./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4cf25ea48272ba4463d41281066a1cec5687f4083cfa8522d5a9622c6308689c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:06:14,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:06:14,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-23 02:06:14,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:06:14,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:06:14,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:06:14,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:06:14,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:06:14,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:06:14,864 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:06:14,864 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:06:14,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:06:14,865 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:06:14,866 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-23 02:06:14,867 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-23 02:06:14,867 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-23 02:06:14,868 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-23 02:06:14,869 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-23 02:06:14,869 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-23 02:06:14,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:06:14,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-23 02:06:14,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:06:14,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:06:14,871 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-23 02:06:14,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-23 02:06:14,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-23 02:06:14,871 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:06:14,872 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:06:14,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:06:14,872 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-23 02:06:14,872 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:06:14,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:06:14,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:06:14,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:06:14,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:06:14,874 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-23 02:06:14,874 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cf25ea48272ba4463d41281066a1cec5687f4083cfa8522d5a9622c6308689c [2024-11-23 02:06:15,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:06:15,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:06:15,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:06:15,177 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:06:15,179 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:06:15,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2024-11-23 02:06:16,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:06:16,811 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:06:16,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2024-11-23 02:06:16,823 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cbfbe82e/738e195a08bf4adeb522ad93473a4e5a/FLAG80f4994a5 [2024-11-23 02:06:17,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cbfbe82e/738e195a08bf4adeb522ad93473a4e5a [2024-11-23 02:06:17,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:06:17,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:06:17,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:06:17,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:06:17,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:06:17,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5107fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17, skipping insertion in model container [2024-11-23 02:06:17,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:06:17,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:06:17,405 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:06:17,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:06:17,426 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:06:17,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17 WrapperNode [2024-11-23 02:06:17,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:06:17,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:06:17,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:06:17,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:06:17,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,453 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2024-11-23 02:06:17,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:06:17,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:06:17,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:06:17,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:06:17,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,471 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-23 02:06:17,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:06:17,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:06:17,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:06:17,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:06:17,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (1/1) ... [2024-11-23 02:06:17,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:17,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:17,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:17,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-23 02:06:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:06:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:06:17,621 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:06:17,622 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:06:17,667 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-23 02:06:17,667 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:06:17,692 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:06:17,692 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 02:06:17,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:17 BoogieIcfgContainer [2024-11-23 02:06:17,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:06:17,694 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-23 02:06:17,694 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-23 02:06:17,699 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-23 02:06:17,700 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:06:17,700 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:06:17" (1/3) ... [2024-11-23 02:06:17,705 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@377c1aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:06:17, skipping insertion in model container [2024-11-23 02:06:17,705 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:06:17,705 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:17" (2/3) ... [2024-11-23 02:06:17,706 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@377c1aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:06:17, skipping insertion in model container [2024-11-23 02:06:17,706 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:06:17,706 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:17" (3/3) ... [2024-11-23 02:06:17,707 INFO L332 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1.c [2024-11-23 02:06:17,773 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-23 02:06:17,773 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-23 02:06:17,773 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-23 02:06:17,774 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-23 02:06:17,774 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-23 02:06:17,774 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-23 02:06:17,774 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-23 02:06:17,774 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-23 02:06:17,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:17,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-23 02:06:17,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:06:17,791 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:06:17,795 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-23 02:06:17,796 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-23 02:06:17,796 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-23 02:06:17,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:17,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-23 02:06:17,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:06:17,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:06:17,798 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-23 02:06:17,798 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-23 02:06:17,804 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L17-2true [2024-11-23 02:06:17,805 INFO L747 eck$LassoCheckResult]: Loop: 4#L17-2true assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 2#L19-2true assume !(main_~y~0#1 < main_~x~0#1); 9#L19-3true main_~x~0#1 := main_~x~0#1 - 1; 4#L17-2true [2024-11-23 02:06:17,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:17,810 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-23 02:06:17,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:17,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744943166] [2024-11-23 02:06:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:06:17,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:17,875 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:17,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:17,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:17,891 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2024-11-23 02:06:17,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:17,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681103947] [2024-11-23 02:06:17,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:06:17,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:17,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:17,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:17,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2024-11-23 02:06:17,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:17,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648311459] [2024-11-23 02:06:17,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:06:17,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:17,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:17,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:18,014 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:06:18,015 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:06:18,015 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:06:18,015 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:06:18,016 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:06:18,016 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,016 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:06:18,017 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:06:18,017 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2024-11-23 02:06:18,017 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:06:18,017 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:06:18,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,048 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,054 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,070 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,151 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:06:18,152 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:06:18,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-23 02:06:18,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:18,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:18,194 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:18,194 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: [] [2024-11-23 02:06:18,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:18,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-23 02:06:18,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:18,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:18,227 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:18,228 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: [] [2024-11-23 02:06:18,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:18,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-23 02:06:18,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:18,245 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:18,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-23 02:06:18,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-23 02:06:18,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:06:18,275 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:18,293 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:06:18,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:18,302 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:06:18,303 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:06:18,303 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:06:18,303 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:06:18,303 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:06:18,303 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,303 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:06:18,303 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:06:18,303 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2024-11-23 02:06:18,303 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:06:18,303 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:06:18,305 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,312 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,317 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,380 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:06:18,384 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:06:18,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-23 02:06:18,390 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 [2024-11-23 02:06:18,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:06:18,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:06:18,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:06:18,401 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:06:18,405 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:06:18,405 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:06:18,412 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:06:18,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-23 02:06:18,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-23 02:06:18,427 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 [2024-11-23 02:06:18,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:06:18,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:06:18,441 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:06:18,441 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:06:18,444 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:06:18,444 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:06:18,449 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:06:18,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-23 02:06:18,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-23 02:06:18,463 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 [2024-11-23 02:06:18,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:06:18,476 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:06:18,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:06:18,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:06:18,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:06:18,480 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:06:18,480 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:06:18,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:06:18,486 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:06:18,486 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-23 02:06:18,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-23 02:06:18,492 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:06:18,492 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:06:18,492 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:06:18,492 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 [] [2024-11-23 02:06:18,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:18,501 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:06:18,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:18,532 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 02:06:18,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:18,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:06:18,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:18,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:06:18,615 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 [2024-11-23 02:06:18,617 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:18,667 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 31 transitions. Complement of second has 6 states. [2024-11-23 02:06:18,671 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 [2024-11-23 02:06:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2024-11-23 02:06:18,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 2 letters. Loop has 3 letters. [2024-11-23 02:06:18,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:18,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2024-11-23 02:06:18,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:18,680 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 2 letters. Loop has 6 letters. [2024-11-23 02:06:18,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:18,681 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 31 transitions. [2024-11-23 02:06:18,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:06:18,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2024-11-23 02:06:18,688 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2024-11-23 02:06:18,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-11-23 02:06:18,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-11-23 02:06:18,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:06:18,689 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-23 02:06:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-11-23 02:06:18,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-11-23 02:06:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2024-11-23 02:06:18,711 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2024-11-23 02:06:18,711 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2024-11-23 02:06:18,711 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-23 02:06:18,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2024-11-23 02:06:18,711 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:06:18,711 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:06:18,712 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:06:18,712 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:06:18,712 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-23 02:06:18,712 INFO L745 eck$LassoCheckResult]: Stem: 73#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 74#L-1 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; 71#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 68#L19-2 [2024-11-23 02:06:18,712 INFO L747 eck$LassoCheckResult]: Loop: 68#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 68#L19-2 [2024-11-23 02:06:18,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:18,713 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-11-23 02:06:18,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:18,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744527835] [2024-11-23 02:06:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:06:18,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:18,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:18,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:18,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2024-11-23 02:06:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:18,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320249231] [2024-11-23 02:06:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:06:18,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:18,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:18,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:18,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2024-11-23 02:06:18,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641258519] [2024-11-23 02:06:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:06:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:18,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:18,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:18,797 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:06:18,797 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:06:18,797 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:06:18,797 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:06:18,797 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:06:18,797 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,797 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:06:18,797 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:06:18,798 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2024-11-23 02:06:18,798 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:06:18,798 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:06:18,799 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,804 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,806 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,824 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:18,891 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:06:18,891 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:06:18,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-23 02:06:18,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:18,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:18,916 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:18,916 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: [] [2024-11-23 02:06:18,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:18,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-23 02:06:18,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:18,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:18,941 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:18,941 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:06:18,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-23 02:06:18,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-23 02:06:18,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:18,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:18,962 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:18,962 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:06:18,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:18,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:18,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:18,973 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:18,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-23 02:06:18,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:18,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:19,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-23 02:06:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:19,003 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:19,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-23 02:06:19,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:06:19,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:20,386 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:06:20,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:20,424 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:06:20,424 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:06:20,424 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:06:20,424 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:06:20,424 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:06:20,424 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:20,424 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:06:20,424 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:06:20,424 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2024-11-23 02:06:20,424 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:06:20,424 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:06:20,426 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:20,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:20,437 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:20,439 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:20,450 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:20,453 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:20,510 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:06:20,510 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:06:20,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:20,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:20,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:20,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-23 02:06:20,515 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 [2024-11-23 02:06:20,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:06:20,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:06:20,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:06:20,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:06:20,530 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:06:20,530 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:06:20,534 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:06:20,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:20,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:20,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:20,543 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:20,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-23 02:06:20,545 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 [2024-11-23 02:06:20,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:06:20,555 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:06:20,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:06:20,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:06:20,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:06:20,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:06:20,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:06:20,559 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:06:20,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:20,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:20,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:20,567 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:20,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-23 02:06:20,569 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 [2024-11-23 02:06:20,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:06:20,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:06:20,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:06:20,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:06:20,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:06:20,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:06:20,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:06:20,584 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:06:20,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:20,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:20,592 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:20,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-23 02:06:20,594 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 [2024-11-23 02:06:20,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:06:20,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:06:20,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:06:20,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:06:20,609 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:06:20,610 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:06:20,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-23 02:06:20,645 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:06:20,656 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2024-11-23 02:06:20,656 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2024-11-23 02:06:20,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:20,659 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:20,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-23 02:06:20,663 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:06:20,678 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2024-11-23 02:06:20,678 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:06:20,678 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 [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2024-11-23 02:06:20,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-23 02:06:20,692 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-11-23 02:06:20,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:20,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 02:06:20,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:20,736 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:06:20,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:06:20,737 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-23 02:06:20,737 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:20,764 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 14 transitions. Complement of second has 3 states. [2024-11-23 02:06:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-23 02:06:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-11-23 02:06:20,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 3 letters. Loop has 1 letters. [2024-11-23 02:06:20,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:20,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 4 letters. Loop has 1 letters. [2024-11-23 02:06:20,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:20,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-23 02:06:20,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:20,768 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 14 transitions. [2024-11-23 02:06:20,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:06:20,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 8 states and 11 transitions. [2024-11-23 02:06:20,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2024-11-23 02:06:20,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2024-11-23 02:06:20,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-11-23 02:06:20,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:06:20,769 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-23 02:06:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-11-23 02:06:20,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-11-23 02:06:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2024-11-23 02:06:20,770 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-11-23 02:06:20,770 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-11-23 02:06:20,770 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-23 02:06:20,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2024-11-23 02:06:20,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:06:20,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:06:20,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:06:20,772 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2024-11-23 02:06:20,772 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-23 02:06:20,773 INFO L745 eck$LassoCheckResult]: Stem: 127#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 128#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 125#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 123#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 124#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 126#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 122#L19-2 [2024-11-23 02:06:20,773 INFO L747 eck$LassoCheckResult]: Loop: 122#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 122#L19-2 [2024-11-23 02:06:20,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2024-11-23 02:06:20,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:20,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367641904] [2024-11-23 02:06:20,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:06:20,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:20,784 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:06:20,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:06:20,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:20,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:20,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2024-11-23 02:06:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:20,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998706796] [2024-11-23 02:06:20,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:06:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:20,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:06:20,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:06:20,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:20,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:20,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2024-11-23 02:06:20,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:20,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181213581] [2024-11-23 02:06:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:06:20,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:06:20,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:06:20,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181213581] [2024-11-23 02:06:20,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181213581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:06:20,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223116387] [2024-11-23 02:06:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:06:20,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:06:20,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:20,929 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:06:20,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 02:06:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:20,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:06:20,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:06:20,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:06:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:06:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223116387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:06:21,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:06:21,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-23 02:06:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417331106] [2024-11-23 02:06:21,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:06:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:06:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 02:06:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 02:06:21,055 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 10 states, 9 states have (on average 1.5555555555555556) 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) [2024-11-23 02:06:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:06:21,120 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2024-11-23 02:06:21,120 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 24 transitions. [2024-11-23 02:06:21,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:06:21,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 11 states and 13 transitions. [2024-11-23 02:06:21,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-23 02:06:21,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-23 02:06:21,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2024-11-23 02:06:21,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:06:21,122 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-11-23 02:06:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2024-11-23 02:06:21,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2024-11-23 02:06:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2024-11-23 02:06:21,123 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-11-23 02:06:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 02:06:21,124 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-11-23 02:06:21,124 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-23 02:06:21,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2024-11-23 02:06:21,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:06:21,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:06:21,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:06:21,125 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2024-11-23 02:06:21,125 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-23 02:06:21,125 INFO L745 eck$LassoCheckResult]: Stem: 209#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 210#L-1 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; 207#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 205#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 206#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 212#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 211#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 208#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 204#L19-2 [2024-11-23 02:06:21,125 INFO L747 eck$LassoCheckResult]: Loop: 204#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 204#L19-2 [2024-11-23 02:06:21,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash 301557853, now seen corresponding path program 2 times [2024-11-23 02:06:21,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:21,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815636217] [2024-11-23 02:06:21,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:06:21,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:21,137 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:06:21,137 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:06:21,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:21,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:21,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 3 times [2024-11-23 02:06:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643496603] [2024-11-23 02:06:21,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:06:21,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:21,152 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 02:06:21,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:06:21,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:21,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:21,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:21,154 INFO L85 PathProgramCache]: Analyzing trace with hash 758358871, now seen corresponding path program 3 times [2024-11-23 02:06:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:06:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131944973] [2024-11-23 02:06:21,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:06:21,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:06:21,160 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 02:06:21,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:06:21,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:06:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:06:21,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:06:21,222 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:06:21,222 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:06:21,222 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:06:21,222 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:06:21,222 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:06:21,222 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,223 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:06:21,223 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:06:21,223 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration4_Lasso [2024-11-23 02:06:21,223 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:06:21,223 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:06:21,224 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,228 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,230 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,288 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:06:21,289 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:06:21,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,291 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-23 02:06:21,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:21,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:21,308 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:21,309 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:06:21,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:21,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,320 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-23 02:06:21,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:21,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:21,340 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:21,341 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:06:21,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-23 02:06:21,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,351 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-23 02:06:21,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:21,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:21,377 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:21,377 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:06:21,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:21,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,386 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-23 02:06:21,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:21,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:21,399 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:21,399 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:06:21,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:21,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,409 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-23 02:06:21,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:21,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:21,429 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:06:21,429 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: [] [2024-11-23 02:06:21,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-11-23 02:06:21,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,437 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:06:21,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:21,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-23 02:06:21,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:21,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,467 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-23 02:06:21,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:06:21,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:06:21,533 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:06:21,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:21,537 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:06:21,537 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:06:21,538 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:06:21,538 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:06:21,538 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:06:21,538 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,538 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:06:21,538 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:06:21,538 INFO L132 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration4_Lasso [2024-11-23 02:06:21,538 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:06:21,538 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:06:21,539 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,556 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,558 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:06:21,609 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:06:21,609 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:06:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,612 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-23 02:06:21,615 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 [2024-11-23 02:06:21,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:06:21,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:06:21,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:06:21,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:06:21,631 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:06:21,631 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:06:21,641 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:06:21,651 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2024-11-23 02:06:21,651 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2024-11-23 02:06:21,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:06:21,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:06:21,654 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:06:21,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-23 02:06:21,658 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:06:21,675 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2024-11-23 02:06:21,675 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:06:21,675 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 [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2024-11-23 02:06:21,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:21,691 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-11-23 02:06:21,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:21,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 02:06:21,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:21,742 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:06:21,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:06:21,743 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-23 02:06:21,743 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:21,762 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 15 transitions. Complement of second has 3 states. [2024-11-23 02:06:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-23 02:06:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-11-23 02:06:21,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 8 letters. Loop has 1 letters. [2024-11-23 02:06:21,764 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:21,764 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:06:21,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:21,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 02:06:21,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:21,803 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:06:21,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:06:21,804 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-23 02:06:21,804 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:21,822 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 15 transitions. Complement of second has 3 states. [2024-11-23 02:06:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-23 02:06:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-11-23 02:06:21,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 8 letters. Loop has 1 letters. [2024-11-23 02:06:21,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:21,824 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:06:21,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:06:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:21,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 02:06:21,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:06:21,864 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:06:21,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:06:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:06:21,865 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 1 loop predicates [2024-11-23 02:06:21,865 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:21,885 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 2 states. [2024-11-23 02:06:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-23 02:06:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:06:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-11-23 02:06:21,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2024-11-23 02:06:21,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:21,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 9 letters. Loop has 1 letters. [2024-11-23 02:06:21,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:21,887 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2024-11-23 02:06:21,888 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:06:21,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2024-11-23 02:06:21,888 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:06:21,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2024-11-23 02:06:21,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-23 02:06:21,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-23 02:06:21,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-23 02:06:21,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-23 02:06:21,889 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:06:21,889 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:06:21,889 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:06:21,889 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-23 02:06:21,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-23 02:06:21,889 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:06:21,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-23 02:06:21,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:06:21 BoogieIcfgContainer [2024-11-23 02:06:21,901 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-23 02:06:21,902 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 02:06:21,902 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 02:06:21,902 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 02:06:21,902 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:17" (3/4) ... [2024-11-23 02:06:21,904 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-23 02:06:21,905 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 02:06:21,906 INFO L158 Benchmark]: Toolchain (without parser) took 4693.34ms. Allocated memory is still 155.2MB. Free memory was 87.7MB in the beginning and 52.4MB in the end (delta: 35.3MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2024-11-23 02:06:21,906 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory was 75.2MB in the beginning and 75.1MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:06:21,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.67ms. Allocated memory is still 155.2MB. Free memory was 87.4MB in the beginning and 76.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-23 02:06:21,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.02ms. Allocated memory is still 155.2MB. Free memory was 76.2MB in the beginning and 75.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:06:21,907 INFO L158 Benchmark]: Boogie Preprocessor took 24.08ms. Allocated memory is still 155.2MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:06:21,907 INFO L158 Benchmark]: RCFGBuilder took 211.59ms. Allocated memory is still 155.2MB. Free memory was 73.5MB in the beginning and 127.7MB in the end (delta: -54.2MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2024-11-23 02:06:21,907 INFO L158 Benchmark]: BuchiAutomizer took 4207.15ms. Allocated memory is still 155.2MB. Free memory was 127.7MB in the beginning and 53.3MB in the end (delta: 74.3MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. [2024-11-23 02:06:21,908 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 155.2MB. Free memory was 53.3MB in the beginning and 52.4MB in the end (delta: 953.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:06:21,909 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory was 75.2MB in the beginning and 75.1MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.67ms. Allocated memory is still 155.2MB. Free memory was 87.4MB in the beginning and 76.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.02ms. Allocated memory is still 155.2MB. Free memory was 76.2MB in the beginning and 75.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.08ms. Allocated memory is still 155.2MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 211.59ms. Allocated memory is still 155.2MB. Free memory was 73.5MB in the beginning and 127.7MB in the end (delta: -54.2MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 4207.15ms. Allocated memory is still 155.2MB. Free memory was 127.7MB in the beginning and 53.3MB in the end (delta: 74.3MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 155.2MB. Free memory was 53.3MB in the beginning and 52.4MB in the end (delta: 953.5kB). 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 2 locations. One nondeterministic module has affine ranking function (((long) -1 * y) + x) and consists of 2 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 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, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 20 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf100 lsp59 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq147 hnf93 smp100 dnf100 smp100 tf103 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-23 02:06:21,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:22,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:22,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-23 02:06:22,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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