./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:48:37,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:48:37,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-24 23:48:37,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:48:37,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:48:37,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:48:37,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:48:37,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:48:37,330 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:48:37,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:48:37,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:48:37,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:48:37,332 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:48:37,332 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-24 23:48:37,332 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-24 23:48:37,332 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-24 23:48:37,333 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-24 23:48:37,333 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-24 23:48:37,333 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-24 23:48:37,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:48:37,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-24 23:48:37,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:48:37,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:48:37,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-24 23:48:37,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-24 23:48:37,335 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-24 23:48:37,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:48:37,335 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:48:37,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:48:37,336 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-24 23:48:37,336 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:48:37,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:48:37,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:48:37,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:48:37,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:48:37,337 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-24 23:48:37,338 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef399329f84d2482fbc6cd637d6b986ccb5018221a1a0504f889d0bed5430f95 [2024-10-24 23:48:37,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:48:37,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:48:37,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:48:37,573 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:48:37,574 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:48:37,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2024-10-24 23:48:38,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:48:39,009 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:48:39,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig1.c [2024-10-24 23:48:39,017 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bfe1433/0e0a6e4e8e384b78aedc2c6c7272ccda/FLAGd06b2f9af [2024-10-24 23:48:39,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5bfe1433/0e0a6e4e8e384b78aedc2c6c7272ccda [2024-10-24 23:48:39,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:48:39,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:48:39,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:48:39,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:48:39,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:48:39,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e29de13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39, skipping insertion in model container [2024-10-24 23:48:39,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,448 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:48:39,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:48:39,595 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:48:39,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:48:39,618 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:48:39,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39 WrapperNode [2024-10-24 23:48:39,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:48:39,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:48:39,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:48:39,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:48:39,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,628 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,641 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-10-24 23:48:39,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:48:39,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:48:39,642 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:48:39,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:48:39,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,658 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-24 23:48:39,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,659 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:48:39,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:48:39,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:48:39,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:48:39,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (1/1) ... [2024-10-24 23:48:39,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:39,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:39,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:39,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-24 23:48:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:48:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:48:39,813 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:48:39,814 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:48:39,865 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-24 23:48:39,865 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:48:39,874 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:48:39,875 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 23:48:39,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:48:39 BoogieIcfgContainer [2024-10-24 23:48:39,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:48:39,877 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-24 23:48:39,877 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-24 23:48:39,880 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-24 23:48:39,881 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:48:39,881 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 24.10 11:48:39" (1/3) ... [2024-10-24 23:48:39,882 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26f2f456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:48:39, skipping insertion in model container [2024-10-24 23:48:39,882 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:48:39,882 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:48:39" (2/3) ... [2024-10-24 23:48:39,882 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26f2f456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:48:39, skipping insertion in model container [2024-10-24 23:48:39,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:48:39,883 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:48:39" (3/3) ... [2024-10-24 23:48:39,884 INFO L332 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig1.c [2024-10-24 23:48:39,957 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-24 23:48:39,957 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-24 23:48:39,957 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-24 23:48:39,957 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-24 23:48:39,958 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-24 23:48:39,958 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-24 23:48:39,958 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-24 23:48:39,958 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-24 23:48:39,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:40,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:48:40,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:48:40,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:48:40,034 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-24 23:48:40,034 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:48:40,034 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-24 23:48:40,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:40,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:48:40,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:48:40,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:48:40,037 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-24 23:48:40,037 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:48:40,042 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 2#L19-2true [2024-10-24 23:48:40,044 INFO L747 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 7#L21-2true assume !(main_~j~0#1 <= main_~i~0#1); 4#L21-3true main_~i~0#1 := 1 + main_~i~0#1; 2#L19-2true [2024-10-24 23:48:40,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:40,050 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-24 23:48:40,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:40,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672975183] [2024-10-24 23:48:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:40,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:40,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2024-10-24 23:48:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:40,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210469114] [2024-10-24 23:48:40,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:40,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:40,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2024-10-24 23:48:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204697419] [2024-10-24 23:48:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:40,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:40,259 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:40,260 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:40,261 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:40,261 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:40,261 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:48:40,261 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,261 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:40,261 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:40,261 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2024-10-24 23:48:40,261 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:40,261 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:40,275 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,293 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,297 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,300 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,355 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:40,358 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:48:40,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:40,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:40,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-24 23:48:40,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:40,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:40,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-24 23:48:40,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:40,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:40,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-24 23:48:40,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:48:40,399 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:40,436 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:48:40,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:40,441 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:40,442 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:40,442 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:40,442 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:40,442 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:48:40,442 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,442 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:40,443 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:40,443 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration1_Loop [2024-10-24 23:48:40,443 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:40,443 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:40,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,494 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:40,498 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:48:40,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:40,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:40,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-24 23:48:40,507 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:48:40,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:40,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:48:40,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:40,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:40,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:40,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:48:40,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:48:40,523 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:48:40,529 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:48:40,530 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-24 23:48:40,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:40,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:40,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-24 23:48:40,538 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:48:40,538 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:48:40,539 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:48:40,539 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-10-24 23:48:40,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:40,554 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:48:40,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:40,585 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:48:40,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:40,599 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:48:40,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:48:40,712 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 [2024-10-24 23:48:40,714 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:40,773 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 43 transitions. Complement of second has 10 states. [2024-10-24 23:48:40,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:40,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2024-10-24 23:48:40,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 2 letters. Loop has 3 letters. [2024-10-24 23:48:40,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:40,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 5 letters. Loop has 3 letters. [2024-10-24 23:48:40,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:40,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 2 letters. Loop has 6 letters. [2024-10-24 23:48:40,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:40,781 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 43 transitions. [2024-10-24 23:48:40,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-24 23:48:40,785 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 14 states and 19 transitions. [2024-10-24 23:48:40,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-24 23:48:40,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-24 23:48:40,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2024-10-24 23:48:40,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:48:40,786 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2024-10-24 23:48:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2024-10-24 23:48:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2024-10-24 23:48:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2024-10-24 23:48:40,806 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-10-24 23:48:40,806 INFO L425 stractBuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-10-24 23:48:40,806 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-24 23:48:40,806 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2024-10-24 23:48:40,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-24 23:48:40,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:48:40,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:48:40,807 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-24 23:48:40,807 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-24 23:48:40,808 INFO L745 eck$LassoCheckResult]: Stem: 89#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 90#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 93#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 83#L21-2 [2024-10-24 23:48:40,808 INFO L747 eck$LassoCheckResult]: Loop: 83#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 91#L21-2 assume !(main_~j~0#1 <= main_~i~0#1); 86#L21-3 main_~i~0#1 := 1 + main_~i~0#1; 82#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 83#L21-2 [2024-10-24 23:48:40,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:40,808 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-10-24 23:48:40,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:40,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067147000] [2024-10-24 23:48:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,818 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:40,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1537394, now seen corresponding path program 1 times [2024-10-24 23:48:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336840339] [2024-10-24 23:48:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:40,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:40,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 1 times [2024-10-24 23:48:40,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:40,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9414278] [2024-10-24 23:48:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:40,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:40,895 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:40,895 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:40,896 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:40,896 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:40,896 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:48:40,896 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,896 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:40,896 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:40,897 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2024-10-24 23:48:40,897 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:40,897 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:40,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,902 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,906 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:40,954 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:40,954 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:48:40,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:40,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:40,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-24 23:48:40,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:40,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:40,978 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:48:40,978 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:48:40,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-24 23:48:40,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:40,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:40,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:40,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-24 23:48:40,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:40,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:41,012 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:48:41,013 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: [] [2024-10-24 23:48:41,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-24 23:48:41,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,028 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-24 23:48:41,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:41,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:41,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-24 23:48:41,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,054 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-24 23:48:41,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:48:41,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:41,145 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:48:41,151 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 [2024-10-24 23:48:41,151 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:41,151 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:41,151 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:41,151 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:41,151 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:48:41,151 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,152 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:41,152 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:41,152 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration2_Loop [2024-10-24 23:48:41,152 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:41,152 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:41,153 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,160 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,166 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,217 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:41,217 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:48:41,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,219 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-24 23:48:41,221 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:48:41,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:41,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:41,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:41,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:41,234 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-24 23:48:41,234 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-24 23:48:41,238 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:48:41,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-24 23:48:41,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,252 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-24 23:48:41,254 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:48:41,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:41,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:41,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:41,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:41,267 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-24 23:48:41,267 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-24 23:48:41,270 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:48:41,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-24 23:48:41,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,285 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-24 23:48:41,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:48:41,299 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:41,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:48:41,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:41,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:41,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:41,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:48:41,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:48:41,305 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:48:41,309 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-10-24 23:48:41,309 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-24 23:48:41,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,312 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-24 23:48:41,319 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:48:41,319 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:48:41,319 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:48:41,319 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2024-10-24 23:48:41,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:41,337 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:48:41,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:41,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:48:41,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:41,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:48:41,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 23:48:41,434 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-24 23:48:41,434 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:41,463 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.75) 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) Result 23 states and 32 transitions. Complement of second has 6 states. [2024-10-24 23:48:41,463 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 [2024-10-24 23:48:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-10-24 23:48:41,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-24 23:48:41,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:41,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2024-10-24 23:48:41,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:41,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-24 23:48:41,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:41,464 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 32 transitions. [2024-10-24 23:48:41,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-24 23:48:41,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 23 transitions. [2024-10-24 23:48:41,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-10-24 23:48:41,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-10-24 23:48:41,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2024-10-24 23:48:41,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:48:41,466 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2024-10-24 23:48:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2024-10-24 23:48:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-10-24 23:48:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 14 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) [2024-10-24 23:48:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2024-10-24 23:48:41,471 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 22 transitions. [2024-10-24 23:48:41,471 INFO L425 stractBuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2024-10-24 23:48:41,471 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-24 23:48:41,472 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2024-10-24 23:48:41,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-24 23:48:41,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:48:41,472 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:48:41,472 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-24 23:48:41,472 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-24 23:48:41,472 INFO L745 eck$LassoCheckResult]: Stem: 166#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 167#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 161#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 162#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 168#L21-2 [2024-10-24 23:48:41,472 INFO L747 eck$LassoCheckResult]: Loop: 168#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 168#L21-2 [2024-10-24 23:48:41,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:41,473 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2024-10-24 23:48:41,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:41,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697749857] [2024-10-24 23:48:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:41,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:41,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2024-10-24 23:48:41,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:41,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515933776] [2024-10-24 23:48:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:41,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:41,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2024-10-24 23:48:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:41,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191082993] [2024-10-24 23:48:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:41,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:41,529 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:41,530 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:41,530 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:41,530 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:41,530 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:48:41,530 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,530 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:41,530 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:41,530 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2024-10-24 23:48:41,530 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:41,530 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:41,531 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,540 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,547 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,590 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:41,590 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:48:41,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,592 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-24 23:48:41,595 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:41,595 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:41,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-24 23:48:41,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-24 23:48:41,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:48:41,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:41,714 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:48:41,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-24 23:48:41,719 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:41,719 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:41,720 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:41,720 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:41,720 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:48:41,720 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,720 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:41,720 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:41,720 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration3_Loop [2024-10-24 23:48:41,720 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:41,720 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:41,723 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,737 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,740 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:41,767 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:41,767 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:48:41,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,770 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-24 23:48:41,793 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:48:41,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:41,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:48:41,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:41,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:41,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:41,805 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:48:41,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:48:41,807 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 [2024-10-24 23:48:41,809 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:48:41,815 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:48:41,815 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:48:41,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:41,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:41,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:41,822 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:48:41,822 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:48:41,822 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:48:41,822 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~j~0#1 + 2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2024-10-24 23:48:41,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-24 23:48:41,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-24 23:48:41,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-24 23:48:41,836 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:48:41,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:41,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:48:41,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:41,886 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:48:41,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:48:41,887 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-24 23:48:41,891 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:41,899 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 35 transitions. Complement of second has 3 states. [2024-10-24 23:48:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2024-10-24 23:48:41,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2024-10-24 23:48:41,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:41,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 5 letters. Loop has 1 letters. [2024-10-24 23:48:41,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:41,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-24 23:48:41,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:41,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2024-10-24 23:48:41,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-24 23:48:41,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 21 states and 32 transitions. [2024-10-24 23:48:41,903 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-10-24 23:48:41,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-10-24 23:48:41,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 32 transitions. [2024-10-24 23:48:41,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:48:41,903 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 32 transitions. [2024-10-24 23:48:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 32 transitions. [2024-10-24 23:48:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-10-24 23:48:41,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2024-10-24 23:48:41,913 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 28 transitions. [2024-10-24 23:48:41,913 INFO L425 stractBuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2024-10-24 23:48:41,913 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-24 23:48:41,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 28 transitions. [2024-10-24 23:48:41,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-24 23:48:41,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:48:41,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:48:41,915 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2024-10-24 23:48:41,915 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-24 23:48:41,915 INFO L745 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 237#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 230#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 231#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 238#L21-2 assume !(main_~j~0#1 <= main_~i~0#1); 247#L21-3 main_~i~0#1 := 1 + main_~i~0#1; 245#L19-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 241#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 240#L21-2 [2024-10-24 23:48:41,915 INFO L747 eck$LassoCheckResult]: Loop: 240#L21-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := 1 + main_~j~0#1; 240#L21-2 [2024-10-24 23:48:41,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash 301503643, now seen corresponding path program 2 times [2024-10-24 23:48:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888168928] [2024-10-24 23:48:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:41,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:41,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2024-10-24 23:48:41,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:41,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786213012] [2024-10-24 23:48:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:41,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash 756678361, now seen corresponding path program 3 times [2024-10-24 23:48:41,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:48:41,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51781206] [2024-10-24 23:48:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:48:41,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:48:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:48:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:48:41,993 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:48:42,017 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:42,017 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:42,017 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:42,017 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:42,018 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:48:42,018 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,018 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:42,018 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:42,018 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2024-10-24 23:48:42,018 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:42,018 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:42,018 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:42,025 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:42,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:42,070 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:42,070 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:48:42,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:42,072 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:42,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-24 23:48:42,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:42,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:42,094 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:48:42,094 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: [] [2024-10-24 23:48:42,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:42,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:42,106 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:42,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-24 23:48:42,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:42,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:42,125 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:48:42,125 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:48:42,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-24 23:48:42,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:42,140 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:42,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-24 23:48:42,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:48:42,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:42,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:42,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:42,168 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:42,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-24 23:48:42,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:48:42,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:48:42,262 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:48:42,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-10-24 23:48:42,267 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:48:42,268 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:48:42,268 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:48:42,268 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:48:42,268 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:48:42,268 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,268 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:48:42,268 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:48:42,268 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig1.c_Iteration4_Loop [2024-10-24 23:48:42,268 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:48:42,268 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:48:42,269 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:42,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:42,277 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:48:42,308 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:48:42,308 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:48:42,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:42,311 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:42,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-24 23:48:42,314 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:48:42,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:42,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:42,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:42,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:42,325 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-24 23:48:42,325 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-24 23:48:42,327 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:48:42,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:42,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:42,340 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:42,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-24 23:48:42,341 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:48:42,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:42,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:42,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:42,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:42,353 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-24 23:48:42,353 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-24 23:48:42,356 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:48:42,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:42,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:42,369 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:42,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-24 23:48:42,371 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:48:42,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:48:42,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:48:42,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:48:42,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:48:42,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:48:42,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:48:42,382 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:48:42,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:48:42,387 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:48:42,387 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:48:42,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:48:42,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:48:42,389 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:48:42,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-24 23:48:42,390 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:48:42,390 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:48:42,390 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:48:42,391 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 2*ULTIMATE.start_main_~i~0#1 - 2*ULTIMATE.start_main_~j~0#1 + 1 Supporting invariants [] [2024-10-24 23:48:42,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:42,402 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:48:42,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:42,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:48:42,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:42,442 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:48:42,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:48:42,443 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-24 23:48:42,443 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:42,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 32 transitions. Complement of second has 3 states. [2024-10-24 23:48:42,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2024-10-24 23:48:42,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 8 letters. Loop has 1 letters. [2024-10-24 23:48:42,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:42,449 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:48:42,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:42,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:48:42,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:42,473 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:48:42,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:48:42,474 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-24 23:48:42,474 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:42,480 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 32 transitions. Complement of second has 3 states. [2024-10-24 23:48:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 7 transitions. [2024-10-24 23:48:42,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 7 transitions. Stem has 8 letters. Loop has 1 letters. [2024-10-24 23:48:42,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:42,481 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:48:42,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:48:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:42,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:48:42,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:48:42,506 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:48:42,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:48:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:48:42,507 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-10-24 23:48:42,507 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:42,518 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 28 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 29 transitions. Complement of second has 2 states. [2024-10-24 23:48:42,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-10-24 23:48:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:48:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-10-24 23:48:42,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2024-10-24 23:48:42,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:42,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 9 letters. Loop has 1 letters. [2024-10-24 23:48:42,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:42,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2024-10-24 23:48:42,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:48:42,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 29 transitions. [2024-10-24 23:48:42,520 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:48:42,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2024-10-24 23:48:42,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-24 23:48:42,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-24 23:48:42,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-24 23:48:42,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-24 23:48:42,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:48:42,520 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:48:42,520 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:48:42,520 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-24 23:48:42,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-24 23:48:42,520 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:48:42,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-24 23:48:42,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 24.10 11:48:42 BoogieIcfgContainer [2024-10-24 23:48:42,526 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-24 23:48:42,526 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:48:42,526 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:48:42,526 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:48:42,527 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:48:39" (3/4) ... [2024-10-24 23:48:42,528 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 23:48:42,528 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:48:42,529 INFO L158 Benchmark]: Toolchain (without parser) took 3105.05ms. Allocated memory is still 172.0MB. Free memory was 129.0MB in the beginning and 98.7MB in the end (delta: 30.3MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2024-10-24 23:48:42,529 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 100.7MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:42,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.23ms. Allocated memory is still 172.0MB. Free memory was 129.0MB in the beginning and 118.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 23:48:42,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.71ms. Allocated memory is still 172.0MB. Free memory was 118.0MB in the beginning and 116.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:48:42,530 INFO L158 Benchmark]: Boogie Preprocessor took 23.68ms. Allocated memory is still 172.0MB. Free memory was 116.5MB in the beginning and 114.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:48:42,530 INFO L158 Benchmark]: RCFGBuilder took 209.81ms. Allocated memory is still 172.0MB. Free memory was 114.9MB in the beginning and 106.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-24 23:48:42,530 INFO L158 Benchmark]: BuchiAutomizer took 2648.75ms. Allocated memory is still 172.0MB. Free memory was 106.1MB in the beginning and 98.7MB in the end (delta: 7.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2024-10-24 23:48:42,530 INFO L158 Benchmark]: Witness Printer took 2.21ms. Allocated memory is still 172.0MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:48:42,531 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 100.7MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.23ms. Allocated memory is still 172.0MB. Free memory was 129.0MB in the beginning and 118.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.71ms. Allocated memory is still 172.0MB. Free memory was 118.0MB in the beginning and 116.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.68ms. Allocated memory is still 172.0MB. Free memory was 116.5MB in the beginning and 114.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 209.81ms. Allocated memory is still 172.0MB. Free memory was 114.9MB in the beginning and 106.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2648.75ms. Allocated memory is still 172.0MB. Free memory was 106.1MB in the beginning and 98.7MB in the end (delta: 7.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Witness Printer took 2.21ms. Allocated memory is still 172.0MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function ((long) -1 * i) and consists of 6 locations. One deterministic module has affine ranking function (((long) -1 * i) + n) and consists of 4 locations. One deterministic module has affine ranking function ((((long) -2 * j) + ((long) 2 * i)) + 1) and consists of 2 locations. One nondeterministic module has affine ranking function ((((long) -2 * j) + ((long) 2 * i)) + 1) and consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 29 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax194 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf110 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 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! [2024-10-24 23:48:42,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:42,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-24 23:48:42,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE