423 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:54:59,423 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:54:59,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:54:59,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:54:59,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:54:59,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-24 01:54:59,424 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-24 01:54:59,424 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_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d6528b7cc69fe4ab1ae178e84639571fa28bd084493b226ea467e9ac1e22d5f [2024-11-24 01:54:59,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:54:59,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:54:59,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:54:59,756 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:54:59,756 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:54:59,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2024-11-24 01:55:02,644 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/data/194c95e2c/fe6041b3bd3442238a038b20ca4d1b25/FLAGcf0c44611 [2024-11-24 01:55:02,891 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:55:02,892 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2024-11-24 01:55:02,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/data/194c95e2c/fe6041b3bd3442238a038b20ca4d1b25/FLAGcf0c44611 [2024-11-24 01:55:02,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/data/194c95e2c/fe6041b3bd3442238a038b20ca4d1b25 [2024-11-24 01:55:02,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:55:02,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:55:02,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:55:02,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:55:02,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:55:02,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:55:02" (1/1) ... [2024-11-24 01:55:02,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4068c571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:02, skipping insertion in model container [2024-11-24 01:55:02,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:55:02" (1/1) ... [2024-11-24 01:55:02,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:55:03,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:55:03,095 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:55:03,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:55:03,117 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:55:03,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03 WrapperNode [2024-11-24 01:55:03,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:55:03,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:55:03,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:55:03,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:55:03,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,141 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-11-24 01:55:03,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:55:03,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:55:03,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:55:03,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:55:03,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,155 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-24 01:55:03,155 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,155 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,157 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:55:03,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:55:03,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:55:03,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:55:03,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (1/1) ... [2024-11-24 01:55:03,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:03,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:03,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:03,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-24 01:55:03,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:55:03,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:55:03,299 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:55:03,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:55:03,351 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-24 01:55:03,352 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:55:03,362 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:55:03,363 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:55:03,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:55:03 BoogieIcfgContainer [2024-11-24 01:55:03,363 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:55:03,364 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-24 01:55:03,364 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-24 01:55:03,370 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-24 01:55:03,371 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 01:55:03,371 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 24.11 01:55:02" (1/3) ... [2024-11-24 01:55:03,372 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ba43b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.11 01:55:03, skipping insertion in model container [2024-11-24 01:55:03,372 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 01:55:03,372 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:55:03" (2/3) ... [2024-11-24 01:55:03,372 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ba43b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.11 01:55:03, skipping insertion in model container [2024-11-24 01:55:03,372 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-24 01:55:03,373 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:55:03" (3/3) ... [2024-11-24 01:55:03,374 INFO L363 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2024-11-24 01:55:03,424 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-24 01:55:03,424 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-24 01:55:03,424 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-24 01:55:03,424 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-24 01:55:03,424 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-24 01:55:03,424 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-24 01:55:03,424 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-24 01:55:03,425 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-24 01:55:03,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:03,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-24 01:55:03,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:55:03,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:55:03,449 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-24 01:55:03,449 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-24 01:55:03,449 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-24 01:55:03,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:03,450 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-24 01:55:03,450 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:55:03,450 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:55:03,451 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-24 01:55:03,451 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-24 01:55:03,457 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-24 01:55:03,458 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 >= 0;" "main_~y~0#1 := 1;" "assume !(main_~y~0#1 < main_~x~0#1);" "main_~x~0#1 := main_~x~0#1 - 1;" [2024-11-24 01:55:03,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:03,463 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-24 01:55:03,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:03,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272032894] [2024-11-24 01:55:03,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:03,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:03,547 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:55:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:03,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:55:03,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:03,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1174027, now seen corresponding path program 1 times [2024-11-24 01:55:03,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:03,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512456936] [2024-11-24 01:55:03,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:03,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:03,576 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:55:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:03,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:55:03,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:03,583 INFO L85 PathProgramCache]: Analyzing trace with hash 889601229, now seen corresponding path program 1 times [2024-11-24 01:55:03,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:03,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921598814] [2024-11-24 01:55:03,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:03,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:03,597 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:55:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:03,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:55:03,689 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 01:55:03,689 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 01:55:03,689 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 01:55:03,689 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 01:55:03,690 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-24 01:55:03,690 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:03,690 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 01:55:03,690 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 01:55:03,690 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration1_Loop [2024-11-24 01:55:03,690 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 01:55:03,691 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 01:55:03,703 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:03,717 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:03,724 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:03,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:03,817 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 01:55:03,818 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-24 01:55:03,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:03,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:03,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:03,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-24 01:55:03,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 01:55:03,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:03,851 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 01:55:03,852 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 01:55:03,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-24 01:55:03,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:03,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:03,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:03,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-24 01:55:03,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 01:55:03,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:03,893 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 01:55:03,893 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 01:55:03,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:03,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:03,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:03,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-24 01:55:03,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 01:55:03,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:03,918 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 01:55:03,918 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=0} Honda state: {ULTIMATE.start_main_~y~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 01:55:03,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-24 01:55:03,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:03,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:03,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:03,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-24 01:55:03,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 01:55:03,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:03,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-24 01:55:03,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:03,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:03,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:03,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-24 01:55:03,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-24 01:55:03,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:03,994 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-24 01:55:04,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-24 01:55:04,005 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 01:55:04,006 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 01:55:04,006 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 01:55:04,007 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 01:55:04,007 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 01:55:04,007 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,007 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 01:55:04,007 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 01:55:04,007 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration1_Loop [2024-11-24 01:55:04,008 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 01:55:04,008 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 01:55:04,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,023 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,026 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,108 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 01:55:04,112 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 01:55:04,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 01:55:04,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-24 01:55:04,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:55:04,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:55:04,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:55:04,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:55:04,148 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:55:04,149 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:55:04,160 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:55:04,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:04,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-24 01:55:04,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 01:55:04,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:55:04,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:55:04,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:55:04,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:55:04,193 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:55:04,194 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:55:04,200 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:55:04,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:04,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-24 01:55:04,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 01:55:04,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:55:04,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:55:04,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:55:04,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:55:04,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:55:04,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:55:04,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:55:04,236 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:55:04,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-24 01:55:04,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,247 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-24 01:55:04,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 01:55:04,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:55:04,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:55:04,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:55:04,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:55:04,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:55:04,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:55:04,263 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:55:04,266 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 01:55:04,269 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-24 01:55:04,272 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-24 01:55:04,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,277 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-24 01:55:04,280 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 01:55:04,280 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-24 01:55:04,280 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 01:55:04,280 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2024-11-24 01:55:04,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-24 01:55:04,290 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-24 01:55:04,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:04,334 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:55:04,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:04,348 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:04,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:04,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-24 01:55:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:04,448 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 01:55:04,450 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:04,499 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 35 transitions. Complement of second has 6 states. [2024-11-24 01:55:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 01:55:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:04,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2024-11-24 01:55:04,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-24 01:55:04,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:04,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 6 letters. Loop has 4 letters. [2024-11-24 01:55:04,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:04,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 2 letters. Loop has 8 letters. [2024-11-24 01:55:04,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:04,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2024-11-24 01:55:04,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 01:55:04,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 11 states and 14 transitions. [2024-11-24 01:55:04,523 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-11-24 01:55:04,525 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-24 01:55:04,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2024-11-24 01:55:04,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-24 01:55:04,526 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-24 01:55:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2024-11-24 01:55:04,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-24 01:55:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-11-24 01:55:04,553 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-24 01:55:04,553 INFO L425 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-24 01:55:04,553 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-24 01:55:04,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2024-11-24 01:55:04,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 01:55:04,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:55:04,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:55:04,555 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-24 01:55:04,556 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 01:55:04,556 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~x~0#1 >= 0;" "main_~y~0#1 := 1;" [2024-11-24 01:55:04,556 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 < main_~x~0#1;" "main_~y~0#1 := 1 + main_~y~0#1;" [2024-11-24 01:55:04,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash 925703, now seen corresponding path program 1 times [2024-11-24 01:55:04,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:04,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40642007] [2024-11-24 01:55:04,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:04,563 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:55:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:04,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:55:04,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:04,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1541, now seen corresponding path program 1 times [2024-11-24 01:55:04,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:04,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401390715] [2024-11-24 01:55:04,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:04,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:04,573 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:55:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:04,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:55:04,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:04,581 INFO L85 PathProgramCache]: Analyzing trace with hash 889601163, now seen corresponding path program 1 times [2024-11-24 01:55:04,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046845875] [2024-11-24 01:55:04,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:04,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:04,587 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:55:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:04,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:55:04,613 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 01:55:04,613 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 01:55:04,613 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 01:55:04,613 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 01:55:04,613 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-24 01:55:04,613 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,613 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 01:55:04,613 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 01:55:04,613 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration2_Loop [2024-11-24 01:55:04,614 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 01:55:04,614 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 01:55:04,615 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,682 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 01:55:04,682 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-24 01:55:04,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-24 01:55:04,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 01:55:04,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:04,715 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 01:55:04,715 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 01:55:04,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:04,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,727 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 01:55:04,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:04,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-24 01:55:04,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-24 01:55:04,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,760 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-24 01:55:04,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-24 01:55:04,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:04,845 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-24 01:55:04,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-24 01:55:04,849 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 01:55:04,849 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 01:55:04,849 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 01:55:04,849 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 01:55:04,849 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 01:55:04,849 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,849 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 01:55:04,849 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 01:55:04,849 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration2_Loop [2024-11-24 01:55:04,849 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 01:55:04,849 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 01:55:04,851 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,854 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,863 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:04,906 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 01:55:04,906 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 01:55:04,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,908 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-24 01:55:04,912 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 01:55:04,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:55:04,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:55:04,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:55:04,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:55:04,931 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:55:04,931 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:55:04,940 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:55:04,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-24 01:55:04,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,951 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-24 01:55:04,957 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 01:55:04,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:55:04,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:55:04,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:55:04,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:55:04,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:55:04,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:55:04,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:55:04,976 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 01:55:04,982 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-24 01:55:04,982 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-24 01:55:04,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:04,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:04,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:04,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-24 01:55:04,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 01:55:04,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-24 01:55:04,988 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 01:55:04,988 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-24 01:55:04,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-24 01:55:04,999 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-24 01:55:05,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:05,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:55:05,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:05,033 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:05,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:05,054 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 01:55:05,054 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:05,077 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 25 transitions. Complement of second has 5 states. [2024-11-24 01:55:05,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 01:55:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-24 01:55:05,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-24 01:55:05,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:05,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-24 01:55:05,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:05,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2024-11-24 01:55:05,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:05,081 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 25 transitions. [2024-11-24 01:55:05,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 01:55:05,084 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 14 states and 17 transitions. [2024-11-24 01:55:05,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-24 01:55:05,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-24 01:55:05,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 17 transitions. [2024-11-24 01:55:05,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-24 01:55:05,085 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 17 transitions. [2024-11-24 01:55:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 17 transitions. [2024-11-24 01:55:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2024-11-24 01:55:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-11-24 01:55:05,086 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-11-24 01:55:05,086 INFO L425 stractBuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-11-24 01:55:05,087 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-24 01:55:05,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2024-11-24 01:55:05,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-24 01:55:05,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-24 01:55:05,087 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-24 01:55:05,087 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2024-11-24 01:55:05,088 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-24 01:55:05,088 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~x~0#1 >= 0;" "main_~y~0#1 := 1;" "assume !(main_~y~0#1 < main_~x~0#1);" "main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~x~0#1 >= 0;" "main_~y~0#1 := 1;" [2024-11-24 01:55:05,088 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 < main_~x~0#1;" "main_~y~0#1 := 1 + main_~y~0#1;" [2024-11-24 01:55:05,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash 208289425, now seen corresponding path program 2 times [2024-11-24 01:55:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:05,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70258095] [2024-11-24 01:55:05,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:05,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:05,100 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:55:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:05,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:55:05,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:05,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1541, now seen corresponding path program 2 times [2024-11-24 01:55:05,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:05,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336101597] [2024-11-24 01:55:05,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:05,116 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:55:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:55:05,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-24 01:55:05,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1697324907, now seen corresponding path program 1 times [2024-11-24 01:55:05,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-24 01:55:05,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966134291] [2024-11-24 01:55:05,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:05,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:05,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-24 01:55:05,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966134291] [2024-11-24 01:55:05,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966134291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:05,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909459416] [2024-11-24 01:55:05,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:05,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:05,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:05,268 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:05,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:55:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:05,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:55:05,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:05,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909459416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:05,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:55:05,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-24 01:55:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588257816] [2024-11-24 01:55:05,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:05,419 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 01:55:05,419 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 01:55:05,419 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 01:55:05,419 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 01:55:05,419 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-24 01:55:05,419 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:05,419 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 01:55:05,419 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 01:55:05,420 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration3_Loop [2024-11-24 01:55:05,420 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 01:55:05,420 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 01:55:05,421 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:05,425 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:05,433 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:05,475 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 01:55:05,475 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-24 01:55:05,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:05,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:05,479 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:05,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-24 01:55:05,483 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 01:55:05,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:05,507 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-24 01:55:05,507 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-24 01:55:05,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:05,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:05,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:05,515 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:05,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-24 01:55:05,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-24 01:55:05,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:05,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-24 01:55:05,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:05,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:05,541 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:05,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-24 01:55:05,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-24 01:55:05,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-24 01:55:05,642 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-24 01:55:05,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-24 01:55:05,647 INFO L204 LassoAnalysis]: Preferences: [2024-11-24 01:55:05,647 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-24 01:55:05,647 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-24 01:55:05,647 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-24 01:55:05,647 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-24 01:55:05,647 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:05,647 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-24 01:55:05,647 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-24 01:55:05,647 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration3_Loop [2024-11-24 01:55:05,647 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-24 01:55:05,647 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-24 01:55:05,648 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:05,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:05,663 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-24 01:55:05,713 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-24 01:55:05,714 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-24 01:55:05,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:05,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:05,716 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:05,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-24 01:55:05,720 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 01:55:05,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:55:05,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:55:05,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:55:05,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:55:05,734 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-24 01:55:05,734 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-24 01:55:05,741 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-24 01:55:05,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-24 01:55:05,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:05,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:05,754 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:05,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-24 01:55:05,757 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-24 01:55:05,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-24 01:55:05,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-24 01:55:05,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-24 01:55:05,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-24 01:55:05,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-24 01:55:05,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-24 01:55:05,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-24 01:55:05,773 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-24 01:55:05,777 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-24 01:55:05,778 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-24 01:55:05,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-24 01:55:05,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:05,780 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-24 01:55:05,784 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-24 01:55:05,784 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-24 01:55:05,784 INFO L474 LassoAnalysis]: Proved termination. [2024-11-24 01:55:05,784 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2024-11-24 01:55:05,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-24 01:55:05,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-24 01:55:05,794 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-24 01:55:05,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:05,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:55:05,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:05,840 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:05,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:05,864 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 01:55:05,865 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:05,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 18 transitions. Complement of second has 5 states. [2024-11-24 01:55:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 01:55:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-24 01:55:05,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 2 letters. [2024-11-24 01:55:05,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:05,892 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-24 01:55:05,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:05,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:55:05,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:05,942 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:05,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:05,967 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 01:55:05,967 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:05,994 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 18 transitions. Complement of second has 5 states. [2024-11-24 01:55:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 01:55:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-24 01:55:05,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 2 letters. [2024-11-24 01:55:05,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:05,998 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-24 01:55:06,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:06,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:55:06,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:06,040 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:55:06,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:06,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:06,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:06,110 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-24 01:55:06,110 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:06,134 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 17 transitions. Complement of second has 4 states. [2024-11-24 01:55:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-24 01:55:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2024-11-24 01:55:06,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2024-11-24 01:55:06,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:06,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2024-11-24 01:55:06,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:06,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 4 letters. [2024-11-24 01:55:06,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-24 01:55:06,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2024-11-24 01:55:06,137 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-24 01:55:06,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2024-11-24 01:55:06,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-24 01:55:06,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-24 01:55:06,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-24 01:55:06,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 01:55:06,137 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:55:06,137 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:55:06,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-24 01:55:06,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:55:06,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:55:06,140 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:06,142 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-24 01:55:06,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-24 01:55:06,143 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-24 01:55:06,143 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 01:55:06,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-24 01:55:06,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-24 01:55:06,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-24 01:55:06,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-24 01:55:06,143 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:55:06,143 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:55:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:55:06,144 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:55:06,144 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-24 01:55:06,144 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-24 01:55:06,144 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-24 01:55:06,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-24 01:55:06,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 24.11 01:55:06 BoogieIcfgContainer [2024-11-24 01:55:06,152 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-24 01:55:06,153 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:55:06,153 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:55:06,153 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:55:06,154 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:55:03" (3/4) ... [2024-11-24 01:55:06,156 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:55:06,157 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:55:06,158 INFO L158 Benchmark]: Toolchain (without parser) took 3232.77ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 87.0MB in the end (delta: 6.2MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2024-11-24 01:55:06,158 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:55:06,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.53ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 83.3MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:55:06,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.65ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 82.5MB in the end (delta: 785.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:55:06,159 INFO L158 Benchmark]: Boogie Preprocessor took 21.70ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 81.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:55:06,159 INFO L158 Benchmark]: RCFGBuilder took 199.17ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 73.4MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:55:06,159 INFO L158 Benchmark]: BuchiAutomizer took 2788.41ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 87.0MB in the end (delta: -13.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:55:06,159 INFO L158 Benchmark]: Witness Printer took 3.83ms. Allocated memory is still 117.4MB. Free memory was 87.0MB in the beginning and 87.0MB in the end (delta: 21.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:55:06,161 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.53ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 83.3MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.65ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 82.5MB in the end (delta: 785.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.70ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 81.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 199.17ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 73.4MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2788.41ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 87.0MB in the end (delta: -13.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.83ms. Allocated memory is still 117.4MB. Free memory was 87.0MB in the beginning and 87.0MB in the end (delta: 21.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (((long) 2 * x) + 1) and consists of 4 locations. One deterministic module has affine ranking function (((long) -1 * y) + x) and consists of 3 locations. One nondeterministic module has affine ranking function (((long) -1 * y) + x) and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 24 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax197 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-24 01:55:06,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:55:06,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f94eb510-b6d3-447a-88a2-d3f9fd7bf5cf/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE