./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.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 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:05:47,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:05:48,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-23 02:05:48,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:05:48,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:05:48,072 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:05:48,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:05:48,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:05:48,073 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:05:48,074 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:05:48,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:05:48,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:05:48,076 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:05:48,076 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-23 02:05:48,077 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-23 02:05:48,078 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-23 02:05:48,078 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-23 02:05:48,078 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-23 02:05:48,078 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-23 02:05:48,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:05:48,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-23 02:05:48,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:05:48,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:05:48,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-23 02:05:48,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-23 02:05:48,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-23 02:05:48,082 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:05:48,083 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:05:48,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:05:48,083 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-23 02:05:48,083 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:05:48,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:05:48,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:05:48,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:05:48,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:05:48,084 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-23 02:05:48,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2024-11-23 02:05:48,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:05:48,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:05:48,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:05:48,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:05:48,296 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:05:48,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2024-11-23 02:05:49,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:05:49,757 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:05:49,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2024-11-23 02:05:49,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd340019/58619033e6cd4c23ad1774504467d446/FLAG61450c920 [2024-11-23 02:05:49,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acd340019/58619033e6cd4c23ad1774504467d446 [2024-11-23 02:05:49,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:05:49,781 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:05:49,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:05:49,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:05:49,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:05:49,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:49,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef36290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49, skipping insertion in model container [2024-11-23 02:05:49,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:49,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:05:49,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:05:49,956 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:05:49,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:05:49,980 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:05:49,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49 WrapperNode [2024-11-23 02:05:49,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:05:49,982 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:05:49,982 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:05:49,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:05:49,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:49,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,004 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-11-23 02:05:50,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:05:50,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:05:50,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:05:50,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:05:50,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,022 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-23 02:05:50,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:05:50,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:05:50,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:05:50,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:05:50,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (1/1) ... [2024-11-23 02:05:50,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:50,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:50,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:50,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-23 02:05:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:05:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:05:50,167 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:05:50,169 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:05:50,208 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-23 02:05:50,209 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:05:50,216 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:05:50,217 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 02:05:50,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:50 BoogieIcfgContainer [2024-11-23 02:05:50,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:05:50,218 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-23 02:05:50,218 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-23 02:05:50,221 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-23 02:05:50,222 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:05:50,222 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:05:49" (1/3) ... [2024-11-23 02:05:50,248 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72f5e465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:05:50, skipping insertion in model container [2024-11-23 02:05:50,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:05:50,249 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:05:49" (2/3) ... [2024-11-23 02:05:50,249 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72f5e465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:05:50, skipping insertion in model container [2024-11-23 02:05:50,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:05:50,250 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:50" (3/3) ... [2024-11-23 02:05:50,251 INFO L332 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2024-11-23 02:05:50,328 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-23 02:05:50,329 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-23 02:05:50,329 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-23 02:05:50,329 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-23 02:05:50,329 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-23 02:05:50,329 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-23 02:05:50,329 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-23 02:05:50,330 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-23 02:05:50,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:50,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-23 02:05:50,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:50,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:50,351 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:05:50,351 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-23 02:05:50,351 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-23 02:05:50,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:50,353 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-23 02:05:50,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:50,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:50,354 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:05:50,354 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-23 02:05:50,360 INFO L745 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~k~0#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~j~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 10#L20true assume main_~k~0#1 >= 1;main_~i~0#1 := 0; 8#L22-2true [2024-11-23 02:05:50,360 INFO L747 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 3#L24-2true assume !(main_~j~0#1 <= main_~i~0#1); 9#L24-3true main_~i~0#1 := 1 + main_~i~0#1; 8#L22-2true [2024-11-23 02:05:50,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-23 02:05:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:50,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602500224] [2024-11-23 02:05:50,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:50,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:50,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:50,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:50,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:50,465 INFO L85 PathProgramCache]: Analyzing trace with hash 43923, now seen corresponding path program 1 times [2024-11-23 02:05:50,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:50,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367513338] [2024-11-23 02:05:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:50,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:50,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:50,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash 889513810, now seen corresponding path program 1 times [2024-11-23 02:05:50,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:50,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318306387] [2024-11-23 02:05:50,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:50,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:05:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318306387] [2024-11-23 02:05:50,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318306387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:05:50,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:05:50,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 02:05:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011866891] [2024-11-23 02:05:50,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:05:50,669 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:50,670 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:50,670 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:50,670 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:50,670 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:05:50,671 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:50,671 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:50,671 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:50,671 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2024-11-23 02:05:50,671 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:50,672 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:50,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:50,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:50,709 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:50,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:50,796 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:50,797 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:05:50,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:50,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:50,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-23 02:05:50,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:50,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:50,835 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:50,836 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:50,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-23 02:05:50,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:50,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:50,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:50,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-23 02:05:50,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:50,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:50,872 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:50,873 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:50,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-23 02:05:50,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:50,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:50,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:50,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-23 02:05:50,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:50,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:50,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-23 02:05:50,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:50,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:50,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:50,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-23 02:05:50,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:05:50,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:50,960 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:05:50,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:50,971 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:50,971 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:50,971 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:50,971 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:50,972 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:05:50,972 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:50,972 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:50,972 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:50,972 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2024-11-23 02:05:50,972 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:50,972 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:50,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:50,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:50,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,002 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,075 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:51,083 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:05:51,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:51,087 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:51,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-23 02:05:51,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:51,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:51,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:51,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:51,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:51,110 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:05:51,111 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:05:51,130 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:51,141 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 [2024-11-23 02:05:51,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:51,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:51,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-23 02:05:51,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:51,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:51,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:51,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:51,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:51,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:51,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:51,162 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:51,165 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:05:51,168 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:05:51,168 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:05:51,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:51,191 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:51,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-23 02:05:51,198 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:05:51,198 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:05:51,198 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:05:51,199 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 [] [2024-11-23 02:05:51,207 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 [2024-11-23 02:05:51,212 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:05:51,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:51,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 02:05:51,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:51,260 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:05:51,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:51,331 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 [2024-11-23 02:05:51,334 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:51,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-23 02:05:51,443 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 48 transitions. Complement of second has 10 states. [2024-11-23 02:05:51,445 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 [2024-11-23 02:05:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2024-11-23 02:05:51,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 3 letters. Loop has 3 letters. [2024-11-23 02:05:51,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:51,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-23 02:05:51,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:51,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 3 letters. Loop has 6 letters. [2024-11-23 02:05:51,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:51,452 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2024-11-23 02:05:51,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-23 02:05:51,456 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 15 states and 20 transitions. [2024-11-23 02:05:51,457 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-23 02:05:51,457 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-11-23 02:05:51,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2024-11-23 02:05:51,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:05:51,458 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2024-11-23 02:05:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2024-11-23 02:05:51,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-11-23 02:05:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2024-11-23 02:05:51,478 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2024-11-23 02:05:51,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:05:51,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:05:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:05:51,480 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:05:51,498 INFO L93 Difference]: Finished difference Result 12 states and 15 transitions. [2024-11-23 02:05:51,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2024-11-23 02:05:51,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-23 02:05:51,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2024-11-23 02:05:51,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-23 02:05:51,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-23 02:05:51,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-11-23 02:05:51,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-23 02:05:51,501 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-23 02:05:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-11-23 02:05:51,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-11-23 02:05:51,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-11-23 02:05:51,502 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-23 02:05:51,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:05:51,503 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-23 02:05:51,503 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-23 02:05:51,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-11-23 02:05:51,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-23 02:05:51,503 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:51,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:51,504 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:05:51,504 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-23 02:05:51,504 INFO L745 eck$LassoCheckResult]: Stem: 123#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 124#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_#t~nondet3#1, main_~k~0#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~j~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 127#L20 assume main_~k~0#1 >= 1;main_~i~0#1 := 0; 126#L22-2 [2024-11-23 02:05:51,504 INFO L747 eck$LassoCheckResult]: Loop: 126#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 121#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 122#L24-2 assume !(main_~j~0#1 <= main_~i~0#1); 125#L24-3 main_~i~0#1 := 1 + main_~i~0#1; 126#L22-2 [2024-11-23 02:05:51,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:51,505 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 2 times [2024-11-23 02:05:51,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:51,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770882783] [2024-11-23 02:05:51,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:05:51,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:51,508 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:05:51,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:05:51,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:51,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:51,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:51,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1363376, now seen corresponding path program 1 times [2024-11-23 02:05:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:51,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095230003] [2024-11-23 02:05:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:51,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:51,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:51,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:51,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126097, now seen corresponding path program 1 times [2024-11-23 02:05:51,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:51,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873419223] [2024-11-23 02:05:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:51,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:51,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:51,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:51,555 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:51,555 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:51,555 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:51,555 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:51,555 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:05:51,555 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,555 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:51,555 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:51,555 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2024-11-23 02:05:51,555 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:51,555 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:51,556 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,559 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,567 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,601 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:51,601 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:05:51,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:51,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-23 02:05:51,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:51,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:51,628 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:51,628 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:51,638 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 [2024-11-23 02:05:51,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:51,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:51,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-23 02:05:51,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:51,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:51,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-23 02:05:51,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:51,668 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:51,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-23 02:05:51,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:05:51,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:51,720 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:05:51,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:51,732 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:51,732 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:51,732 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:51,733 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:51,733 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:05:51,733 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,733 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:51,733 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:51,733 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2024-11-23 02:05:51,733 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:51,733 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:51,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,745 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,747 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,750 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:51,786 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:51,787 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:05:51,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:51,789 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:51,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:51,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-23 02:05:51,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:51,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:51,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:51,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:51,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:51,806 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:51,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:51,808 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:05:51,811 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:05:51,811 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-23 02:05:51,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:51,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:51,813 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:51,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-23 02:05:51,817 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:05:51,817 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:05:51,817 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:05:51,817 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~k~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2024-11-23 02:05:51,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-23 02:05:51,832 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:05:51,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:51,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 02:05:51,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:51,856 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:05:51,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:51,895 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2024-11-23 02:05:51,895 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:51,933 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 18 states and 23 transitions. Complement of second has 10 states. [2024-11-23 02:05:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2024-11-23 02:05:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:51,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 12 transitions. [2024-11-23 02:05:51,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-23 02:05:51,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:51,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-23 02:05:51,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:51,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-23 02:05:51,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:51,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2024-11-23 02:05:51,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:05:51,935 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 17 states and 22 transitions. [2024-11-23 02:05:51,935 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-23 02:05:51,935 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-23 02:05:51,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2024-11-23 02:05:51,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:05:51,936 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-23 02:05:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2024-11-23 02:05:51,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-23 02:05:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-11-23 02:05:51,937 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-11-23 02:05:51,937 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-11-23 02:05:51,937 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-23 02:05:51,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2024-11-23 02:05:51,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:05:51,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:51,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:51,938 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-23 02:05:51,938 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2024-11-23 02:05:51,938 INFO L745 eck$LassoCheckResult]: Stem: 201#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 202#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~k~0#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~j~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 207#L20 assume main_~k~0#1 >= 1;main_~i~0#1 := 0; 208#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 197#L24-2 [2024-11-23 02:05:51,939 INFO L747 eck$LassoCheckResult]: Loop: 197#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 198#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 209#L24-2 assume !(main_~j~0#1 <= main_~i~0#1); 203#L24-3 main_~i~0#1 := 1 + main_~i~0#1; 204#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 197#L24-2 [2024-11-23 02:05:51,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash 925612, now seen corresponding path program 1 times [2024-11-23 02:05:51,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:51,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339105533] [2024-11-23 02:05:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:51,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:51,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:51,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:51,946 INFO L85 PathProgramCache]: Analyzing trace with hash 50576359, now seen corresponding path program 2 times [2024-11-23 02:05:51,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:51,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885060535] [2024-11-23 02:05:51,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:05:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:51,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:05:51,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:05:51,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:51,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:51,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash -440553700, now seen corresponding path program 2 times [2024-11-23 02:05:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:51,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313709260] [2024-11-23 02:05:51,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:05:51,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:51,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:05:51,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:05:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:05:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313709260] [2024-11-23 02:05:52,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313709260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:05:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651045445] [2024-11-23 02:05:52,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:05:52,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:05:52,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:52,004 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 02:05:52,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 02:05:52,040 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 02:05:52,040 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 02:05:52,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:05:52,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:52,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:05:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:52,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651045445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:05:52,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:05:52,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-23 02:05:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552779271] [2024-11-23 02:05:52,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:05:52,173 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:52,174 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:52,174 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:52,174 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:52,174 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:05:52,174 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,174 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:52,174 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:52,174 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Loop [2024-11-23 02:05:52,174 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:52,174 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:52,175 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,184 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,187 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,221 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:52,222 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:05:52,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:52,224 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) [2024-11-23 02:05:52,228 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 [2024-11-23 02:05:52,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:52,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:52,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:52,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:52,250 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:52,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-23 02:05:52,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:05:52,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:52,426 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:05:52,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:52,434 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:52,434 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:52,434 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:52,434 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:52,434 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:05:52,434 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,434 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:52,434 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:52,434 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Loop [2024-11-23 02:05:52,434 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:52,434 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:52,439 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,456 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,514 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:52,514 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:05:52,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:52,518 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:52,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-23 02:05:52,520 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:52,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:52,530 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:52,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:52,530 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:52,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:52,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:52,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:52,539 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:05:52,542 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:05:52,543 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-23 02:05:52,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:52,545 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:52,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-23 02:05:52,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:05:52,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:05:52,548 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:05:52,548 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 [] [2024-11-23 02:05:52,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:52,559 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:05:52,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:52,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 02:05:52,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:52,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:05:52,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 02:05:52,608 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-23 02:05:52,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:52,630 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 35 transitions. Complement of second has 6 states. [2024-11-23 02:05:52,631 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 [2024-11-23 02:05:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-11-23 02:05:52,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 5 letters. [2024-11-23 02:05:52,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:52,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 5 letters. [2024-11-23 02:05:52,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:52,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 10 letters. [2024-11-23 02:05:52,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:52,632 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 35 transitions. [2024-11-23 02:05:52,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:05:52,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 19 states and 26 transitions. [2024-11-23 02:05:52,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-23 02:05:52,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2024-11-23 02:05:52,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2024-11-23 02:05:52,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:05:52,634 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2024-11-23 02:05:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2024-11-23 02:05:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-11-23 02:05:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2024-11-23 02:05:52,636 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 25 transitions. [2024-11-23 02:05:52,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:05:52,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 02:05:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 02:05:52,642 INFO L87 Difference]: Start difference. First operand 18 states and 25 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:05:52,675 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2024-11-23 02:05:52,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 30 transitions. [2024-11-23 02:05:52,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:05:52,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 21 states and 27 transitions. [2024-11-23 02:05:52,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-23 02:05:52,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-23 02:05:52,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2024-11-23 02:05:52,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:05:52,677 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2024-11-23 02:05:52,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2024-11-23 02:05:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-11-23 02:05:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-23 02:05:52,679 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-23 02:05:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 02:05:52,680 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-23 02:05:52,680 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-23 02:05:52,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-11-23 02:05:52,681 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-23 02:05:52,681 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:52,681 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:52,681 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-23 02:05:52,681 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-23 02:05:52,682 INFO L745 eck$LassoCheckResult]: Stem: 390#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 391#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_#t~nondet3#1, main_~k~0#1, main_~i~0#1, main_~j~0#1, main_~n~0#1;havoc main_~k~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~n~0#1;havoc main_#t~nondet0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~j~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 396#L20 assume main_~k~0#1 >= 1;main_~i~0#1 := 0; 392#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 393#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 388#L24-2 assume !(main_~j~0#1 <= main_~i~0#1); 389#L24-3 main_~i~0#1 := 1 + main_~i~0#1; 400#L22-2 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 0; 401#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 387#L24-2 [2024-11-23 02:05:52,682 INFO L747 eck$LassoCheckResult]: Loop: 387#L24-2 assume !!(main_~j~0#1 <= main_~i~0#1);main_~j~0#1 := main_~j~0#1 + main_~k~0#1; 387#L24-2 [2024-11-23 02:05:52,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 3 times [2024-11-23 02:05:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:52,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119295272] [2024-11-23 02:05:52,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 02:05:52,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:52,694 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-23 02:05:52,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:05:52,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:52,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:52,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2024-11-23 02:05:52,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:52,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451245304] [2024-11-23 02:05:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:52,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:52,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:52,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash -773943299, now seen corresponding path program 4 times [2024-11-23 02:05:52,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:52,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699577130] [2024-11-23 02:05:52,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 02:05:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:52,713 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 02:05:52,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:05:52,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:52,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:52,779 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:52,779 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:52,779 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:52,779 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:52,779 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:05:52,779 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,779 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:52,779 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:52,779 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2024-11-23 02:05:52,780 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:52,780 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:52,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,789 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,790 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,792 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,794 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,795 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,797 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,799 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:52,842 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:52,842 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:05:52,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:52,847 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:52,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-23 02:05:52,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:52,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:52,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:52,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:52,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:52,876 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:52,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-23 02:05:52,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:05:52,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:53,007 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:05:53,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-23 02:05:53,013 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:53,013 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:53,013 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:53,013 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:53,013 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:05:53,013 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,014 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:53,014 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:53,014 INFO L132 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2024-11-23 02:05:53,014 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:53,014 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:53,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,019 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,026 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,028 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,039 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:53,083 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:53,083 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:05:53,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,085 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-23 02:05:53,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:53,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:53,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:53,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:53,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:53,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:53,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:53,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:53,102 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:53,108 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 [2024-11-23 02:05:53,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,109 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-23 02:05:53,112 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:53,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:53,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:53,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:53,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:53,124 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:05:53,125 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:05:53,127 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:53,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-23 02:05:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,141 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-23 02:05:53,143 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:53,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:53,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:53,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:53,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:53,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:53,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:53,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:53,155 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:53,160 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 [2024-11-23 02:05:53,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,170 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-23 02:05:53,172 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:53,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:53,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:53,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:53,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:53,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:53,182 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:53,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:53,184 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:53,189 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 [2024-11-23 02:05:53,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,191 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-23 02:05:53,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:53,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:53,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:53,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:53,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:53,208 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:05:53,208 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:05:53,211 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:53,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:53,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,220 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-23 02:05:53,222 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:53,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:53,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:53,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:53,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:53,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:53,233 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:53,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:53,234 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:53,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:53,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-23 02:05:53,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,265 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-23 02:05:53,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-23 02:05:53,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:53,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:53,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:53,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:53,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:53,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:53,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:53,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:53,297 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:53,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:53,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,331 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-23 02:05:53,334 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-23 02:05:53,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:53,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:53,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:53,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:53,348 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-23 02:05:53,348 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-23 02:05:53,352 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:05:53,358 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2024-11-23 02:05:53,358 INFO L444 ModelExtractionUtils]: 4 out of 13 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-11-23 02:05:53,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:53,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:53,360 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:53,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-23 02:05:53,362 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:05:53,373 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2024-11-23 02:05:53,373 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:05:53,373 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 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [1*ULTIMATE.start_main_~i~0#1 - 1 >= 0, 1*ULTIMATE.start_main_~k~0#1 - 1 >= 0] [2024-11-23 02:05:53,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:53,391 INFO L156 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2024-11-23 02:05:53,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:53,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:05:53,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:53,494 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:05:53,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:53,495 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2024-11-23 02:05:53,495 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:53,509 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 26 transitions. Complement of second has 4 states. [2024-11-23 02:05:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 2 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-23 02:05:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2024-11-23 02:05:53,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 9 letters. Loop has 1 letters. [2024-11-23 02:05:53,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:53,511 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:05:53,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:53,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:05:53,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:53,589 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:05:53,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:53,590 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.3 stem predicates 1 loop predicates [2024-11-23 02:05:53,590 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:53,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 26 transitions. Complement of second has 4 states. [2024-11-23 02:05:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 2 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-23 02:05:53,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2024-11-23 02:05:53,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 9 letters. Loop has 1 letters. [2024-11-23 02:05:53,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:53,606 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:05:53,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:53,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:05:53,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:53,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:53,694 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 02:05:53,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:53,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:53,695 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2024-11-23 02:05:53,695 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:53,744 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 26 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 28 transitions. Complement of second has 5 states. [2024-11-23 02:05:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 0 non-accepting loop states 2 accepting loop states [2024-11-23 02:05:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2024-11-23 02:05:53,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 9 letters. Loop has 1 letters. [2024-11-23 02:05:53,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:53,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 1 letters. [2024-11-23 02:05:53,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:53,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 9 letters. Loop has 2 letters. [2024-11-23 02:05:53,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:53,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2024-11-23 02:05:53,747 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:05:53,747 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2024-11-23 02:05:53,747 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-23 02:05:53,747 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-23 02:05:53,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-23 02:05:53,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-23 02:05:53,747 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:05:53,747 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:05:53,747 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:05:53,747 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-23 02:05:53,747 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-23 02:05:53,747 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:05:53,748 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-23 02:05:53,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:05:53 BoogieIcfgContainer [2024-11-23 02:05:53,757 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-23 02:05:53,757 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 02:05:53,757 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 02:05:53,757 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 02:05:53,758 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:50" (3/4) ... [2024-11-23 02:05:53,759 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-23 02:05:53,760 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 02:05:53,760 INFO L158 Benchmark]: Toolchain (without parser) took 3979.23ms. Allocated memory was 151.0MB in the beginning and 213.9MB in the end (delta: 62.9MB). Free memory was 79.4MB in the beginning and 141.3MB in the end (delta: -61.9MB). Peak memory consumption was 850.9kB. Max. memory is 16.1GB. [2024-11-23 02:05:53,761 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 151.0MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:05:53,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.41ms. Allocated memory is still 151.0MB. Free memory was 79.1MB in the beginning and 67.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-23 02:05:53,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.62ms. Allocated memory is still 151.0MB. Free memory was 67.8MB in the beginning and 66.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:05:53,761 INFO L158 Benchmark]: Boogie Preprocessor took 33.48ms. Allocated memory is still 151.0MB. Free memory was 66.4MB in the beginning and 64.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:05:53,762 INFO L158 Benchmark]: RCFGBuilder took 177.73ms. Allocated memory is still 151.0MB. Free memory was 64.9MB in the beginning and 55.6MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 02:05:53,762 INFO L158 Benchmark]: BuchiAutomizer took 3538.80ms. Allocated memory was 151.0MB in the beginning and 213.9MB in the end (delta: 62.9MB). Free memory was 55.4MB in the beginning and 141.3MB in the end (delta: -85.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:05:53,762 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 213.9MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:05:53,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 151.0MB. Free memory is still 102.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.41ms. Allocated memory is still 151.0MB. Free memory was 79.1MB in the beginning and 67.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.62ms. Allocated memory is still 151.0MB. Free memory was 67.8MB in the beginning and 66.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.48ms. Allocated memory is still 151.0MB. Free memory was 66.4MB in the beginning and 64.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 177.73ms. Allocated memory is still 151.0MB. Free memory was 64.9MB in the beginning and 55.6MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3538.80ms. Allocated memory was 151.0MB in the beginning and 213.9MB in the end (delta: 62.9MB). Free memory was 55.4MB in the beginning and 141.3MB in the end (delta: -85.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 213.9MB. Free memory is still 141.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 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) + k) and consists of 6 locations. One deterministic module has affine ranking function (((long) -1 * i) + n) and consists of 4 locations. One nondeterministic module has affine ranking function (((long) -2 * j) + ((long) 3 * i)) and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 3/4 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 29 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax156 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf105 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 45ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-23 02:05:53,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-11-23 02:05:53,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:54,188 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