./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/b.18.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 19:02:00,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 19:02:00,196 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-02-06 19:02:00,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 19:02:00,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 19:02:00,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-06 19:02:00,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 19:02:00,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 19:02:00,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 19:02:00,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 19:02:00,221 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 19:02:00,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 19:02:00,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 19:02:00,222 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 19:02:00,222 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-06 19:02:00,222 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-06 19:02:00,222 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-06 19:02:00,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-06 19:02:00,223 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 19:02:00,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 19:02:00,224 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-06 19:02:00,224 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 19:02:00,224 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 19:02:00,224 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 19:02:00,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 19:02:00,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 19:02:00,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 19:02:00,225 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-06 19:02:00,225 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-jdk21/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 -> b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 [2025-02-06 19:02:00,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 19:02:00,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 19:02:00,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 19:02:00,455 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 19:02:00,456 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 19:02:00,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.18.c [2025-02-06 19:02:01,641 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2e99e2ce3/7508909104eb44dc81fad348309a685a/FLAG081b578ee [2025-02-06 19:02:01,847 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 19:02:01,848 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.c [2025-02-06 19:02:01,853 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2e99e2ce3/7508909104eb44dc81fad348309a685a/FLAG081b578ee [2025-02-06 19:02:02,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2e99e2ce3/7508909104eb44dc81fad348309a685a [2025-02-06 19:02:02,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 19:02:02,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 19:02:02,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 19:02:02,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 19:02:02,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 19:02:02,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35536429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02, skipping insertion in model container [2025-02-06 19:02:02,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 19:02:02,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 19:02:02,321 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 19:02:02,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 19:02:02,335 INFO L204 MainTranslator]: Completed translation [2025-02-06 19:02:02,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02 WrapperNode [2025-02-06 19:02:02,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 19:02:02,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 19:02:02,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 19:02:02,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 19:02:02,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,351 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2025-02-06 19:02:02,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 19:02:02,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 19:02:02,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 19:02:02,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 19:02:02,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,357 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,360 INFO L175 MemorySlicer]: No memory access in input program. [2025-02-06 19:02:02,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,361 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 19:02:02,363 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 19:02:02,363 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 19:02:02,363 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 19:02:02,364 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (1/1) ... [2025-02-06 19:02:02,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:02,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:02,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:02,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-06 19:02:02,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 19:02:02,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 19:02:02,462 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 19:02:02,465 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 19:02:02,525 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2025-02-06 19:02:02,525 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 19:02:02,531 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 19:02:02,532 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 19:02:02,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:02:02 BoogieIcfgContainer [2025-02-06 19:02:02,532 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 19:02:02,533 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-06 19:02:02,533 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-06 19:02:02,537 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-06 19:02:02,538 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:02:02,538 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.02 07:02:02" (1/3) ... [2025-02-06 19:02:02,539 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6481c92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 07:02:02, skipping insertion in model container [2025-02-06 19:02:02,539 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:02:02,539 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:02:02" (2/3) ... [2025-02-06 19:02:02,540 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6481c92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 07:02:02, skipping insertion in model container [2025-02-06 19:02:02,540 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:02:02,540 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:02:02" (3/3) ... [2025-02-06 19:02:02,541 INFO L363 chiAutomizerObserver]: Analyzing ICFG b.18.c [2025-02-06 19:02:02,576 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-06 19:02:02,576 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-06 19:02:02,577 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-06 19:02:02,577 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-06 19:02:02,577 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-06 19:02:02,577 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-06 19:02:02,577 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-06 19:02:02,577 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-06 19:02:02,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:02:02,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2025-02-06 19:02:02,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:02:02,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:02:02,591 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 19:02:02,591 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 19:02:02,591 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-06 19:02:02,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:02:02,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2025-02-06 19:02:02,592 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:02:02,592 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:02:02,592 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 19:02:02,592 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 19:02:02,597 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2025-02-06 19:02:02,597 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > 0 && main_~y~0#1 > 0;" "assume main_~x~0#1 > main_~y~0#1;" "assume !(main_~x~0#1 > 0);" [2025-02-06 19:02:02,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:02,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1312, now seen corresponding path program 1 times [2025-02-06 19:02:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460842766] [2025-02-06 19:02:02,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:02,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:02,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:02:02,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:02,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:02,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:02,649 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:02,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:02:02,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:02,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:02,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:02,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:02,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash 38661, now seen corresponding path program 1 times [2025-02-06 19:02:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:02,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170583631] [2025-02-06 19:02:02,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:02,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:02,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:02:02,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:02:02,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:02,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:02:02,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:02:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170583631] [2025-02-06 19:02:02,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170583631] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 19:02:02,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 19:02:02,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 19:02:02,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052519640] [2025-02-06 19:02:02,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 19:02:02,733 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-06 19:02:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:02:02,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 19:02:02,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 19:02:02,754 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2025-02-06 19:02:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:02:02,778 INFO L93 Difference]: Finished difference Result 11 states and 15 transitions. [2025-02-06 19:02:02,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2025-02-06 19:02:02,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2025-02-06 19:02:02,783 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 8 states and 11 transitions. [2025-02-06 19:02:02,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-02-06 19:02:02,784 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2025-02-06 19:02:02,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2025-02-06 19:02:02,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 19:02:02,785 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2025-02-06 19:02:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2025-02-06 19:02:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2025-02-06 19:02:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:02:02,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2025-02-06 19:02:02,804 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2025-02-06 19:02:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 19:02:02,807 INFO L432 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2025-02-06 19:02:02,807 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-06 19:02:02,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2025-02-06 19:02:02,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-02-06 19:02:02,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:02:02,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:02:02,807 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 19:02:02,807 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 19:02:02,808 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_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2025-02-06 19:02:02,808 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > 0 && main_~y~0#1 > 0;" "assume !(main_~x~0#1 > main_~y~0#1);" "assume !(main_~y~0#1 > 0);" [2025-02-06 19:02:02,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1312, now seen corresponding path program 2 times [2025-02-06 19:02:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419874279] [2025-02-06 19:02:02,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:02:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:02,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:02:02,817 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:02,817 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 19:02:02,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:02,818 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:02,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:02:02,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:02,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:02,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:02,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:02,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:02,823 INFO L85 PathProgramCache]: Analyzing trace with hash 38694, now seen corresponding path program 1 times [2025-02-06 19:02:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920386195] [2025-02-06 19:02:02,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:02,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:02:02,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:02:02,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:02,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:02:02,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:02:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920386195] [2025-02-06 19:02:02,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920386195] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 19:02:02,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 19:02:02,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 19:02:02,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258703882] [2025-02-06 19:02:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 19:02:02,846 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-06 19:02:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:02:02,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 19:02:02,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 19:02:02,847 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2025-02-06 19:02:02,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:02:02,861 INFO L93 Difference]: Finished difference Result 9 states and 12 transitions. [2025-02-06 19:02:02,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2025-02-06 19:02:02,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2025-02-06 19:02:02,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 12 transitions. [2025-02-06 19:02:02,861 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2025-02-06 19:02:02,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2025-02-06 19:02:02,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2025-02-06 19:02:02,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 19:02:02,863 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2025-02-06 19:02:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2025-02-06 19:02:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2025-02-06 19:02:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2025-02-06 19:02:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2025-02-06 19:02:02,864 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2025-02-06 19:02:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 19:02:02,865 INFO L432 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2025-02-06 19:02:02,865 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-06 19:02:02,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2025-02-06 19:02:02,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2025-02-06 19:02:02,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:02:02,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:02:02,867 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 19:02:02,867 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-06 19:02:02,867 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2025-02-06 19:02:02,867 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > 0 && main_~y~0#1 > 0;" "assume main_~x~0#1 > main_~y~0#1;" "assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~x~0#1 > 0);" [2025-02-06 19:02:02,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:02,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1312, now seen corresponding path program 3 times [2025-02-06 19:02:02,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:02,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101697355] [2025-02-06 19:02:02,867 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 19:02:02,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:02,870 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:02:02,870 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:02,871 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 19:02:02,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:02,871 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:02,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:02:02,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:02,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:02,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:02,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:02,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1198464, now seen corresponding path program 1 times [2025-02-06 19:02:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:02,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972241103] [2025-02-06 19:02:02,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:02,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:02,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:02:02,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:02:02,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:02,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:02:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:02:02,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972241103] [2025-02-06 19:02:02,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972241103] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:02:02,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125757031] [2025-02-06 19:02:02,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:02,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:02:02,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:02,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:02:02,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 19:02:02,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:02:02,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:02:02,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:02,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:02,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 19:02:02,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:02:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:02:03,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:02:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:02:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125757031] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:02:03,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:02:03,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 19:02:03,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618160471] [2025-02-06 19:02:03,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:02:03,052 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-06 19:02:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:02:03,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 19:02:03,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 19:02:03,052 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:02:03,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:02:03,079 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2025-02-06 19:02:03,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2025-02-06 19:02:03,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-02-06 19:02:03,079 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 14 transitions. [2025-02-06 19:02:03,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2025-02-06 19:02:03,080 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2025-02-06 19:02:03,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2025-02-06 19:02:03,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 19:02:03,080 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2025-02-06 19:02:03,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2025-02-06 19:02:03,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2025-02-06 19:02:03,080 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) [2025-02-06 19:02:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2025-02-06 19:02:03,081 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2025-02-06 19:02:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 19:02:03,081 INFO L432 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2025-02-06 19:02:03,081 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-06 19:02:03,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2025-02-06 19:02:03,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2025-02-06 19:02:03,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:02:03,081 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:02:03,082 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 19:02:03,082 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-06 19:02:03,082 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_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2025-02-06 19:02:03,082 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > 0 && main_~y~0#1 > 0;" "assume !(main_~x~0#1 > main_~y~0#1);" "assume main_~y~0#1 > 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume !(main_~y~0#1 > 0);" [2025-02-06 19:02:03,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1312, now seen corresponding path program 4 times [2025-02-06 19:02:03,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:03,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596105960] [2025-02-06 19:02:03,082 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 19:02:03,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:03,085 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 2 statements into 2 equivalence classes. [2025-02-06 19:02:03,085 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:03,085 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 19:02:03,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,085 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:03,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:02:03,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:03,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,086 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:03,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1199489, now seen corresponding path program 1 times [2025-02-06 19:02:03,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:03,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215896818] [2025-02-06 19:02:03,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:03,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:03,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:02:03,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:02:03,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,090 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:03,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:02:03,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:02:03,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,092 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:03,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1211935520, now seen corresponding path program 1 times [2025-02-06 19:02:03,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:03,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990479921] [2025-02-06 19:02:03,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:03,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 19:02:03,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 19:02:03,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,095 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:03,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 19:02:03,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 19:02:03,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:03,130 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:02:03,131 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:02:03,131 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:02:03,131 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:02:03,131 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:02:03,131 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,131 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:02:03,131 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:02:03,131 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration4_Loop [2025-02-06 19:02:03,131 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:02:03,131 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:02:03,140 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,146 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,149 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,200 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:02:03,200 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:02:03,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-06 19:02:03,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:02:03,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:02:03,226 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:02:03,226 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: [] [2025-02-06 19:02:03,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-06 19:02:03,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-06 19:02:03,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:02:03,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:02:03,256 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:02:03,256 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: [] [2025-02-06 19:02:03,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-06 19:02:03,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-06 19:02:03,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:02:03,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:02:03,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-06 19:02:03,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-06 19:02:03,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:02:03,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:02:03,346 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:02:03,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-06 19:02:03,352 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:02:03,352 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:02:03,352 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:02:03,352 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:02:03,352 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:02:03,352 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,352 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:02:03,352 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:02:03,352 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration4_Loop [2025-02-06 19:02:03,352 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:02:03,352 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:02:03,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,359 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,362 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,437 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:02:03,439 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:02:03,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-06 19:02:03,446 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 [2025-02-06 19:02:03,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:02:03,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:02:03,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:02:03,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:02:03,469 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 19:02:03,469 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 19:02:03,477 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:02:03,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-06 19:02:03,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-06 19:02:03,488 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 [2025-02-06 19:02:03,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:02:03,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:02:03,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:02:03,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:02:03,500 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 19:02:03,500 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 19:02:03,503 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:02:03,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-06 19:02:03,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-06 19:02:03,514 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 [2025-02-06 19:02:03,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:02:03,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:02:03,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:02:03,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:02:03,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:02:03,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:02:03,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:02:03,527 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:02:03,531 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2025-02-06 19:02:03,534 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-02-06 19:02:03,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,540 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-06 19:02:03,541 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:02:03,541 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:02:03,542 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:02:03,542 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2025-02-06 19:02:03,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-06 19:02:03,550 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:02:03,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:02:03,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:02:03,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:03,576 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 19:02:03,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:02:03,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:02:03,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:02:03,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:03,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 19:02:03,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:02:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 19:02:03,604 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 [2025-02-06 19:02:03,605 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:02:03,649 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 26 transitions. Complement of second has 6 states. [2025-02-06 19:02:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-06 19:02:03,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:02:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2025-02-06 19:02:03,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-06 19:02:03,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:02:03,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-06 19:02:03,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:02:03,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 8 letters. [2025-02-06 19:02:03,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:02:03,654 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2025-02-06 19:02:03,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-02-06 19:02:03,655 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 24 transitions. [2025-02-06 19:02:03,655 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-02-06 19:02:03,655 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2025-02-06 19:02:03,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2025-02-06 19:02:03,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:02:03,655 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 24 transitions. [2025-02-06 19:02:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2025-02-06 19:02:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2025-02-06 19:02:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 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) [2025-02-06 19:02:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2025-02-06 19:02:03,657 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2025-02-06 19:02:03,657 INFO L432 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2025-02-06 19:02:03,657 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-06 19:02:03,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2025-02-06 19:02:03,657 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-02-06 19:02:03,657 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:02:03,657 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:02:03,658 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-06 19:02:03,658 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2025-02-06 19:02:03,658 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_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~x~0#1 > 0 && main_~y~0#1 > 0;" [2025-02-06 19:02:03,658 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > main_~y~0#1;" "assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~x~0#1 > 0);" "assume main_~x~0#1 > 0 && main_~y~0#1 > 0;" [2025-02-06 19:02:03,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 40681, now seen corresponding path program 1 times [2025-02-06 19:02:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:03,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339779285] [2025-02-06 19:02:03,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:03,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:02:03,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:02:03,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,661 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:03,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:02:03,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:02:03,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:03,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,667 INFO L85 PathProgramCache]: Analyzing trace with hash 35186187, now seen corresponding path program 2 times [2025-02-06 19:02:03,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:03,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830705960] [2025-02-06 19:02:03,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:02:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:03,672 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 5 statements into 2 equivalence classes. [2025-02-06 19:02:03,674 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 5 statements. [2025-02-06 19:02:03,674 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 19:02:03,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 19:02:03,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:02:03,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830705960] [2025-02-06 19:02:03,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830705960] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 19:02:03,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 19:02:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 19:02:03,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548729359] [2025-02-06 19:02:03,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 19:02:03,689 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-06 19:02:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:02:03,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 19:02:03,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 19:02:03,690 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. cyclomatic complexity: 8 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:02:03,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:02:03,696 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2025-02-06 19:02:03,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2025-02-06 19:02:03,696 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-02-06 19:02:03,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 15 transitions. [2025-02-06 19:02:03,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-02-06 19:02:03,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2025-02-06 19:02:03,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2025-02-06 19:02:03,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:02:03,698 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2025-02-06 19:02:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2025-02-06 19:02:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2025-02-06 19:02:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:02:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2025-02-06 19:02:03,699 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2025-02-06 19:02:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 19:02:03,699 INFO L432 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2025-02-06 19:02:03,699 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-06 19:02:03,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2025-02-06 19:02:03,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-02-06 19:02:03,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:02:03,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:02:03,700 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-06 19:02:03,700 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-02-06 19:02:03,700 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~x~0#1 > 0 && main_~y~0#1 > 0;" "assume main_~x~0#1 > main_~y~0#1;" [2025-02-06 19:02:03,700 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1;" [2025-02-06 19:02:03,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1261118, now seen corresponding path program 1 times [2025-02-06 19:02:03,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:03,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299670390] [2025-02-06 19:02:03,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:03,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:03,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:02:03,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:02:03,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,706 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:03,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:02:03,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:02:03,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:03,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,708 INFO L85 PathProgramCache]: Analyzing trace with hash 34, now seen corresponding path program 1 times [2025-02-06 19:02:03,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579299743] [2025-02-06 19:02:03,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:03,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:03,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-06 19:02:03,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-06 19:02:03,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,711 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:03,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-06 19:02:03,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-06 19:02:03,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:03,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash 39094661, now seen corresponding path program 1 times [2025-02-06 19:02:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:02:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799741021] [2025-02-06 19:02:03,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:02:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:02:03,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 19:02:03,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 19:02:03,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,715 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:02:03,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 19:02:03,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 19:02:03,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:03,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:02:03,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:02:03,731 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:02:03,731 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:02:03,731 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:02:03,731 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:02:03,731 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:02:03,731 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,731 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:02:03,731 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:02:03,731 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration6_Loop [2025-02-06 19:02:03,731 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:02:03,732 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:02:03,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,736 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,773 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:02:03,773 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:02:03,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,775 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-06 19:02:03,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:02:03,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:02:03,804 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:02:03,804 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: [] [2025-02-06 19:02:03,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-06 19:02:03,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,811 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-06 19:02:03,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:02:03,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:02:03,833 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:02:03,833 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: [] [2025-02-06 19:02:03,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-06 19:02:03,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,840 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-06 19:02:03,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:02:03,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:02:03,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-06 19:02:03,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,867 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-06 19:02:03,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:02:03,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:02:03,896 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:02:03,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-06 19:02:03,901 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:02:03,901 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:02:03,901 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:02:03,901 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:02:03,901 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:02:03,901 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,901 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:02:03,901 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:02:03,901 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration6_Loop [2025-02-06 19:02:03,901 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:02:03,901 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:02:03,902 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,906 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:02:03,937 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:02:03,938 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:02:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,941 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-06 19:02:03,943 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 [2025-02-06 19:02:03,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:02:03,953 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:02:03,953 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:02:03,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:02:03,954 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 19:02:03,954 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 19:02:03,958 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:02:03,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-06 19:02:03,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,965 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-06 19:02:03,967 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 [2025-02-06 19:02:03,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:02:03,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:02:03,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:02:03,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:02:03,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:02:03,978 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:02:03,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:02:03,979 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:02:03,981 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 19:02:03,981 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-06 19:02:03,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:02:03,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:02:03,983 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:02:03,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-06 19:02:03,984 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:02:03,984 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:02:03,984 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:02:03,984 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2025-02-06 19:02:03,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-06 19:02:03,991 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:02:04,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:02:04,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:02:04,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:02:04,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:04,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:04,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 19:02:04,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:02:04,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-06 19:02:04,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-06 19:02:04,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:02:04,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:02:04,010 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 19:02:04,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:02:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:02:04,010 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 [2025-02-06 19:02:04,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2025-02-06 19:02:04,013 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11 states and 14 transitions. Complement of second has 2 states. [2025-02-06 19:02:04,013 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 [2025-02-06 19:02:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2025-02-06 19:02:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2025-02-06 19:02:04,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2025-02-06 19:02:04,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:02:04,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2025-02-06 19:02:04,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:02:04,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-06 19:02:04,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:02:04,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2025-02-06 19:02:04,014 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 19:02:04,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2025-02-06 19:02:04,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-06 19:02:04,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-06 19:02:04,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-06 19:02:04,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 19:02:04,014 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:02:04,014 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:02:04,014 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:02:04,015 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-02-06 19:02:04,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-06 19:02:04,015 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 19:02:04,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-06 19:02:04,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.02 07:02:04 BoogieIcfgContainer [2025-02-06 19:02:04,021 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-06 19:02:04,021 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 19:02:04,021 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 19:02:04,022 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 19:02:04,022 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:02:02" (3/4) ... [2025-02-06 19:02:04,023 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 19:02:04,024 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 19:02:04,024 INFO L158 Benchmark]: Toolchain (without parser) took 1812.10ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 75.9MB in the end (delta: 29.7MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2025-02-06 19:02:04,025 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory was 126.7MB in the beginning and 126.4MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:02:04,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 122.22ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 95.5MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 19:02:04,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 14.54ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 94.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:02:04,025 INFO L158 Benchmark]: Boogie Preprocessor took 11.23ms. Allocated memory is still 142.6MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:02:04,026 INFO L158 Benchmark]: IcfgBuilder took 169.76ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 84.4MB in the end (delta: 10.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 19:02:04,026 INFO L158 Benchmark]: BuchiAutomizer took 1487.81ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 76.7MB in the end (delta: 7.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2025-02-06 19:02:04,026 INFO L158 Benchmark]: Witness Printer took 2.58ms. Allocated memory is still 142.6MB. Free memory was 76.0MB in the beginning and 75.9MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:02:04,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory was 126.7MB in the beginning and 126.4MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 122.22ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 95.5MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 14.54ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 94.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.23ms. Allocated memory is still 142.6MB. Free memory is still 94.4MB. There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 169.76ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 84.4MB in the end (delta: 10.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 1487.81ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 76.7MB in the end (delta: 7.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 2.58ms. Allocated memory is still 142.6MB. Free memory was 76.0MB in the beginning and 75.9MB 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.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (4 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 40 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI4 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax197 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp88 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-06 19:02:04,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-06 19:02:04,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-06 19:02:04,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 19:02:04,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE