./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/DivMinus2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/DivMinus2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 804e8d646f3136915195a4e5e9f5153cc3c1cd2abf96df3f09c683a14a27e4de --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:49:29,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:49:29,338 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-03-09 06:49:29,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:49:29,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:49:29,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-09 06:49:29,354 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:49:29,355 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:49:29,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:49:29,355 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:49:29,355 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:49:29,355 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:49:29,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:49:29,356 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:49:29,356 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-09 06:49:29,357 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-09 06:49:29,357 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-09 06:49:29,357 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-09 06:49:29,357 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-09 06:49:29,357 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-09 06:49:29,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:49:29,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-09 06:49:29,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:49:29,358 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:49:29,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:49:29,358 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-09 06:49:29,358 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804e8d646f3136915195a4e5e9f5153cc3c1cd2abf96df3f09c683a14a27e4de [2025-03-09 06:49:29,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:49:29,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:49:29,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:49:29,584 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:49:29,585 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:49:29,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2025-03-09 06:49:30,734 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce82fa392/9eae1fe1bcc7436ea6be6ecf68475558/FLAGfa0470fae [2025-03-09 06:49:30,917 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:49:30,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2025-03-09 06:49:30,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce82fa392/9eae1fe1bcc7436ea6be6ecf68475558/FLAGfa0470fae [2025-03-09 06:49:31,294 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce82fa392/9eae1fe1bcc7436ea6be6ecf68475558 [2025-03-09 06:49:31,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:49:31,297 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:49:31,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:49:31,298 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:49:31,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:49:31,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c32b084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31, skipping insertion in model container [2025-03-09 06:49:31,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,311 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:49:31,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:49:31,399 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:49:31,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:49:31,415 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:49:31,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31 WrapperNode [2025-03-09 06:49:31,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:49:31,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:49:31,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:49:31,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:49:31,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,432 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2025-03-09 06:49:31,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:49:31,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:49:31,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:49:31,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:49:31,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,441 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-09 06:49:31,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,442 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:49:31,449 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:49:31,449 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:49:31,449 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:49:31,450 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (1/1) ... [2025-03-09 06:49:31,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:31,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:31,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:31,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-03-09 06:49:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:49:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:49:31,555 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:49:31,556 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:49:31,614 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-03-09 06:49:31,615 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:49:31,620 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:49:31,621 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:49:31,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:49:31 BoogieIcfgContainer [2025-03-09 06:49:31,622 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:49:31,623 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-09 06:49:31,623 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-09 06:49:31,627 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-09 06:49:31,628 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:49:31,628 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.03 06:49:31" (1/3) ... [2025-03-09 06:49:31,629 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@280266b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 06:49:31, skipping insertion in model container [2025-03-09 06:49:31,629 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:49:31,630 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:49:31" (2/3) ... [2025-03-09 06:49:31,630 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@280266b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 06:49:31, skipping insertion in model container [2025-03-09 06:49:31,630 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 06:49:31,631 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:49:31" (3/3) ... [2025-03-09 06:49:31,632 INFO L363 chiAutomizerObserver]: Analyzing ICFG DivMinus2.c [2025-03-09 06:49:31,679 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-09 06:49:31,680 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-09 06:49:31,680 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-09 06:49:31,680 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-09 06:49:31,680 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-09 06:49:31,680 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-09 06:49:31,680 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-09 06:49:31,680 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-09 06:49:31,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:31,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-03-09 06:49:31,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:49:31,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:49:31,699 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 06:49:31,700 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:49:31,700 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-09 06:49:31,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:31,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-03-09 06:49:31,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:49:31,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:49:31,702 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 06:49:31,702 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:49:31,708 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~res~0#1 := 0;" [2025-03-09 06:49:31,709 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0;main_~ytmp~0#1 := main_~y~0#1;" "assume !(0 != main_~ytmp~0#1);main_~res~0#1 := 1 + main_~res~0#1;" [2025-03-09 06:49:31,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1248, now seen corresponding path program 1 times [2025-03-09 06:49:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:31,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600352100] [2025-03-09 06:49:31,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:49:31,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:31,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:31,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:31,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:31,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:31,776 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:31,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:31,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:31,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:31,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:31,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:31,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:31,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1181, now seen corresponding path program 1 times [2025-03-09 06:49:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:31,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715676267] [2025-03-09 06:49:31,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:49:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:31,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:31,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:31,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:31,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:31,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:49:31,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715676267] [2025-03-09 06:49:31,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715676267] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:49:31,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:49:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:49:31,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114668925] [2025-03-09 06:49:31,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:49:31,864 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-03-09 06:49:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:49:31,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:49:31,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:49:31,885 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:49:31,902 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2025-03-09 06:49:31,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2025-03-09 06:49:31,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:49:31,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 7 states and 9 transitions. [2025-03-09 06:49:31,907 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2025-03-09 06:49:31,907 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2025-03-09 06:49:31,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2025-03-09 06:49:31,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:49:31,908 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2025-03-09 06:49:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2025-03-09 06:49:31,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2025-03-09 06:49:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2025-03-09 06:49:31,926 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2025-03-09 06:49:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:49:31,929 INFO L432 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2025-03-09 06:49:31,929 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-03-09 06:49:31,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2025-03-09 06:49:31,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-03-09 06:49:31,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:49:31,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:49:31,930 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 06:49:31,930 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-03-09 06:49:31,930 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, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~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;main_~res~0#1 := 0;" [2025-03-09 06:49:31,930 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0;main_~ytmp~0#1 := main_~y~0#1;" "assume 0 != main_~ytmp~0#1;" "assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume !(0 != main_~ytmp~0#1);main_~res~0#1 := 1 + main_~res~0#1;" [2025-03-09 06:49:31,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1248, now seen corresponding path program 2 times [2025-03-09 06:49:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:31,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803683086] [2025-03-09 06:49:31,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:49:31,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:31,939 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:31,940 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:31,940 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:49:31,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:31,940 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:31,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:31,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:31,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:31,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:31,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:31,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1137951, now seen corresponding path program 1 times [2025-03-09 06:49:31,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:31,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575530535] [2025-03-09 06:49:31,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:49:31,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:31,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 06:49:31,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 06:49:31,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:31,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:31,957 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:31,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 06:49:31,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 06:49:31,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:31,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:31,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:31,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1152768638, now seen corresponding path program 1 times [2025-03-09 06:49:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:31,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856057897] [2025-03-09 06:49:31,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:49:31,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:31,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:49:31,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:49:31,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:31,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:31,970 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:31,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:49:31,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:49:31,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:31,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:31,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:32,069 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:49:32,070 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:49:32,070 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:49:32,070 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:49:32,070 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:49:32,070 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,070 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:49:32,070 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:49:32,070 INFO L132 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2025-03-09 06:49:32,070 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:49:32,070 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:49:32,080 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,087 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,093 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,098 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,102 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,108 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,178 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:49:32,178 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:49:32,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-03-09 06:49:32,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:32,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,206 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:32,206 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:49:32,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-03-09 06:49:32,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-03-09 06:49:32,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:32,218 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,236 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:32,236 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:49:32,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:32,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,246 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-03-09 06:49:32,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:32,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-03-09 06:49:32,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-03-09 06:49:32,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:49:32,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,305 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:32,305 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0#1=0} Honda state: {ULTIMATE.start_main_~res~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0#1=1}, {ULTIMATE.start_main_~res~0#1=5}, {ULTIMATE.start_main_~res~0#1=-5}] Lambdas: [1, 2, 1] Nus: [0, 1] [2025-03-09 06:49:32,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-03-09 06:49:32,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-03-09 06:49:32,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:32,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,326 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:32,326 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=1} Honda state: {ULTIMATE.start_main_~y~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:49:32,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-03-09 06:49:32,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-03-09 06:49:32,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:32,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-03-09 06:49:32,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,353 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-03-09 06:49:32,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:49:32,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,380 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:49:32,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-03-09 06:49:32,384 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:49:32,385 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:49:32,385 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:49:32,385 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:49:32,385 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:49:32,385 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,385 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:49:32,385 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:49:32,385 INFO L132 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2025-03-09 06:49:32,385 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:49:32,385 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:49:32,386 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,390 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,392 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,396 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,399 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,407 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,463 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:49:32,466 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:49:32,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,468 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-03-09 06:49:32,472 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:32,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:32,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:49:32,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:32,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:32,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:32,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:49:32,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:49:32,491 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:49:32,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:32,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,499 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-03-09 06:49:32,502 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:32,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:32,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:32,513 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:32,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:32,517 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:49:32,517 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:49:32,521 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:49:32,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:32,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-03-09 06:49:32,532 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:32,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:32,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:32,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:32,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:32,544 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:49:32,544 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:49:32,547 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:49:32,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-03-09 06:49:32,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,555 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-03-09 06:49:32,558 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:32,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:32,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:49:32,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:32,569 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:32,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:32,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:49:32,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:49:32,571 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:49:32,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-03-09 06:49:32,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,579 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-03-09 06:49:32,581 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:32,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:32,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:49:32,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:32,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:32,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:32,593 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:49:32,593 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:49:32,594 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:49:32,598 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-09 06:49:32,600 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-09 06:49:32,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,604 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-03-09 06:49:32,609 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:49:32,609 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:49:32,609 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:49:32,609 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 [] [2025-03-09 06:49:32,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:32,617 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:49:32,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:32,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:32,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:32,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:32,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:32,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:49:32,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:32,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 06:49:32,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 06:49:32,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:32,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:32,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:49:32,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:32,709 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-03-09 06:49:32,710 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:32,738 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 22 states and 31 transitions. Complement of second has 7 states. [2025-03-09 06:49:32,739 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 [2025-03-09 06:49:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2025-03-09 06:49:32,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2025-03-09 06:49:32,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:32,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2025-03-09 06:49:32,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:32,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2025-03-09 06:49:32,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:32,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 31 transitions. [2025-03-09 06:49:32,744 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2025-03-09 06:49:32,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 17 states and 24 transitions. [2025-03-09 06:49:32,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2025-03-09 06:49:32,745 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2025-03-09 06:49:32,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 24 transitions. [2025-03-09 06:49:32,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:49:32,745 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 24 transitions. [2025-03-09 06:49:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 24 transitions. [2025-03-09 06:49:32,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2025-03-09 06:49:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2025-03-09 06:49:32,747 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 22 transitions. [2025-03-09 06:49:32,747 INFO L432 stractBuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2025-03-09 06:49:32,747 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-03-09 06:49:32,747 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2025-03-09 06:49:32,747 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2025-03-09 06:49:32,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:49:32,747 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:49:32,748 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2025-03-09 06:49:32,748 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:49:32,748 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, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~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;main_~res~0#1 := 0;" "assume main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0;main_~ytmp~0#1 := main_~y~0#1;" "assume 0 != main_~ytmp~0#1;" "assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume 0 != main_~ytmp~0#1;" [2025-03-09 06:49:32,748 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume 0 != main_~ytmp~0#1;" [2025-03-09 06:49:32,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1152768641, now seen corresponding path program 1 times [2025-03-09 06:49:32,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:32,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626496524] [2025-03-09 06:49:32,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:49:32,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:32,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:49:32,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:49:32,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:32,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:32,754 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:32,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:49:32,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:49:32,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:32,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:32,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:32,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1091, now seen corresponding path program 1 times [2025-03-09 06:49:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421865104] [2025-03-09 06:49:32,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:49:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:32,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:32,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:32,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:32,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:32,763 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:32,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:32,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:32,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:32,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:32,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:32,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:32,766 INFO L85 PathProgramCache]: Analyzing trace with hash -290898237, now seen corresponding path program 2 times [2025-03-09 06:49:32,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:32,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213080855] [2025-03-09 06:49:32,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:49:32,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:32,770 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 8 statements into 2 equivalence classes. [2025-03-09 06:49:32,773 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:49:32,773 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:49:32,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:32,774 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:32,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:49:32,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:49:32,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:32,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:32,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:32,819 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:49:32,820 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:49:32,820 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:49:32,820 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:49:32,820 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:49:32,820 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,820 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:49:32,820 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:49:32,820 INFO L132 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2025-03-09 06:49:32,820 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:49:32,820 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:49:32,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,836 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,841 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:32,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:32,907 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:49:32,907 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:49:32,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-03-09 06:49:32,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:32,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,931 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:32,931 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:49:32,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:32,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,938 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-03-09 06:49:32,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:32,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-03-09 06:49:32,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,958 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-03-09 06:49:32,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:49:32,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:32,983 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:32,983 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=-6}, {ULTIMATE.start_main_~x~0#1=5}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [1, 1, 3] Nus: [0, 0] [2025-03-09 06:49:32,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-03-09 06:49:32,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:32,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:32,991 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:32,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-03-09 06:49:32,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:32,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,012 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:33,013 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:49:33,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-03-09 06:49:33,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,020 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-03-09 06:49:33,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:33,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-03-09 06:49:33,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,039 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-03-09 06:49:33,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:49:33,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,083 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:49:33,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-03-09 06:49:33,087 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:49:33,087 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:49:33,087 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:49:33,087 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:49:33,088 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:49:33,088 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,088 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:49:33,088 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:49:33,088 INFO L132 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2025-03-09 06:49:33,088 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:49:33,088 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:49:33,089 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,091 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,094 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,099 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,138 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:49:33,138 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:49:33,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,140 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-03-09 06:49:33,143 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:33,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:33,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:33,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:33,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:33,156 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-03-09 06:49:33,156 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-03-09 06:49:33,159 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:49:33,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:33,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,168 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-03-09 06:49:33,170 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:33,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:33,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:49:33,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:33,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:33,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:33,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:49:33,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:49:33,184 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:49:33,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-03-09 06:49:33,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,192 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-03-09 06:49:33,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:33,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:33,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:49:33,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:33,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:33,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:33,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:49:33,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:49:33,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:49:33,213 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-09 06:49:33,213 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-09 06:49:33,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,215 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-03-09 06:49:33,217 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:49:33,217 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:49:33,217 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:49:33,217 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0#1) = 1*ULTIMATE.start_main_~ytmp~0#1 Supporting invariants [] [2025-03-09 06:49:33,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-03-09 06:49:33,224 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:49:33,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:33,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:49:33,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:49:33,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:33,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:33,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:49:33,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:33,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:33,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:33,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:33,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:33,254 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:49:33,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:33,271 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-03-09 06:49:33,271 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:33,287 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 39 transitions. Complement of second has 5 states. [2025-03-09 06:49:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-09 06:49:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2025-03-09 06:49:33,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2025-03-09 06:49:33,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:33,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2025-03-09 06:49:33,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:33,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2025-03-09 06:49:33,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:33,290 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 39 transitions. [2025-03-09 06:49:33,290 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2025-03-09 06:49:33,291 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 37 transitions. [2025-03-09 06:49:33,291 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2025-03-09 06:49:33,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2025-03-09 06:49:33,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2025-03-09 06:49:33,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:49:33,291 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 37 transitions. [2025-03-09 06:49:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2025-03-09 06:49:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2025-03-09 06:49:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2025-03-09 06:49:33,292 INFO L240 hiAutomatonCegarLoop]: Abstraction has 23 states and 33 transitions. [2025-03-09 06:49:33,292 INFO L432 stractBuchiCegarLoop]: Abstraction has 23 states and 33 transitions. [2025-03-09 06:49:33,292 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-03-09 06:49:33,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 33 transitions. [2025-03-09 06:49:33,295 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2025-03-09 06:49:33,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:49:33,295 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:49:33,296 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2025-03-09 06:49:33,296 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:49:33,296 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, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~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;main_~res~0#1 := 0;" "assume main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0;main_~ytmp~0#1 := main_~y~0#1;" "assume 0 != main_~ytmp~0#1;" "assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume 0 != main_~ytmp~0#1;" "assume !(main_~ytmp~0#1 > 0);main_~ytmp~0#1 := 1 + main_~ytmp~0#1;main_~x~0#1 := 1 + main_~x~0#1;" [2025-03-09 06:49:33,296 INFO L754 eck$LassoCheckResult]: Loop: "assume 0 != main_~ytmp~0#1;" "assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1;" [2025-03-09 06:49:33,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:33,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1376089508, now seen corresponding path program 1 times [2025-03-09 06:49:33,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:33,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138210345] [2025-03-09 06:49:33,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:49:33,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:33,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:49:33,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:49:33,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:33,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:33,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:49:33,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138210345] [2025-03-09 06:49:33,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138210345] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:49:33,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:49:33,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:49:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128277053] [2025-03-09 06:49:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:49:33,343 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-09 06:49:33,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1151, now seen corresponding path program 2 times [2025-03-09 06:49:33,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:33,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240801527] [2025-03-09 06:49:33,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:49:33,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:33,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:33,346 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:33,346 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:49:33,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:33,346 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:33,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:33,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:33,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:33,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:33,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:33,373 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:49:33,373 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:49:33,373 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:49:33,373 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:49:33,373 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:49:33,373 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,373 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:49:33,373 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:49:33,373 INFO L132 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2025-03-09 06:49:33,373 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:49:33,374 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:49:33,374 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,379 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,381 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,387 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,420 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:49:33,420 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:49:33,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,422 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-03-09 06:49:33,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:33,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-03-09 06:49:33,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,442 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-03-09 06:49:33,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:49:33,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,466 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:49:33,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-03-09 06:49:33,470 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:49:33,470 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:49:33,470 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:49:33,470 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:49:33,470 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:49:33,470 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,470 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:49:33,470 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:49:33,470 INFO L132 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2025-03-09 06:49:33,470 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:49:33,470 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:49:33,471 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,480 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,489 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,529 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:49:33,529 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:49:33,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,531 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-03-09 06:49:33,533 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:33,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:33,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:49:33,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:33,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:33,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:33,543 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:49:33,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:49:33,545 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:49:33,548 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-03-09 06:49:33,548 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-03-09 06:49:33,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,550 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-03-09 06:49:33,552 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:49:33,552 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:49:33,552 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:49:33,553 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0#1) = 1*ULTIMATE.start_main_~ytmp~0#1 Supporting invariants [] [2025-03-09 06:49:33,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-03-09 06:49:33,560 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:49:33,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:33,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:49:33,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:49:33,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:33,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:33,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:49:33,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:33,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:33,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:33,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:33,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:33,585 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:49:33,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:33,587 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2025-03-09 06:49:33,587 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 33 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:33,596 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 33 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 42 transitions. Complement of second has 5 states. [2025-03-09 06:49:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-09 06:49:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2025-03-09 06:49:33,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2025-03-09 06:49:33,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:33,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2025-03-09 06:49:33,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:33,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2025-03-09 06:49:33,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:33,597 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 42 transitions. [2025-03-09 06:49:33,598 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2025-03-09 06:49:33,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 42 transitions. [2025-03-09 06:49:33,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2025-03-09 06:49:33,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2025-03-09 06:49:33,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 42 transitions. [2025-03-09 06:49:33,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:49:33,598 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 42 transitions. [2025-03-09 06:49:33,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 42 transitions. [2025-03-09 06:49:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2025-03-09 06:49:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2025-03-09 06:49:33,602 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27 states and 41 transitions. [2025-03-09 06:49:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:49:33,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:49:33,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:49:33,603 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:33,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:49:33,614 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2025-03-09 06:49:33,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2025-03-09 06:49:33,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:49:33,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 18 transitions. [2025-03-09 06:49:33,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2025-03-09 06:49:33,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2025-03-09 06:49:33,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2025-03-09 06:49:33,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-03-09 06:49:33,617 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2025-03-09 06:49:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2025-03-09 06:49:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2025-03-09 06:49:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2025-03-09 06:49:33,618 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2025-03-09 06:49:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:49:33,621 INFO L432 stractBuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2025-03-09 06:49:33,621 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-03-09 06:49:33,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2025-03-09 06:49:33,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-03-09 06:49:33,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 06:49:33,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 06:49:33,621 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2025-03-09 06:49:33,621 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 06:49:33,622 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~res~0#1 := 0;" "assume main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0;main_~ytmp~0#1 := main_~y~0#1;" "assume 0 != main_~ytmp~0#1;" "assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume !(0 != main_~ytmp~0#1);main_~res~0#1 := 1 + main_~res~0#1;" "assume main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0;main_~ytmp~0#1 := main_~y~0#1;" "assume 0 != main_~ytmp~0#1;" "assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume 0 != main_~ytmp~0#1;" [2025-03-09 06:49:33,622 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1;" "assume 0 != main_~ytmp~0#1;" [2025-03-09 06:49:33,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:33,622 INFO L85 PathProgramCache]: Analyzing trace with hash -383012577, now seen corresponding path program 2 times [2025-03-09 06:49:33,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:33,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845493374] [2025-03-09 06:49:33,622 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:49:33,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:33,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-03-09 06:49:33,630 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:49:33,631 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:49:33,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:33,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:49:33,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845493374] [2025-03-09 06:49:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845493374] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:49:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348980631] [2025-03-09 06:49:33,705 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:49:33,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:49:33,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,706 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-09 06:49:33,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-03-09 06:49:33,729 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:49:33,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:49:33,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:33,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 06:49:33,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:33,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:49:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:33,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348980631] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:49:33,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:49:33,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2025-03-09 06:49:33,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632895568] [2025-03-09 06:49:33,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:49:33,809 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-09 06:49:33,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:33,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1091, now seen corresponding path program 3 times [2025-03-09 06:49:33,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:49:33,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532203706] [2025-03-09 06:49:33,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:49:33,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:49:33,811 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:33,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:33,812 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:49:33,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:33,812 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 06:49:33,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:33,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:33,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:33,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 06:49:33,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 06:49:33,834 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:49:33,834 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:49:33,834 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:49:33,834 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:49:33,834 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 06:49:33,834 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,834 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:49:33,834 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:49:33,834 INFO L132 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2025-03-09 06:49:33,834 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:49:33,834 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:49:33,835 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,837 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,840 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,848 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:33,884 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:49:33,884 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 06:49:33,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,887 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-03-09 06:49:33,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:33,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,905 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:33,905 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-03-09 06:49:33,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-03-09 06:49:33,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,912 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-03-09 06:49:33,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:33,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2025-03-09 06:49:33,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,931 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-03-09 06:49:33,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:49:33,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,956 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 06:49:33,956 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=-6}, {ULTIMATE.start_main_~x~0#1=5}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [1, 1, 3] Nus: [0, 0] [2025-03-09 06:49:33,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2025-03-09 06:49:33,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,963 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2025-03-09 06:49:33,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 06:49:33,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:33,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2025-03-09 06:49:33,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:33,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:33,983 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:33,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2025-03-09 06:49:33,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 06:49:33,984 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 06:49:34,028 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 06:49:34,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:34,032 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 06:49:34,032 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 06:49:34,032 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 06:49:34,032 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 06:49:34,032 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 06:49:34,032 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:34,032 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 06:49:34,032 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 06:49:34,032 INFO L132 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2025-03-09 06:49:34,032 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 06:49:34,032 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 06:49:34,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:34,038 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:34,044 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:34,046 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 06:49:34,077 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 06:49:34,077 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 06:49:34,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:34,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:34,080 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:34,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2025-03-09 06:49:34,081 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:34,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:34,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:49:34,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:34,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:34,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:34,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:49:34,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:49:34,093 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 06:49:34,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2025-03-09 06:49:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:34,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:34,100 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:34,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2025-03-09 06:49:34,101 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-03-09 06:49:34,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 06:49:34,110 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 06:49:34,110 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 06:49:34,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 06:49:34,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 06:49:34,111 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 06:49:34,111 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 06:49:34,113 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 06:49:34,114 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-03-09 06:49:34,114 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-03-09 06:49:34,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 06:49:34,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:49:34,117 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-09 06:49:34,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2025-03-09 06:49:34,118 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 06:49:34,118 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 06:49:34,118 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 06:49:34,118 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0#1) = 1*ULTIMATE.start_main_~ytmp~0#1 Supporting invariants [] [2025-03-09 06:49:34,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2025-03-09 06:49:34,124 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 06:49:34,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:34,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:49:34,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:49:34,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:34,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:34,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:49:34,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:34,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:34,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:34,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:34,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:34,156 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:49:34,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:34,169 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-03-09 06:49:34,169 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:34,175 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 20 transitions. Complement of second has 5 states. [2025-03-09 06:49:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-09 06:49:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2025-03-09 06:49:34,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 2 letters. [2025-03-09 06:49:34,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:34,176 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-03-09 06:49:34,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-03-09 06:49:34,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-03-09 06:49:34,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:34,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:34,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:49:34,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:49:34,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:34,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:34,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:49:34,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:34,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:34,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:34,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:34,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:34,236 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:49:34,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:34,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:34,250 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2025-03-09 06:49:34,250 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:34,265 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 19 transitions. Complement of second has 5 states. [2025-03-09 06:49:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-09 06:49:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2025-03-09 06:49:34,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 10 letters. Loop has 2 letters. [2025-03-09 06:49:34,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:34,266 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-03-09 06:49:34,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:49:34,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:49:34,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:49:34,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:34,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:34,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-09 06:49:34,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:34,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 06:49:34,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 06:49:34,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:49:34,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:49:34,294 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:49:34,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:49:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:49:34,307 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-03-09 06:49:34,308 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:34,315 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 21 transitions. Complement of second has 4 states. [2025-03-09 06:49:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-03-09 06:49:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2025-03-09 06:49:34,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 2 letters. [2025-03-09 06:49:34,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:34,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 12 letters. Loop has 2 letters. [2025-03-09 06:49:34,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:34,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 4 letters. [2025-03-09 06:49:34,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 06:49:34,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2025-03-09 06:49:34,319 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 06:49:34,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-09 06:49:34,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-09 06:49:34,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:49:34,319 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:49:34,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:49:34,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:49:34,319 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:49:34,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 06:49:34,319 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 06:49:34,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-09 06:49:34,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-09 06:49:34,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 06:49:34,319 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 06:49:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 06:49:34,320 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 06:49:34,320 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-03-09 06:49:34,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-03-09 06:49:34,320 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 06:49:34,320 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-03-09 06:49:34,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.03 06:49:34 BoogieIcfgContainer [2025-03-09 06:49:34,329 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-09 06:49:34,329 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:49:34,329 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:49:34,329 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:49:34,330 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:49:31" (3/4) ... [2025-03-09 06:49:34,331 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-09 06:49:34,332 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:49:34,332 INFO L158 Benchmark]: Toolchain (without parser) took 3035.18ms. Allocated memory is still 167.8MB. Free memory was 133.2MB in the beginning and 119.5MB in the end (delta: 13.7MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2025-03-09 06:49:34,333 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:49:34,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 118.06ms. Allocated memory is still 167.8MB. Free memory was 133.2MB in the beginning and 123.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:49:34,333 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.37ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 122.5MB in the end (delta: 873.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:49:34,334 INFO L158 Benchmark]: Boogie Preprocessor took 15.78ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 121.7MB in the end (delta: 409.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:49:34,334 INFO L158 Benchmark]: IcfgBuilder took 173.24ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 112.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:49:34,334 INFO L158 Benchmark]: BuchiAutomizer took 2706.26ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 119.6MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:49:34,334 INFO L158 Benchmark]: Witness Printer took 2.69ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 119.5MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:49:34,335 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 118.06ms. Allocated memory is still 167.8MB. Free memory was 133.2MB in the beginning and 123.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.37ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 122.5MB in the end (delta: 873.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.78ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 121.7MB in the end (delta: 409.9kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 173.24ms. Allocated memory is still 167.8MB. Free memory was 121.3MB in the beginning and 112.0MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2706.26ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 119.6MB in the end (delta: -8.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.69ms. Allocated memory is still 167.8MB. Free memory was 119.6MB in the beginning and 119.5MB 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One nondeterministic module has affine ranking function ytmp and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 4 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 40 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax168 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp82 dnf100 smp100 tf113 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-03-09 06:49:34,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-03-09 06:49:34,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE