./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version fca748b1 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.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 d483d112ebc631f1c14642e780c42909cf25d334478fdf38ba7f61b34b8ee811 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:10:03,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:10:03,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-20 22:10:03,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:10:03,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:10:03,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:10:03,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:10:03,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:10:03,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:10:03,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:10:03,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:10:03,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:10:03,269 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:10:03,270 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-20 22:10:03,270 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-20 22:10:03,270 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-20 22:10:03,271 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-20 22:10:03,271 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-20 22:10:03,271 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-20 22:10:03,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:10:03,272 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-20 22:10:03,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:10:03,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:10:03,273 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-20 22:10:03,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-20 22:10:03,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-20 22:10:03,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:10:03,274 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:10:03,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:10:03,274 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-20 22:10:03,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:10:03,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:10:03,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:10:03,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:10:03,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:10:03,276 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-20 22:10:03,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d483d112ebc631f1c14642e780c42909cf25d334478fdf38ba7f61b34b8ee811 [2024-11-20 22:10:03,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:10:03,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:10:03,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:10:03,468 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:10:03,469 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:10:03,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2024-11-20 22:10:04,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:10:04,981 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:10:04,982 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2024-11-20 22:10:04,989 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f5594a62/300b1191375d4053ad9130c8aac321d6/FLAG3057af1d1 [2024-11-20 22:10:05,004 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f5594a62/300b1191375d4053ad9130c8aac321d6 [2024-11-20 22:10:05,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:10:05,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:10:05,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:10:05,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:10:05,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:10:05,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7540ebdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05, skipping insertion in model container [2024-11-20 22:10:05,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,038 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:10:05,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:10:05,177 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:10:05,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:10:05,196 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:10:05,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05 WrapperNode [2024-11-20 22:10:05,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:10:05,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:10:05,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:10:05,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:10:05,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,218 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-20 22:10:05,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:10:05,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:10:05,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:10:05,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:10:05,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,232 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-20 22:10:05,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:10:05,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:10:05,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:10:05,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:10:05,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (1/1) ... [2024-11-20 22:10:05,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:05,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:05,269 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) [2024-11-20 22:10:05,273 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 [2024-11-20 22:10:05,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:10:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:10:05,363 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:10:05,365 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:10:05,408 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-20 22:10:05,408 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:10:05,417 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:10:05,417 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 22:10:05,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:10:05 BoogieIcfgContainer [2024-11-20 22:10:05,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:10:05,418 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-20 22:10:05,418 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-20 22:10:05,421 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-20 22:10:05,422 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:10:05,422 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:10:05" (1/3) ... [2024-11-20 22:10:05,423 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c5c735b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:10:05, skipping insertion in model container [2024-11-20 22:10:05,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:10:05,423 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:10:05" (2/3) ... [2024-11-20 22:10:05,423 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3c5c735b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:10:05, skipping insertion in model container [2024-11-20 22:10:05,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:10:05,423 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:10:05" (3/3) ... [2024-11-20 22:10:05,424 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b.c [2024-11-20 22:10:05,466 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-20 22:10:05,466 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-20 22:10:05,466 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-20 22:10:05,466 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-20 22:10:05,466 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-20 22:10:05,466 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-20 22:10:05,466 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-20 22:10:05,467 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-20 22:10:05,470 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) [2024-11-20 22:10:05,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-20 22:10:05,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:10:05,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:10:05,487 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-20 22:10:05,488 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-20 22:10:05,488 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-20 22:10:05,488 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) [2024-11-20 22:10:05,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-20 22:10:05,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:10:05,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:10:05,490 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-20 22:10:05,490 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-20 22:10:05,497 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~M~0#1;havoc main_~x~0#1;havoc main_~M~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~M~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L17true assume main_~M~0#1 > 0; 2#L19-2true [2024-11-20 22:10:05,497 INFO L747 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~x~0#1 != main_~M~0#1); 9#L19true assume main_~x~0#1 > main_~M~0#1;main_~x~0#1 := 0; 2#L19-2true [2024-11-20 22:10:05,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-20 22:10:05,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:05,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161354867] [2024-11-20 22:10:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:05,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:05,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:05,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:05,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:05,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1412, now seen corresponding path program 1 times [2024-11-20 22:10:05,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:05,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090214667] [2024-11-20 22:10:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:05,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:05,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:05,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 28693989, now seen corresponding path program 1 times [2024-11-20 22:10:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:05,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391769825] [2024-11-20 22:10:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:05,667 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:05,673 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:05,738 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:10:05,739 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:10:05,739 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:10:05,740 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:10:05,740 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:10:05,740 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:05,740 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:10:05,740 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:10:05,740 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2024-11-20 22:10:05,740 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:10:05,741 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:10:05,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:05,763 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:05,765 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:05,768 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:05,771 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:05,778 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:05,842 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:10:05,843 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:10:05,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:05,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:05,852 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) [2024-11-20 22:10:05,853 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 [2024-11-20 22:10:05,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:05,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:05,878 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:10:05,879 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: [] [2024-11-20 22:10:05,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-20 22:10:05,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:05,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:05,889 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) [2024-11-20 22:10:05,892 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 [2024-11-20 22:10:05,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:05,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:05,905 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:10:05,905 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: [] [2024-11-20 22:10:05,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-20 22:10:05,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:05,924 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) [2024-11-20 22:10:05,925 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 [2024-11-20 22:10:05,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:05,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:05,945 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:10:05,945 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: [] [2024-11-20 22:10:05,952 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 [2024-11-20 22:10:05,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:05,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:05,955 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) [2024-11-20 22:10:05,956 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 [2024-11-20 22:10:05,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:05,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:05,975 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:10:05,975 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: [] [2024-11-20 22:10:05,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-20 22:10:05,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:05,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:05,983 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) [2024-11-20 22:10:05,984 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 [2024-11-20 22:10:05,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:05,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:06,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-20 22:10:06,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,012 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) [2024-11-20 22:10:06,014 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 [2024-11-20 22:10:06,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:10:06,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:06,136 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:10:06,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-20 22:10:06,142 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:10:06,142 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:10:06,142 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:10:06,142 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:10:06,142 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:10:06,142 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,143 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:10:06,143 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:10:06,143 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2024-11-20 22:10:06,143 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:10:06,143 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:10:06,145 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,151 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,155 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,159 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,163 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,169 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,220 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:10:06,224 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:10:06,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,229 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) [2024-11-20 22:10:06,230 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 [2024-11-20 22:10:06,232 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 [2024-11-20 22:10:06,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:06,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:06,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:10:06,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:06,246 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-20 22:10:06,246 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-20 22:10:06,250 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:10:06,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-20 22:10:06,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,259 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) [2024-11-20 22:10:06,262 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 [2024-11-20 22:10:06,264 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 [2024-11-20 22:10:06,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:06,274 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:10:06,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:06,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:10:06,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:06,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:10:06,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:10:06,280 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:10:06,291 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 [2024-11-20 22:10:06,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,294 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) [2024-11-20 22:10:06,295 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 [2024-11-20 22:10:06,296 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 [2024-11-20 22:10:06,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:06,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:10:06,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:06,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:10:06,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:06,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:10:06,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:10:06,311 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:10:06,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-20 22:10:06,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,322 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) [2024-11-20 22:10:06,323 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 [2024-11-20 22:10:06,325 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 [2024-11-20 22:10:06,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:06,335 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:10:06,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:06,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:10:06,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:06,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:10:06,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:10:06,338 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:10:06,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-20 22:10:06,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,346 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) [2024-11-20 22:10:06,347 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 [2024-11-20 22:10:06,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:10:06,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:06,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:06,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:10:06,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:06,362 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-20 22:10:06,362 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-20 22:10:06,367 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:10:06,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-20 22:10:06,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,381 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) [2024-11-20 22:10:06,385 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 [2024-11-20 22:10:06,386 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 [2024-11-20 22:10:06,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:06,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:06,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:10:06,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:06,401 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-20 22:10:06,401 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-20 22:10:06,406 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:10:06,417 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2024-11-20 22:10:06,417 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2024-11-20 22:10:06,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,420 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) [2024-11-20 22:10:06,421 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 [2024-11-20 22:10:06,422 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:10:06,434 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2024-11-20 22:10:06,434 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:10:06,435 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~M~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~M~0#1 Supporting invariants [1*ULTIMATE.start_main_~M~0#1 >= 0] [2024-11-20 22:10:06,442 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 [2024-11-20 22:10:06,451 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-11-20 22:10:06,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:06,490 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 22:10:06,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:06,503 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:10:06,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:10:06,540 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 [2024-11-20 22:10:06,542 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) [2024-11-20 22:10:06,582 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 22 states and 29 transitions. Complement of second has 6 states. [2024-11-20 22:10:06,584 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 [2024-11-20 22:10:06,588 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) [2024-11-20 22:10:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2024-11-20 22:10:06,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-20 22:10:06,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:06,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-20 22:10:06,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:06,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-20 22:10:06,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:06,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2024-11-20 22:10:06,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-20 22:10:06,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 9 states and 12 transitions. [2024-11-20 22:10:06,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-20 22:10:06,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2024-11-20 22:10:06,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2024-11-20 22:10:06,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:10:06,597 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-11-20 22:10:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2024-11-20 22:10:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-20 22:10:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2024-11-20 22:10:06,615 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-11-20 22:10:06,615 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-11-20 22:10:06,615 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-20 22:10:06,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2024-11-20 22:10:06,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-20 22:10:06,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:10:06,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:10:06,616 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-20 22:10:06,616 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-20 22:10:06,616 INFO L745 eck$LassoCheckResult]: Stem: 85#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 86#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_~M~0#1;havoc main_~x~0#1;havoc main_~M~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_~M~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 83#L17 assume main_~M~0#1 > 0; 84#L19-2 assume !!(main_~x~0#1 != main_~M~0#1); 81#L19 assume !(main_~x~0#1 > main_~M~0#1);main_~x~0#1 := 1 + main_~x~0#1; 78#L19-2 [2024-11-20 22:10:06,616 INFO L747 eck$LassoCheckResult]: Loop: 78#L19-2 assume !!(main_~x~0#1 != main_~M~0#1); 79#L19 assume main_~x~0#1 > main_~M~0#1;main_~x~0#1 := 0; 78#L19-2 [2024-11-20 22:10:06,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:06,617 INFO L85 PathProgramCache]: Analyzing trace with hash 28693991, now seen corresponding path program 1 times [2024-11-20 22:10:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:06,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907853268] [2024-11-20 22:10:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:06,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:06,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1412, now seen corresponding path program 2 times [2024-11-20 22:10:06,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:06,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062354130] [2024-11-20 22:10:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:06,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1805122026, now seen corresponding path program 1 times [2024-11-20 22:10:06,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969447987] [2024-11-20 22:10:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:06,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:10:06,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:10:06,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969447987] [2024-11-20 22:10:06,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969447987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:10:06,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335302690] [2024-11-20 22:10:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:06,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:10:06,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:10:06,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 22:10:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:06,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:10:06,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:10:06,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:10:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:10:06,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335302690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:10:06,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:10:06,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-20 22:10:06,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525722627] [2024-11-20 22:10:06,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:10:06,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:10:06,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:10:06,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:10:06,777 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:10:06,796 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2024-11-20 22:10:06,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2024-11-20 22:10:06,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-20 22:10:06,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 11 transitions. [2024-11-20 22:10:06,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-20 22:10:06,797 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2024-11-20 22:10:06,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2024-11-20 22:10:06,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:10:06,797 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-11-20 22:10:06,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2024-11-20 22:10:06,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-11-20 22:10:06,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:06,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2024-11-20 22:10:06,798 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 10 transitions. [2024-11-20 22:10:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:10:06,799 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2024-11-20 22:10:06,799 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-20 22:10:06,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2024-11-20 22:10:06,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-20 22:10:06,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:10:06,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:10:06,800 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-20 22:10:06,800 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-20 22:10:06,800 INFO L745 eck$LassoCheckResult]: Stem: 149#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 150#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~M~0#1;havoc main_~x~0#1;havoc main_~M~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~M~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 147#L17 assume main_~M~0#1 > 0; 148#L19-2 assume !!(main_~x~0#1 != main_~M~0#1); 144#L19 [2024-11-20 22:10:06,800 INFO L747 eck$LassoCheckResult]: Loop: 144#L19 assume !(main_~x~0#1 > main_~M~0#1);main_~x~0#1 := 1 + main_~x~0#1; 143#L19-2 assume !!(main_~x~0#1 != main_~M~0#1); 144#L19 [2024-11-20 22:10:06,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash 925612, now seen corresponding path program 1 times [2024-11-20 22:10:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:06,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704420169] [2024-11-20 22:10:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:06,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:06,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1564, now seen corresponding path program 1 times [2024-11-20 22:10:06,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:06,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166419066] [2024-11-20 22:10:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:06,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash 889513735, now seen corresponding path program 2 times [2024-11-20 22:10:06,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:06,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505315372] [2024-11-20 22:10:06,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:06,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:06,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:06,835 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:10:06,835 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:10:06,835 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:10:06,835 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:10:06,835 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:10:06,835 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,835 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:10:06,835 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:10:06,835 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2024-11-20 22:10:06,836 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:10:06,836 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:10:06,836 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,841 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:06,894 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:10:06,894 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:10:06,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,896 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) [2024-11-20 22:10:06,897 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 [2024-11-20 22:10:06,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:06,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:06,917 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:10:06,917 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: [] [2024-11-20 22:10:06,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-20 22:10:06,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,926 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) [2024-11-20 22:10:06,927 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 [2024-11-20 22:10:06,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:06,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:06,946 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:10:06,946 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:10:06,953 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 [2024-11-20 22:10:06,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,955 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) [2024-11-20 22:10:06,956 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 [2024-11-20 22:10:06,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:06,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:06,983 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 [2024-11-20 22:10:06,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:06,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:06,985 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) [2024-11-20 22:10:06,987 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 [2024-11-20 22:10:06,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:10:06,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:07,148 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:10:07,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-20 22:10:07,156 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:10:07,156 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:10:07,156 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:10:07,156 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:10:07,156 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:10:07,156 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,156 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:10:07,156 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:10:07,156 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2024-11-20 22:10:07,156 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:10:07,156 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:10:07,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,161 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,164 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,220 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:10:07,220 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:10:07,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,222 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2024-11-20 22:10:07,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-20 22:10:07,224 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 [2024-11-20 22:10:07,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:07,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:07,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:10:07,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:07,237 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-20 22:10:07,237 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-20 22:10:07,240 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:10:07,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-20 22:10:07,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,252 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) [2024-11-20 22:10:07,255 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 [2024-11-20 22:10:07,256 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 [2024-11-20 22:10:07,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:07,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:07,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:10:07,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:07,271 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-20 22:10:07,271 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-20 22:10:07,275 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:10:07,283 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 [2024-11-20 22:10:07,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,288 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) [2024-11-20 22:10:07,292 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 [2024-11-20 22:10:07,294 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 [2024-11-20 22:10:07,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:07,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:10:07,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:07,307 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-11-20 22:10:07,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:07,309 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2024-11-20 22:10:07,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:10:07,314 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:10:07,319 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:10:07,319 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-20 22:10:07,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,321 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) [2024-11-20 22:10:07,323 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 [2024-11-20 22:10:07,324 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:10:07,324 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:10:07,324 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:10:07,324 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0#1, ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~M~0#1 - 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2024-11-20 22:10:07,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-20 22:10:07,333 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:10:07,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:07,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:10:07,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:07,357 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:10:07,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:10:07,376 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 [2024-11-20 22:10:07,376 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:07,410 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 15 transitions. Complement of second has 5 states. [2024-11-20 22:10:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-20 22:10:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-11-20 22:10:07,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-20 22:10:07,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:07,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-20 22:10:07,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:07,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2024-11-20 22:10:07,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:07,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2024-11-20 22:10:07,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-20 22:10:07,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 10 transitions. [2024-11-20 22:10:07,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-20 22:10:07,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-20 22:10:07,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2024-11-20 22:10:07,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:10:07,414 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-20 22:10:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2024-11-20 22:10:07,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-11-20 22:10:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 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) [2024-11-20 22:10:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-11-20 22:10:07,415 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-20 22:10:07,415 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-20 22:10:07,416 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-20 22:10:07,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2024-11-20 22:10:07,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-20 22:10:07,416 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:10:07,416 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:10:07,416 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2024-11-20 22:10:07,416 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-20 22:10:07,416 INFO L745 eck$LassoCheckResult]: Stem: 207#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 208#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_~M~0#1;havoc main_~x~0#1;havoc main_~M~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_~M~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 206#L17 assume main_~M~0#1 > 0; 202#L19-2 assume !!(main_~x~0#1 != main_~M~0#1); 203#L19 assume main_~x~0#1 > main_~M~0#1;main_~x~0#1 := 0; 204#L19-2 assume !!(main_~x~0#1 != main_~M~0#1); 205#L19 [2024-11-20 22:10:07,417 INFO L747 eck$LassoCheckResult]: Loop: 205#L19 assume !(main_~x~0#1 > main_~M~0#1);main_~x~0#1 := 1 + main_~x~0#1; 209#L19-2 assume !!(main_~x~0#1 != main_~M~0#1); 205#L19 [2024-11-20 22:10:07,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash 889513673, now seen corresponding path program 2 times [2024-11-20 22:10:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075364034] [2024-11-20 22:10:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:07,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:07,438 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 [2024-11-20 22:10:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:07,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-20 22:10:07,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:07,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1564, now seen corresponding path program 2 times [2024-11-20 22:10:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:07,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620881448] [2024-11-20 22:10:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:07,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:07,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:07,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash 124148452, now seen corresponding path program 2 times [2024-11-20 22:10:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:10:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030798535] [2024-11-20 22:10:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:10:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:10:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:07,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:10:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:10:07,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:10:07,499 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:10:07,499 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:10:07,499 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:10:07,499 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:10:07,499 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:10:07,499 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,500 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:10:07,500 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:10:07,500 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2024-11-20 22:10:07,500 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:10:07,500 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:10:07,501 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,506 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,512 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,581 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:10:07,581 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:10:07,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,586 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) [2024-11-20 22:10:07,588 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 [2024-11-20 22:10:07,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:07,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:07,608 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:10:07,608 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: [] [2024-11-20 22:10:07,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-20 22:10:07,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,619 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) [2024-11-20 22:10:07,620 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 [2024-11-20 22:10:07,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:10:07,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:07,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-11-20 22:10:07,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,652 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) [2024-11-20 22:10:07,656 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 [2024-11-20 22:10:07,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:10:07,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:10:07,806 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:10:07,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-20 22:10:07,813 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:10:07,814 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:10:07,814 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:10:07,814 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:10:07,814 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:10:07,814 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,814 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:10:07,814 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:10:07,814 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2024-11-20 22:10:07,814 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:10:07,814 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:10:07,815 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:10:07,906 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:10:07,906 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:10:07,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,907 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) [2024-11-20 22:10:07,911 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 [2024-11-20 22:10:07,912 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:10:07,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:10:07,922 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:10:07,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:10:07,922 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-11-20 22:10:07,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:10:07,923 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2024-11-20 22:10:07,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:10:07,926 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:10:07,929 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:10:07,929 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-20 22:10:07,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:10:07,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:10:07,930 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) [2024-11-20 22:10:07,933 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 [2024-11-20 22:10:07,934 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:10:07,934 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:10:07,934 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:10:07,934 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0#1, ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~M~0#1 - 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2024-11-20 22:10:07,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-11-20 22:10:07,943 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:10:07,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:07,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:10:07,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:07,972 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:10:07,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:07,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:10:07,986 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 [2024-11-20 22:10:07,987 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:07,990 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 10 transitions. Complement of second has 3 states. [2024-11-20 22:10:07,993 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 [2024-11-20 22:10:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-11-20 22:10:07,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-20 22:10:07,994 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:07,994 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:10:08,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:08,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:10:08,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:08,021 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:10:08,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:10:08,034 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-20 22:10:08,035 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:08,038 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 10 transitions. Complement of second has 3 states. [2024-11-20 22:10:08,042 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 [2024-11-20 22:10:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-11-20 22:10:08,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-20 22:10:08,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:08,043 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:10:08,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:10:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:08,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:10:08,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:10:08,069 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:10:08,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:10:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:10:08,085 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-20 22:10:08,085 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:08,096 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 11 transitions. Complement of second has 4 states. [2024-11-20 22:10:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-20 22:10:08,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:10:08,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2024-11-20 22:10:08,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-20 22:10:08,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:08,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 2 letters. [2024-11-20 22:10:08,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:08,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2024-11-20 22:10:08,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:10:08,099 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2024-11-20 22:10:08,099 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-20 22:10:08,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2024-11-20 22:10:08,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-20 22:10:08,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-20 22:10:08,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-20 22:10:08,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-20 22:10:08,099 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:10:08,099 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:10:08,099 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:10:08,100 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-20 22:10:08,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-20 22:10:08,100 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-20 22:10:08,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-20 22:10:08,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:10:08 BoogieIcfgContainer [2024-11-20 22:10:08,106 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-20 22:10:08,106 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 22:10:08,106 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 22:10:08,107 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 22:10:08,107 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:10:05" (3/4) ... [2024-11-20 22:10:08,109 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 22:10:08,110 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 22:10:08,110 INFO L158 Benchmark]: Toolchain (without parser) took 3101.52ms. Allocated memory is still 190.8MB. Free memory was 121.7MB in the beginning and 119.5MB in the end (delta: 2.2MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2024-11-20 22:10:08,110 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 190.8MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:10:08,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.36ms. Allocated memory is still 190.8MB. Free memory was 121.5MB in the beginning and 110.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-20 22:10:08,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.56ms. Allocated memory is still 190.8MB. Free memory was 110.2MB in the beginning and 108.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:10:08,111 INFO L158 Benchmark]: Boogie Preprocessor took 21.02ms. Allocated memory is still 190.8MB. Free memory was 108.9MB in the beginning and 107.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:10:08,111 INFO L158 Benchmark]: RCFGBuilder took 176.53ms. Allocated memory is still 190.8MB. Free memory was 107.6MB in the beginning and 98.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-20 22:10:08,111 INFO L158 Benchmark]: BuchiAutomizer took 2687.83ms. Allocated memory is still 190.8MB. Free memory was 98.4MB in the beginning and 119.5MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:10:08,112 INFO L158 Benchmark]: Witness Printer took 3.34ms. Allocated memory is still 190.8MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:10:08,113 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 190.8MB. Free memory is still 150.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.36ms. Allocated memory is still 190.8MB. Free memory was 121.5MB in the beginning and 110.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.56ms. Allocated memory is still 190.8MB. Free memory was 110.2MB in the beginning and 108.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.02ms. Allocated memory is still 190.8MB. Free memory was 108.9MB in the beginning and 107.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 176.53ms. Allocated memory is still 190.8MB. Free memory was 107.6MB in the beginning and 98.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2687.83ms. Allocated memory is still 190.8MB. Free memory was 98.4MB in the beginning and 119.5MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.34ms. Allocated memory is still 190.8MB. Free memory is still 119.5MB. 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 (x + ((long) -1 * M)) and consists of 4 locations. One deterministic module has affine ranking function ((((long) 2 * M) + ((long) -2 * x)) + 1) and consists of 3 locations. One nondeterministic module has affine ranking function ((((long) 2 * M) + ((long) -2 * x)) + 1) and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 29 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax193 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf95 smp100 dnf137 smp85 tf104 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-20 22:10:08,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-11-20 22:10:08,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-20 22:10:08,531 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