./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:48:51,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:48:51,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-03-09 06:48:51,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:48:51,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:48:51,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-09 06:48:51,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:48:51,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:48:51,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:48:51,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:48:51,251 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:48:51,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:48:51,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:48:51,251 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:48:51,252 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-09 06:48:51,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-09 06:48:51,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-09 06:48:51,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:48:51,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:48:51,253 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-09 06:48:51,253 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:48:51,253 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:48:51,253 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:48:51,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:48:51,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:48:51,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:48:51,254 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-09 06:48:51,254 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2025-03-09 06:48:51,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:48:51,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:48:51,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:48:51,474 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:48:51,475 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:48:51,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2025-03-09 06:48:52,571 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b20d3b4c/655cab7eb01243a3b6962505bd427df6/FLAG51c4c6bd4 [2025-03-09 06:48:52,795 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:48:52,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2025-03-09 06:48:52,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b20d3b4c/655cab7eb01243a3b6962505bd427df6/FLAG51c4c6bd4 [2025-03-09 06:48:53,149 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b20d3b4c/655cab7eb01243a3b6962505bd427df6 [2025-03-09 06:48:53,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:48:53,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:48:53,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:48:53,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:48:53,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:48:53,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19211522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53, skipping insertion in model container [2025-03-09 06:48:53,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:48:53,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:48:53,258 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:48:53,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:48:53,274 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:48:53,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53 WrapperNode [2025-03-09 06:48:53,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:48:53,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:48:53,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:48:53,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:48:53,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,289 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2025-03-09 06:48:53,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:48:53,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:48:53,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:48:53,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:48:53,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,298 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-09 06:48:53,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,300 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:48:53,302 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:48:53,302 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:48:53,302 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:48:53,304 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (1/1) ... [2025-03-09 06:48:53,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:53,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:53,331 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) [2025-03-09 06:48:53,334 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 [2025-03-09 06:48:53,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:48:53,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:48:53,401 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:48:53,403 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:48:53,470 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-03-09 06:48:53,471 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:48:53,478 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:48:53,478 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:48:53,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:48:53 BoogieIcfgContainer [2025-03-09 06:48:53,479 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:48:53,480 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-09 06:48:53,480 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-09 06:48:53,484 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-09 06:48:53,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:48:53,485 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.03 06:48:53" (1/3) ... [2025-03-09 06:48:53,487 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ba6071a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 06:48:53, skipping insertion in model container [2025-03-09 06:48:53,487 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:48:53,488 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:48:53" (2/3) ... [2025-03-09 06:48:53,488 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ba6071a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 06:48:53, skipping insertion in model container [2025-03-09 06:48:53,488 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:48:53,488 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:48:53" (3/3) ... [2025-03-09 06:48:53,489 INFO L363 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2025-03-09 06:48:53,533 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-09 06:48:53,534 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-09 06:48:53,534 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-09 06:48:53,534 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-09 06:48:53,534 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-09 06:48:53,534 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-09 06:48:53,534 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-09 06:48:53,534 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-09 06:48:53,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:53,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:48:53,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:48:53,548 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:48:53,552 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 06:48:53,552 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:48:53,552 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-09 06:48:53,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:53,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:48:53,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:48:53,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:48:53,555 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 06:48:53,555 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:48:53,561 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" [2025-03-09 06:48:53,562 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" [2025-03-09 06:48:53,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:53,568 INFO L85 PathProgramCache]: Analyzing trace with hash 39687, now seen corresponding path program 1 times [2025-03-09 06:48:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:53,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021874676] [2025-03-09 06:48:53,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:48:53,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:53,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:48:53,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:48:53,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:53,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:53,635 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:53,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:48:53,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:48:53,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:53,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:53,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:53,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1119, now seen corresponding path program 1 times [2025-03-09 06:48:53,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:53,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321959070] [2025-03-09 06:48:53,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:48:53,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:53,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:53,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:53,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:53,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:53,657 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:53,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:53,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:53,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:53,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:53,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:53,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 38139365, now seen corresponding path program 1 times [2025-03-09 06:48:53,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:53,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275141055] [2025-03-09 06:48:53,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:48:53,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:53,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:48:53,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:48:53,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:53,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:53,666 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:53,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:48:53,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:48:53,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:53,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:53,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:53,732 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:53,732 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:53,732 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:53,733 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:53,733 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:48:53,733 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:53,733 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:53,733 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:53,733 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2025-03-09 06:48:53,733 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:53,733 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:53,742 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:53,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:53,757 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:53,818 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:53,818 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:48:53,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:53,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:53,822 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) [2025-03-09 06:48:53,824 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 [2025-03-09 06:48:53,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:53,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:53,846 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:53,847 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: [] [2025-03-09 06:48:53,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:53,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:53,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:53,855 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) [2025-03-09 06:48:53,856 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 [2025-03-09 06:48:53,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:53,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:53,877 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:53,877 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: [] [2025-03-09 06:48:53,882 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 [2025-03-09 06:48:53,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:53,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:53,884 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) [2025-03-09 06:48:53,886 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 [2025-03-09 06:48:53,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:53,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:53,903 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 [2025-03-09 06:48:53,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:53,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:53,906 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) [2025-03-09 06:48:53,906 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 [2025-03-09 06:48:53,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:48:53,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:54,038 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:48:54,044 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 [2025-03-09 06:48:54,044 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:54,044 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:54,044 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:54,044 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:54,044 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:48:54,044 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,044 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:54,044 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:54,045 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2025-03-09 06:48:54,045 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:54,045 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:54,046 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,051 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,055 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,101 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:54,104 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:48:54,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,107 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) [2025-03-09 06:48:54,108 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 [2025-03-09 06:48:54,109 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 [2025-03-09 06:48:54,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:54,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:54,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:54,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:54,125 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:54,126 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:54,130 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:54,135 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 [2025-03-09 06:48:54,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,138 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) [2025-03-09 06:48:54,138 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 [2025-03-09 06:48:54,140 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:48:54,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:54,150 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:54,150 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:54,150 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:54,152 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:54,152 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:54,159 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:54,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-03-09 06:48:54,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,167 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) [2025-03-09 06:48:54,168 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 [2025-03-09 06:48:54,170 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 [2025-03-09 06:48:54,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:54,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:54,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:54,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:54,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:54,182 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:48:54,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:54,185 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:54,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:54,192 INFO L451 LassoAnalysis]: Using template '2-nested'. [2025-03-09 06:48:54,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,195 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) [2025-03-09 06:48:54,196 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 [2025-03-09 06:48:54,197 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 [2025-03-09 06:48:54,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:54,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:54,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:54,209 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2025-03-09 06:48:54,215 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2025-03-09 06:48:54,216 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2025-03-09 06:48:54,221 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:54,227 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 [2025-03-09 06:48:54,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,230 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) [2025-03-09 06:48:54,230 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 [2025-03-09 06:48:54,232 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 [2025-03-09 06:48:54,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:54,242 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:54,242 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:54,242 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2025-03-09 06:48:54,245 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2025-03-09 06:48:54,245 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2025-03-09 06:48:54,249 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:54,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:54,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,258 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) [2025-03-09 06:48:54,260 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 [2025-03-09 06:48:54,261 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 [2025-03-09 06:48:54,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:54,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:54,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:54,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:54,272 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2025-03-09 06:48:54,274 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2025-03-09 06:48:54,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:54,277 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:48:54,282 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-03-09 06:48:54,285 INFO L444 ModelExtractionUtils]: 5 out of 9 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-09 06:48:54,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,289 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) [2025-03-09 06:48:54,290 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 [2025-03-09 06:48:54,291 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:48:54,292 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:48:54,292 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:48:54,292 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2025-03-09 06:48:54,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-03-09 06:48:54,301 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:48:54,311 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2025-03-09 06:48:54,312 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2025-03-09 06:48:54,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:54,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:48:54,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:48:54,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:54,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:54,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:54,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:54,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:54,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:54,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:54,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:54,357 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:48:54,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:54,441 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 [2025-03-09 06:48:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:54,505 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 [2025-03-09 06:48:54,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2025-03-09 06:48:54,535 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). 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 18 states and 23 transitions. Complement of second has 5 states. [2025-03-09 06:48:54,537 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 [2025-03-09 06:48:54,539 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) [2025-03-09 06:48:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2025-03-09 06:48:54,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2025-03-09 06:48:54,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:54,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2025-03-09 06:48:54,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:54,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2025-03-09 06:48:54,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:54,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2025-03-09 06:48:54,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:48:54,549 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 9 states and 12 transitions. [2025-03-09 06:48:54,550 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2025-03-09 06:48:54,552 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2025-03-09 06:48:54,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2025-03-09 06:48:54,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:48:54,552 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2025-03-09 06:48:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2025-03-09 06:48:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-03-09 06:48:54,567 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) [2025-03-09 06:48:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2025-03-09 06:48:54,568 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2025-03-09 06:48:54,568 INFO L432 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2025-03-09 06:48:54,568 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-03-09 06:48:54,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2025-03-09 06:48:54,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:48:54,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:48:54,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:48:54,569 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-03-09 06:48:54,569 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-03-09 06:48:54,569 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" [2025-03-09 06:48:54,569 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" [2025-03-09 06:48:54,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash 38139366, now seen corresponding path program 1 times [2025-03-09 06:48:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:54,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121919366] [2025-03-09 06:48:54,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:48:54,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:54,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:48:54,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:48:54,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:54,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:54,578 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:54,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:48:54,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:48:54,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:54,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:54,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:54,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash 35, now seen corresponding path program 1 times [2025-03-09 06:48:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561662230] [2025-03-09 06:48:54,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:48:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:54,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-09 06:48:54,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-09 06:48:54,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:54,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:54,592 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:54,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-09 06:48:54,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-09 06:48:54,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:54,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:54,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:54,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1182320350, now seen corresponding path program 2 times [2025-03-09 06:48:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:54,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895352134] [2025-03-09 06:48:54,595 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:48:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:54,599 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 6 statements into 2 equivalence classes. [2025-03-09 06:48:54,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:48:54,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:48:54,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:54,602 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:54,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:48:54,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:48:54,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:54,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:54,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:54,627 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:54,627 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:54,627 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:54,627 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:54,627 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:48:54,627 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,627 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:54,627 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:54,627 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2025-03-09 06:48:54,627 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:54,627 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:54,628 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,630 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,671 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:54,671 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:48:54,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,673 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) [2025-03-09 06:48:54,674 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 [2025-03-09 06:48:54,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:54,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:54,693 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:54,693 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: [] [2025-03-09 06:48:54,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:54,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,700 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) [2025-03-09 06:48:54,702 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 [2025-03-09 06:48:54,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:54,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:54,721 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:54,721 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: [] [2025-03-09 06:48:54,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-03-09 06:48:54,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,730 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:48:54,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-03-09 06:48:54,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:54,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:54,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-03-09 06:48:54,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,750 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) [2025-03-09 06:48:54,751 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 [2025-03-09 06:48:54,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:48:54,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:54,776 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:54,776 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=-7}, {ULTIMATE.start_main_~x~0#1=7}] Lambdas: [8, 2, 1] Nus: [1, 1] [2025-03-09 06:48:54,782 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 [2025-03-09 06:48:54,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,784 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) [2025-03-09 06:48:54,785 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 [2025-03-09 06:48:54,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:54,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:54,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-03-09 06:48:54,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,804 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) [2025-03-09 06:48:54,805 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 [2025-03-09 06:48:54,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:48:54,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:54,875 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:48:54,880 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 [2025-03-09 06:48:54,880 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:54,880 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:54,880 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:54,880 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:54,880 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:48:54,880 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,880 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:54,880 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:54,880 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2025-03-09 06:48:54,880 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:54,880 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:54,881 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,889 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,892 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:54,930 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:54,930 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:48:54,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,932 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) [2025-03-09 06:48:54,934 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 [2025-03-09 06:48:54,935 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 [2025-03-09 06:48:54,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:54,945 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:54,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:54,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:54,947 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:54,947 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:54,953 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:54,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:54,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,962 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) [2025-03-09 06:48:54,964 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 [2025-03-09 06:48:54,965 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 [2025-03-09 06:48:54,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:54,975 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:54,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:54,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:54,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:54,976 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:48:54,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:54,979 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:54,984 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 [2025-03-09 06:48:54,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:54,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:54,987 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) [2025-03-09 06:48:54,988 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 [2025-03-09 06:48:54,989 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 [2025-03-09 06:48:54,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:55,000 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:55,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:55,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:55,002 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:55,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:55,005 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:55,011 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 [2025-03-09 06:48:55,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,013 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) [2025-03-09 06:48:55,015 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 [2025-03-09 06:48:55,016 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 [2025-03-09 06:48:55,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:55,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:55,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:55,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:55,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:55,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:48:55,027 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:55,029 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:48:55,033 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-03-09 06:48:55,033 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-09 06:48:55,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,035 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) [2025-03-09 06:48:55,036 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 [2025-03-09 06:48:55,037 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:48:55,037 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:48:55,038 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:48:55,038 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2025-03-09 06:48:55,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-03-09 06:48:55,044 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:48:55,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:55,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:48:55,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:48:55,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:55,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:55,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:55,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-09 06:48:55,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-09 06:48:55,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:55,070 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:48:55,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:55,071 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 [2025-03-09 06:48:55,071 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2025-03-09 06:48:55,076 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 12 states and 17 transitions. Complement of second has 3 states. [2025-03-09 06:48:55,076 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 [2025-03-09 06:48:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2025-03-09 06:48:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2025-03-09 06:48:55,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 5 letters. Loop has 1 letters. [2025-03-09 06:48:55,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:55,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 6 letters. Loop has 1 letters. [2025-03-09 06:48:55,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:55,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2025-03-09 06:48:55,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:55,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2025-03-09 06:48:55,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:48:55,078 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2025-03-09 06:48:55,078 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-03-09 06:48:55,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2025-03-09 06:48:55,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2025-03-09 06:48:55,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:48:55,078 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2025-03-09 06:48:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2025-03-09 06:48:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2025-03-09 06:48:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2025-03-09 06:48:55,079 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2025-03-09 06:48:55,079 INFO L432 stractBuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2025-03-09 06:48:55,079 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-03-09 06:48:55,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2025-03-09 06:48:55,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:48:55,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:48:55,081 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:48:55,081 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-03-09 06:48:55,081 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:48:55,082 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" [2025-03-09 06:48:55,082 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" [2025-03-09 06:48:55,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:55,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1182320349, now seen corresponding path program 1 times [2025-03-09 06:48:55,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:55,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993425652] [2025-03-09 06:48:55,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:48:55,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:55,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:48:55,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:48:55,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,090 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:55,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:48:55,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:48:55,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,095 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:55,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:55,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1119, now seen corresponding path program 2 times [2025-03-09 06:48:55,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:55,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345689036] [2025-03-09 06:48:55,096 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:48:55,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:55,102 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:55,103 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:55,103 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:48:55,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,103 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:55,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:55,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:55,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:55,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:55,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1956477893, now seen corresponding path program 2 times [2025-03-09 06:48:55,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:55,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593572743] [2025-03-09 06:48:55,113 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:48:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:55,115 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 8 statements into 2 equivalence classes. [2025-03-09 06:48:55,122 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:55,122 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:48:55,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,123 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:55,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:55,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:55,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:55,151 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:55,151 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:55,151 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:55,151 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:55,151 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:48:55,151 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,151 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:55,151 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:55,151 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2025-03-09 06:48:55,151 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:55,151 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:55,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,155 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,164 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,196 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:55,196 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:48:55,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,198 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) [2025-03-09 06:48:55,200 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 [2025-03-09 06:48:55,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:55,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:55,218 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:55,218 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: [] [2025-03-09 06:48:55,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:55,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,226 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) [2025-03-09 06:48:55,227 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 [2025-03-09 06:48:55,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:55,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:55,245 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 [2025-03-09 06:48:55,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,247 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) [2025-03-09 06:48:55,248 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 [2025-03-09 06:48:55,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:48:55,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:55,368 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:48:55,374 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 [2025-03-09 06:48:55,374 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:55,374 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:55,374 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:55,374 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:55,374 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:48:55,374 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,374 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:55,374 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:55,374 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2025-03-09 06:48:55,374 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:55,374 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:55,375 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,383 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,416 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:55,417 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:48:55,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,420 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) [2025-03-09 06:48:55,421 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 [2025-03-09 06:48:55,422 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 [2025-03-09 06:48:55,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:55,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:55,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:55,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:55,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:55,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:55,436 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:55,442 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 [2025-03-09 06:48:55,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,444 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) [2025-03-09 06:48:55,446 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 [2025-03-09 06:48:55,448 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 [2025-03-09 06:48:55,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:55,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:55,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:55,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:55,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:55,459 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:48:55,459 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:55,461 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:55,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:55,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,470 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:48:55,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-03-09 06:48:55,472 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 [2025-03-09 06:48:55,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:55,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:55,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:55,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:55,484 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:55,484 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:55,486 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:55,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-03-09 06:48:55,492 INFO L451 LassoAnalysis]: Using template '2-nested'. [2025-03-09 06:48:55,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,494 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2025-03-09 06:48:55,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-03-09 06:48:55,496 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 [2025-03-09 06:48:55,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:55,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:55,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:55,506 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2025-03-09 06:48:55,507 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2025-03-09 06:48:55,507 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2025-03-09 06:48:55,511 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:55,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-03-09 06:48:55,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,519 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2025-03-09 06:48:55,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-03-09 06:48:55,521 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 [2025-03-09 06:48:55,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:55,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:55,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:55,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:55,532 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2025-03-09 06:48:55,533 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2025-03-09 06:48:55,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:55,536 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:48:55,543 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2025-03-09 06:48:55,543 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-03-09 06:48:55,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,545 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2025-03-09 06:48:55,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-03-09 06:48:55,546 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:48:55,546 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:48:55,546 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:48:55,546 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2025-03-09 06:48:55,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:55,552 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:48:55,556 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2025-03-09 06:48:55,557 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2025-03-09 06:48:55,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:55,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:48:55,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:48:55,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:55,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:55,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:55,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:55,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:55,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:55,583 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:48:55,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:55,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:55,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:55,664 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 [2025-03-09 06:48:55,664 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 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) [2025-03-09 06:48:55,677 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. 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 21 states and 30 transitions. Complement of second has 5 states. [2025-03-09 06:48:55,677 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 [2025-03-09 06:48:55,678 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) [2025-03-09 06:48:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2025-03-09 06:48:55,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2025-03-09 06:48:55,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:55,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2025-03-09 06:48:55,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:55,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2025-03-09 06:48:55,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:55,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2025-03-09 06:48:55,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:48:55,680 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 19 states and 28 transitions. [2025-03-09 06:48:55,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2025-03-09 06:48:55,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2025-03-09 06:48:55,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 28 transitions. [2025-03-09 06:48:55,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:48:55,680 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 28 transitions. [2025-03-09 06:48:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 28 transitions. [2025-03-09 06:48:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2025-03-09 06:48:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 17 states have internal predecessors, (27), 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) [2025-03-09 06:48:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2025-03-09 06:48:55,684 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 27 transitions. [2025-03-09 06:48:55,684 INFO L432 stractBuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2025-03-09 06:48:55,684 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-03-09 06:48:55,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2025-03-09 06:48:55,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:48:55,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:48:55,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:48:55,684 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2025-03-09 06:48:55,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:48:55,685 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" [2025-03-09 06:48:55,685 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" [2025-03-09 06:48:55,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1956505793, now seen corresponding path program 3 times [2025-03-09 06:48:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:55,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178145014] [2025-03-09 06:48:55,685 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:48:55,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:55,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 8 statements into 2 equivalence classes. [2025-03-09 06:48:55,693 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:55,693 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 06:48:55,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,693 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:55,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:55,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:55,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:55,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1119, now seen corresponding path program 3 times [2025-03-09 06:48:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:55,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678652690] [2025-03-09 06:48:55,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:48:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:55,703 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:55,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:55,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:48:55,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,704 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:55,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:55,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:55,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:55,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:55,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:55,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:55,706 INFO L85 PathProgramCache]: Analyzing trace with hash 993608733, now seen corresponding path program 4 times [2025-03-09 06:48:55,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:55,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385583586] [2025-03-09 06:48:55,706 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:48:55,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:55,709 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 10 statements into 2 equivalence classes. [2025-03-09 06:48:55,714 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 9 of 10 statements. [2025-03-09 06:48:55,718 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 06:48:55,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:55,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:48:55,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385583586] [2025-03-09 06:48:55,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385583586] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:48:55,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650785663] [2025-03-09 06:48:55,799 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:48:55,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:48:55,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,800 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:48:55,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-09 06:48:55,823 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 10 statements into 2 equivalence classes. [2025-03-09 06:48:55,827 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 9 of 10 statements. [2025-03-09 06:48:55,827 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-09 06:48:55,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:55,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:48:55,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:55,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:48:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650785663] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:48:55,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:48:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-09 06:48:55,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875839582] [2025-03-09 06:48:55,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:48:55,917 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:55,917 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:55,917 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:55,917 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:55,918 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:48:55,918 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,918 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:55,918 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:55,918 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2025-03-09 06:48:55,918 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:55,918 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:55,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,925 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,928 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:55,966 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:55,966 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:48:55,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,968 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2025-03-09 06:48:55,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2025-03-09 06:48:55,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:55,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:55,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:55,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:55,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:55,997 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2025-03-09 06:48:55,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2025-03-09 06:48:56,000 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:48:56,000 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:56,123 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:48:56,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2025-03-09 06:48:56,129 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:56,129 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:56,129 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:56,129 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:56,129 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:48:56,129 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,129 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:56,129 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:56,129 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2025-03-09 06:48:56,129 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:56,129 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:56,130 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:56,140 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:56,142 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:56,169 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:56,170 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:48:56,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,171 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2025-03-09 06:48:56,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2025-03-09 06:48:56,173 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 [2025-03-09 06:48:56,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:56,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:56,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:56,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:56,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:56,184 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:48:56,184 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:56,186 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:56,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:56,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,193 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2025-03-09 06:48:56,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2025-03-09 06:48:56,195 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 [2025-03-09 06:48:56,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:56,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:56,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:56,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:56,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:56,206 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:56,208 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:56,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2025-03-09 06:48:56,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,216 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2025-03-09 06:48:56,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2025-03-09 06:48:56,218 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 [2025-03-09 06:48:56,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:56,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:56,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:56,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:56,229 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:56,229 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:56,231 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:56,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:56,238 INFO L451 LassoAnalysis]: Using template '2-nested'. [2025-03-09 06:48:56,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,240 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2025-03-09 06:48:56,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2025-03-09 06:48:56,242 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 [2025-03-09 06:48:56,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:56,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:56,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:56,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:56,252 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2025-03-09 06:48:56,253 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2025-03-09 06:48:56,253 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:56,255 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:48:56,259 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-03-09 06:48:56,259 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-03-09 06:48:56,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,261 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2025-03-09 06:48:56,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2025-03-09 06:48:56,264 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:48:56,264 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:48:56,264 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:48:56,264 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2025-03-09 06:48:56,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2025-03-09 06:48:56,271 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:48:56,272 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2025-03-09 06:48:56,272 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression [2025-03-09 06:48:56,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:56,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:56,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:56,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:56,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:56,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:56,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:56,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:56,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:56,297 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:48:56,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:56,349 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 [2025-03-09 06:48:56,349 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:56,363 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 34 transitions. Complement of second has 5 states. [2025-03-09 06:48:56,363 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 [2025-03-09 06:48:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2025-03-09 06:48:56,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2025-03-09 06:48:56,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:56,365 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-03-09 06:48:56,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:56,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:56,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:56,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:56,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:56,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:56,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:56,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:56,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:56,398 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:48:56,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:56,436 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 [2025-03-09 06:48:56,436 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:56,445 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 34 transitions. Complement of second has 5 states. [2025-03-09 06:48:56,445 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 [2025-03-09 06:48:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2025-03-09 06:48:56,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2025-03-09 06:48:56,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:56,446 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-03-09 06:48:56,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:56,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:56,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:56,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:56,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:56,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:56,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:48:56,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:48:56,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:56,478 WARN L254 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:48:56,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:56,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2025-03-09 06:48:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:56,529 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 [2025-03-09 06:48:56,530 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:56,540 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 39 transitions. Complement of second has 4 states. [2025-03-09 06:48:56,541 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 [2025-03-09 06:48:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2025-03-09 06:48:56,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2025-03-09 06:48:56,541 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:56,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2025-03-09 06:48:56,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:56,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 4 letters. [2025-03-09 06:48:56,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:56,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 39 transitions. [2025-03-09 06:48:56,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:48:56,543 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 22 states and 33 transitions. [2025-03-09 06:48:56,543 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2025-03-09 06:48:56,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2025-03-09 06:48:56,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2025-03-09 06:48:56,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:48:56,543 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 33 transitions. [2025-03-09 06:48:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2025-03-09 06:48:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2025-03-09 06:48:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 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) [2025-03-09 06:48:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2025-03-09 06:48:56,544 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2025-03-09 06:48:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:48:56,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:48:56,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:48:56,546 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:56,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:48:56,603 INFO L93 Difference]: Finished difference Result 21 states and 30 transitions. [2025-03-09 06:48:56,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2025-03-09 06:48:56,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-03-09 06:48:56,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 29 transitions. [2025-03-09 06:48:56,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2025-03-09 06:48:56,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2025-03-09 06:48:56,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 29 transitions. [2025-03-09 06:48:56,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:48:56,604 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 29 transitions. [2025-03-09 06:48:56,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 29 transitions. [2025-03-09 06:48:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2025-03-09 06:48:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 17 states have internal predecessors, (27), 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) [2025-03-09 06:48:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 27 transitions. [2025-03-09 06:48:56,605 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 27 transitions. [2025-03-09 06:48:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:48:56,608 INFO L432 stractBuchiCegarLoop]: Abstraction has 18 states and 27 transitions. [2025-03-09 06:48:56,608 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-03-09 06:48:56,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 27 transitions. [2025-03-09 06:48:56,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-03-09 06:48:56,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:48:56,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:48:56,609 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2025-03-09 06:48:56,609 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-03-09 06:48:56,609 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" [2025-03-09 06:48:56,609 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" [2025-03-09 06:48:56,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2002774840, now seen corresponding path program 5 times [2025-03-09 06:48:56,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:56,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644645253] [2025-03-09 06:48:56,609 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:48:56,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:56,613 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 7 statements into 3 equivalence classes. [2025-03-09 06:48:56,618 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:48:56,618 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 06:48:56,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:56,618 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:56,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:48:56,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:48:56,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:56,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:56,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash 33733, now seen corresponding path program 1 times [2025-03-09 06:48:56,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:56,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930090440] [2025-03-09 06:48:56,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:48:56,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:56,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:48:56,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:48:56,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:56,625 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:56,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:48:56,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:48:56,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:56,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:56,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1020421534, now seen corresponding path program 6 times [2025-03-09 06:48:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:56,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667295961] [2025-03-09 06:48:56,632 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 06:48:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:56,634 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 10 statements into 4 equivalence classes. [2025-03-09 06:48:56,637 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:48:56,637 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-09 06:48:56,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:56,637 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:56,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:48:56,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:48:56,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:56,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:56,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:56,675 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:56,675 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:56,675 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:56,675 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:56,675 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:48:56,675 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,675 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:56,676 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:56,676 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2025-03-09 06:48:56,676 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:56,676 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:56,676 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:56,678 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:56,680 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:56,733 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:56,734 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:48:56,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,736 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2025-03-09 06:48:56,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2025-03-09 06:48:56,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:56,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:56,754 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:56,755 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:48:56,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2025-03-09 06:48:56,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,762 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2025-03-09 06:48:56,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2025-03-09 06:48:56,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:56,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:56,781 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:56,781 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:48:56,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2025-03-09 06:48:56,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,788 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2025-03-09 06:48:56,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2025-03-09 06:48:56,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:56,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:56,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2025-03-09 06:48:56,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:56,816 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2025-03-09 06:48:56,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2025-03-09 06:48:56,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:48:56,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:56,994 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:48:57,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2025-03-09 06:48:57,001 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:57,001 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:57,001 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:57,001 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:57,001 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:48:57,001 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,001 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:57,001 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:57,002 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2025-03-09 06:48:57,002 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:57,003 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:57,003 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,007 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,063 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:57,063 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:48:57,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,065 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2025-03-09 06:48:57,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2025-03-09 06:48:57,068 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 [2025-03-09 06:48:57,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:57,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:57,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:57,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:57,079 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:57,079 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:57,081 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:57,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2025-03-09 06:48:57,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,089 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2025-03-09 06:48:57,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2025-03-09 06:48:57,091 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 [2025-03-09 06:48:57,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:57,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:57,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:57,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:57,102 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:57,102 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:57,105 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:57,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2025-03-09 06:48:57,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,113 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2025-03-09 06:48:57,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2025-03-09 06:48:57,116 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 [2025-03-09 06:48:57,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:57,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:57,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:57,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:57,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:57,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:48:57,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:57,130 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:48:57,134 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-03-09 06:48:57,134 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-09 06:48:57,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,136 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2025-03-09 06:48:57,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2025-03-09 06:48:57,139 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:48:57,139 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:48:57,139 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:48:57,139 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1, ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~z~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2025-03-09 06:48:57,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:57,145 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:48:57,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:57,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:48:57,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:48:57,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:57,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:57,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:57,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:48:57,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:48:57,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:57,169 WARN L254 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:48:57,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:57,190 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-03-09 06:48:57,190 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2025-03-09 06:48:57,213 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 27 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Result 36 states and 56 transitions. Complement of second has 8 states. [2025-03-09 06:48:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2025-03-09 06:48:57,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2025-03-09 06:48:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2025-03-09 06:48:57,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2025-03-09 06:48:57,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:57,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2025-03-09 06:48:57,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:57,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 6 letters. [2025-03-09 06:48:57,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:57,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 56 transitions. [2025-03-09 06:48:57,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-03-09 06:48:57,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 27 states and 40 transitions. [2025-03-09 06:48:57,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-03-09 06:48:57,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2025-03-09 06:48:57,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 40 transitions. [2025-03-09 06:48:57,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:48:57,216 INFO L218 hiAutomatonCegarLoop]: Abstraction has 27 states and 40 transitions. [2025-03-09 06:48:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 40 transitions. [2025-03-09 06:48:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2025-03-09 06:48:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.45) internal successors, (29), 19 states have internal predecessors, (29), 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) [2025-03-09 06:48:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2025-03-09 06:48:57,218 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 29 transitions. [2025-03-09 06:48:57,218 INFO L432 stractBuchiCegarLoop]: Abstraction has 20 states and 29 transitions. [2025-03-09 06:48:57,218 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-03-09 06:48:57,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 29 transitions. [2025-03-09 06:48:57,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-03-09 06:48:57,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:48:57,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:48:57,218 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2025-03-09 06:48:57,218 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-03-09 06:48:57,219 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" "assume !(main_~y~0#1 < main_~z~0#1);main_~y~0#1 := main_~x~0#1 + main_~y~0#1;" "assume main_~y~0#1 >= 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" [2025-03-09 06:48:57,219 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~y~0#1 < main_~z~0#1;main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1;" [2025-03-09 06:48:57,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1956477892, now seen corresponding path program 7 times [2025-03-09 06:48:57,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:57,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812860082] [2025-03-09 06:48:57,219 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 06:48:57,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:57,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:57,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:57,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:57,223 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:57,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:57,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:57,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:57,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:57,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 35, now seen corresponding path program 2 times [2025-03-09 06:48:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744069208] [2025-03-09 06:48:57,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:48:57,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:57,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1 statements into 1 equivalence classes. [2025-03-09 06:48:57,234 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-09 06:48:57,234 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:48:57,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:57,234 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:57,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-09 06:48:57,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-09 06:48:57,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:57,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:57,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash -521272504, now seen corresponding path program 8 times [2025-03-09 06:48:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:48:57,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908870496] [2025-03-09 06:48:57,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:48:57,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:48:57,240 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 9 statements into 2 equivalence classes. [2025-03-09 06:48:57,243 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:48:57,246 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:48:57,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:57,246 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:48:57,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:48:57,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:48:57,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:48:57,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:48:57,269 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:57,269 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:57,269 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:57,269 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:57,269 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:48:57,269 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,269 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:57,269 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:57,269 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2025-03-09 06:48:57,269 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:57,269 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:57,270 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,272 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,274 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,278 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,304 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:57,304 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:48:57,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,306 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2025-03-09 06:48:57,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2025-03-09 06:48:57,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:57,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:57,325 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:57,325 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:48:57,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2025-03-09 06:48:57,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,333 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2025-03-09 06:48:57,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2025-03-09 06:48:57,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:57,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:57,351 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:48:57,351 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:48:57,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2025-03-09 06:48:57,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,358 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2025-03-09 06:48:57,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2025-03-09 06:48:57,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:48:57,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:57,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2025-03-09 06:48:57,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,378 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2025-03-09 06:48:57,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2025-03-09 06:48:57,380 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:48:57,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:48:57,449 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:48:57,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:57,454 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:48:57,454 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:48:57,454 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:48:57,454 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:48:57,454 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:48:57,454 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,454 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:48:57,455 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:48:57,455 INFO L132 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2025-03-09 06:48:57,455 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:48:57,455 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:48:57,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:48:57,496 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:48:57,496 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:48:57,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,498 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2025-03-09 06:48:57,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2025-03-09 06:48:57,500 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 [2025-03-09 06:48:57,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:57,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:57,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:57,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:57,512 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:57,512 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:57,514 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:57,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2025-03-09 06:48:57,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,522 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2025-03-09 06:48:57,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2025-03-09 06:48:57,524 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 [2025-03-09 06:48:57,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:57,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:57,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:57,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:57,536 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:48:57,536 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:48:57,538 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:48:57,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2025-03-09 06:48:57,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,546 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2025-03-09 06:48:57,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2025-03-09 06:48:57,547 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 [2025-03-09 06:48:57,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:48:57,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:48:57,557 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:48:57,557 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:48:57,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:48:57,558 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:48:57,558 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:48:57,559 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:48:57,563 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-03-09 06:48:57,563 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-09 06:48:57,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:48:57,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:48:57,565 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2025-03-09 06:48:57,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2025-03-09 06:48:57,566 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:48:57,566 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:48:57,566 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:48:57,566 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2025-03-09 06:48:57,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2025-03-09 06:48:57,572 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:48:57,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:57,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:57,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:57,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:57,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:57,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:57,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-09 06:48:57,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-09 06:48:57,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:57,601 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:48:57,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:57,601 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 [2025-03-09 06:48:57,602 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 15 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:57,607 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 15. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 31 transitions. Complement of second has 3 states. [2025-03-09 06:48:57,608 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 [2025-03-09 06:48:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2025-03-09 06:48:57,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 8 letters. Loop has 1 letters. [2025-03-09 06:48:57,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:57,610 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-03-09 06:48:57,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:57,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:57,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:57,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:57,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:57,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:57,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-09 06:48:57,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-09 06:48:57,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:57,631 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:48:57,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:57,632 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2025-03-09 06:48:57,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 15 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:57,636 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 15. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 31 transitions. Complement of second has 3 states. [2025-03-09 06:48:57,637 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 [2025-03-09 06:48:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2025-03-09 06:48:57,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 8 letters. Loop has 1 letters. [2025-03-09 06:48:57,637 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:57,637 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-03-09 06:48:57,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:48:57,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:48:57,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:48:57,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:57,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:48:57,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:57,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-09 06:48:57,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-09 06:48:57,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:48:57,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:48:57,663 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:48:57,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:48:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:48:57,664 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-03-09 06:48:57,664 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 15 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:57,669 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 29 transitions. cyclomatic complexity: 15. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 31 transitions. Complement of second has 2 states. [2025-03-09 06:48:57,670 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 [2025-03-09 06:48:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:48:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2025-03-09 06:48:57,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2025-03-09 06:48:57,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:57,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 9 letters. Loop has 1 letters. [2025-03-09 06:48:57,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:57,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2025-03-09 06:48:57,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:48:57,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2025-03-09 06:48:57,671 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 06:48:57,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2025-03-09 06:48:57,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-09 06:48:57,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-09 06:48:57,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-09 06:48:57,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:48:57,671 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 06:48:57,671 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 06:48:57,671 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 06:48:57,671 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-03-09 06:48:57,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-03-09 06:48:57,671 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 06:48:57,671 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-03-09 06:48:57,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.03 06:48:57 BoogieIcfgContainer [2025-03-09 06:48:57,679 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-09 06:48:57,679 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:48:57,679 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:48:57,680 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:48:57,680 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:48:53" (3/4) ... [2025-03-09 06:48:57,682 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-09 06:48:57,682 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:48:57,683 INFO L158 Benchmark]: Toolchain (without parser) took 4529.81ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 41.9MB in the end (delta: 70.6MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2025-03-09 06:48:57,683 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:48:57,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 120.41ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 102.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:48:57,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.84ms. Allocated memory is still 142.6MB. Free memory was 102.4MB in the beginning and 101.5MB in the end (delta: 879.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:48:57,684 INFO L158 Benchmark]: Boogie Preprocessor took 11.07ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.6MB in the end (delta: 884.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:48:57,684 INFO L158 Benchmark]: IcfgBuilder took 177.78ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 91.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:48:57,685 INFO L158 Benchmark]: BuchiAutomizer took 4198.75ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 41.9MB in the end (delta: 48.9MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2025-03-09 06:48:57,685 INFO L158 Benchmark]: Witness Printer took 2.96ms. Allocated memory is still 142.6MB. Free memory was 41.9MB in the beginning and 41.9MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:48:57,686 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 126.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 120.41ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 102.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.84ms. Allocated memory is still 142.6MB. Free memory was 102.4MB in the beginning and 101.5MB in the end (delta: 879.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.07ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.6MB in the end (delta: 884.6kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 177.78ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 91.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4198.75ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 41.9MB in the end (delta: 48.9MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. * Witness Printer took 2.96ms. Allocated memory is still 142.6MB. Free memory was 41.9MB in the beginning and 41.9MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: IfThenElseExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function null, null and consists of 3 locations. One deterministic module has affine ranking function (((long) -1 * y) + z) and consists of 2 locations. One deterministic module has 2-nested ranking function null, null and consists of 3 locations. One deterministic module has affine ranking function ((long) x + z) and consists of 5 locations. One nondeterministic module has 2-nested ranking function null, null and consists of 3 locations. One nondeterministic module has affine ranking function (((long) -1 * y) + z) and consists of 2 locations. 1 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114 IncrementalHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 65 mSDtfsCounter, 114 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax164 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp97 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-03-09 06:48:57,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2025-03-09 06:48:57,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2025-03-09 06:48:58,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-09 06:48:58,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE