./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-restricted-15/b.18.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 b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:55:27,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:55:27,827 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-12 20:55:27,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:55:27,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:55:27,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:55:27,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:55:27,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:55:27,863 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:55:27,864 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:55:27,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:55:27,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:55:27,865 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:55:27,867 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-12 20:55:27,867 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-12 20:55:27,867 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-12 20:55:27,868 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-12 20:55:27,868 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-12 20:55:27,868 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-12 20:55:27,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:55:27,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-12 20:55:27,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:55:27,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:55:27,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-12 20:55:27,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-12 20:55:27,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-12 20:55:27,870 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:55:27,871 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:55:27,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:55:27,871 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-12 20:55:27,871 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:55:27,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:55:27,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:55:27,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:55:27,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:55:27,873 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-12 20:55:27,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 [2024-11-12 20:55:28,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:55:28,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:55:28,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:55:28,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:55:28,177 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:55:28,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.18.c [2024-11-12 20:55:29,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:55:29,815 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:55:29,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.c [2024-11-12 20:55:29,821 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486355a9c/7102f8f43a3f4273a25aab109b4a9e62/FLAG7fa212901 [2024-11-12 20:55:29,833 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/486355a9c/7102f8f43a3f4273a25aab109b4a9e62 [2024-11-12 20:55:29,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:55:29,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:55:29,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:55:29,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:55:29,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:55:29,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:55:29" (1/1) ... [2024-11-12 20:55:29,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129718e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:29, skipping insertion in model container [2024-11-12 20:55:29,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:55:29" (1/1) ... [2024-11-12 20:55:29,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:55:30,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:55:30,034 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:55:30,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:55:30,062 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:55:30,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30 WrapperNode [2024-11-12 20:55:30,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:55:30,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:55:30,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:55:30,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:55:30,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,089 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-11-12 20:55:30,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:55:30,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:55:30,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:55:30,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:55:30,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,108 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-12 20:55:30,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,109 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:55:30,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:55:30,118 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:55:30,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:55:30,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (1/1) ... [2024-11-12 20:55:30,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:30,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:30,153 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) [2024-11-12 20:55:30,156 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 [2024-11-12 20:55:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:55:30,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:55:30,268 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:55:30,270 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:55:30,319 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-12 20:55:30,319 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:55:30,330 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:55:30,330 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 20:55:30,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:55:30 BoogieIcfgContainer [2024-11-12 20:55:30,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:55:30,332 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-12 20:55:30,332 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-12 20:55:30,337 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-12 20:55:30,338 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:55:30,339 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 08:55:29" (1/3) ... [2024-11-12 20:55:30,340 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40e4e8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:55:30, skipping insertion in model container [2024-11-12 20:55:30,341 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:55:30,341 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:55:30" (2/3) ... [2024-11-12 20:55:30,341 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40e4e8f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:55:30, skipping insertion in model container [2024-11-12 20:55:30,342 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:55:30,342 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:55:30" (3/3) ... [2024-11-12 20:55:30,344 INFO L332 chiAutomizerObserver]: Analyzing ICFG b.18.c [2024-11-12 20:55:30,437 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2024-11-12 20:55:30,438 INFO L302 stractBuchiCegarLoop]: Hoare is None [2024-11-12 20:55:30,438 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-12 20:55:30,438 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-12 20:55:30,438 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-12 20:55:30,438 INFO L306 stractBuchiCegarLoop]: Difference is false [2024-11-12 20:55:30,438 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-12 20:55:30,439 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-12 20:55:30,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:30,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-12 20:55:30,490 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:55:30,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:55:30,497 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:55:30,497 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:55:30,498 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-12 20:55:30,498 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:30,499 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-12 20:55:30,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:55:30,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:55:30,500 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:55:30,500 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:55:30,506 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:55:30,507 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0);" "assume main_~x~0#1 > main_~y~0#1;" "assume !(main_~x~0#1 > 0);" [2024-11-12 20:55:30,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-12 20:55:30,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:30,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246677068] [2024-11-12 20:55:30,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:30,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:30,609 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:30,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:30,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:30,632 INFO L85 PathProgramCache]: Analyzing trace with hash 40817, now seen corresponding path program 1 times [2024-11-12 20:55:30,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:30,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876731079] [2024-11-12 20:55:30,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:30,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:30,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:55:30,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876731079] [2024-11-12 20:55:30,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876731079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:55:30,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919615793] [2024-11-12 20:55:30,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:30,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:55:30,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:30,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:55:30,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:55:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:30,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:55:30,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:55:30,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:55:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919615793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:55:30,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:55:30,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1, 1, 1] total 1 [2024-11-12 20:55:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27985390] [2024-11-12 20:55:30,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:55:30,810 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:55:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:55:30,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:55:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:55:30,844 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:55:30,869 INFO L93 Difference]: Finished difference Result 12 states and 16 transitions. [2024-11-12 20:55:30,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 16 transitions. [2024-11-12 20:55:30,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:55:30,874 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 11 transitions. [2024-11-12 20:55:30,875 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-12 20:55:30,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-12 20:55:30,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-11-12 20:55:30,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:55:30,876 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-12 20:55:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-11-12 20:55:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-11-12 20:55:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2024-11-12 20:55:30,894 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2024-11-12 20:55:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:55:30,899 INFO L426 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2024-11-12 20:55:30,899 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-12 20:55:30,899 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2024-11-12 20:55:30,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:55:30,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:55:30,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:55:30,900 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:55:30,901 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:55:30,901 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:55:30,901 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0);" "assume !(main_~x~0#1 > main_~y~0#1);" "assume !(main_~y~0#1 > 0);" [2024-11-12 20:55:30,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-12 20:55:30,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:30,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954924887] [2024-11-12 20:55:30,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:30,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:30,906 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:30,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:30,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash 41265, now seen corresponding path program 1 times [2024-11-12 20:55:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:30,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879656587] [2024-11-12 20:55:30,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:30,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:30,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:55:30,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879656587] [2024-11-12 20:55:30,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879656587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:55:30,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096430195] [2024-11-12 20:55:30,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:30,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:55:30,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:30,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:55:30,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:55:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:30,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:55:30,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:55:30,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:55:30,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096430195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:55:30,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:55:30,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1, 1, 1] total 1 [2024-11-12 20:55:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012422722] [2024-11-12 20:55:30,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:55:30,993 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:55:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:55:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:55:30,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:55:30,994 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:31,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:55:31,010 INFO L93 Difference]: Finished difference Result 9 states and 12 transitions. [2024-11-12 20:55:31,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2024-11-12 20:55:31,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-12 20:55:31,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 12 transitions. [2024-11-12 20:55:31,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-12 20:55:31,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-11-12 20:55:31,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2024-11-12 20:55:31,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:55:31,012 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-11-12 20:55:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2024-11-12 20:55:31,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2024-11-12 20:55:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2024-11-12 20:55:31,013 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-12 20:55:31,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:55:31,015 INFO L426 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-12 20:55:31,015 INFO L333 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-12 20:55:31,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2024-11-12 20:55:31,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:55:31,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:55:31,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:55:31,016 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:55:31,016 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-12 20:55:31,016 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:55:31,016 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0);" "assume main_~x~0#1 > main_~y~0#1;" "assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~x~0#1 > 0);" [2024-11-12 20:55:31,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-12 20:55:31,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217433334] [2024-11-12 20:55:31,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:31,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:31,024 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:31,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:31,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1265410, now seen corresponding path program 1 times [2024-11-12 20:55:31,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:31,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142159712] [2024-11-12 20:55:31,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:31,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:31,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:55:31,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142159712] [2024-11-12 20:55:31,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142159712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:55:31,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308536056] [2024-11-12 20:55:31,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:31,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:55:31,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:55:31,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:55:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:31,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:55:31,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:55:31,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:55:31,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308536056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:55:31,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:55:31,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-12 20:55:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817348189] [2024-11-12 20:55:31,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:55:31,201 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:55:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:55:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:55:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:55:31,202 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:31,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:55:31,242 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2024-11-12 20:55:31,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2024-11-12 20:55:31,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-11-12 20:55:31,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 14 transitions. [2024-11-12 20:55:31,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-11-12 20:55:31,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-12 20:55:31,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2024-11-12 20:55:31,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:55:31,245 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-12 20:55:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2024-11-12 20:55:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2024-11-12 20:55:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2024-11-12 20:55:31,248 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-11-12 20:55:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:55:31,250 INFO L426 stractBuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-11-12 20:55:31,250 INFO L333 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-12 20:55:31,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2024-11-12 20:55:31,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-12 20:55:31,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:55:31,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:55:31,251 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:55:31,251 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-12 20:55:31,252 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:55:31,252 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0);" "assume !(main_~x~0#1 > main_~y~0#1);" "assume !!(main_~y~0#1 > 0);main_~y~0#1 := main_~y~0#1 - 1;" "assume !(main_~y~0#1 > 0);" [2024-11-12 20:55:31,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-12 20:55:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:31,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758572873] [2024-11-12 20:55:31,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:31,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:31,260 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:31,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:31,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1279312, now seen corresponding path program 1 times [2024-11-12 20:55:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:31,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811651753] [2024-11-12 20:55:31,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:31,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:31,274 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:31,279 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:31,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash 889706514, now seen corresponding path program 1 times [2024-11-12 20:55:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:31,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628743510] [2024-11-12 20:55:31,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:31,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:31,287 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:31,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:31,357 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:55:31,359 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:55:31,360 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:55:31,360 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:55:31,360 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-12 20:55:31,360 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,360 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:55:31,360 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:55:31,360 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration4_Loop [2024-11-12 20:55:31,361 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:55:31,361 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:55:31,376 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:31,386 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:31,392 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:31,467 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:55:31,467 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-12 20:55:31,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,472 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) [2024-11-12 20:55:31,474 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 [2024-11-12 20:55:31,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:55:31,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:55:31,507 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:55:31,507 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: [] [2024-11-12 20:55:31,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-12 20:55:31,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,526 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) [2024-11-12 20:55:31,528 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 [2024-11-12 20:55:31,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:55:31,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:55:31,548 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:55:31,549 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: [] [2024-11-12 20:55:31,564 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 [2024-11-12 20:55:31,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,566 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) [2024-11-12 20:55:31,567 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 [2024-11-12 20:55:31,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:55:31,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:55:31,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-12 20:55:31,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,604 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) [2024-11-12 20:55:31,605 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 [2024-11-12 20:55:31,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-12 20:55:31,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:55:31,680 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-12 20:55:31,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-12 20:55:31,685 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:55:31,685 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:55:31,685 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:55:31,685 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:55:31,685 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-12 20:55:31,686 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,686 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:55:31,686 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:55:31,686 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration4_Loop [2024-11-12 20:55:31,686 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:55:31,686 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:55:31,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:31,691 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:31,694 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:31,752 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:55:31,755 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-12 20:55:31,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,758 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) [2024-11-12 20:55:31,760 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 [2024-11-12 20:55:31,761 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 [2024-11-12 20:55:31,771 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:55:31,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:55:31,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:55:31,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:55:31,776 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:55:31,776 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:55:31,781 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:55:31,792 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 [2024-11-12 20:55:31,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,794 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) [2024-11-12 20:55:31,795 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 [2024-11-12 20:55:31,796 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 [2024-11-12 20:55:31,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:55:31,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:55:31,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:55:31,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:55:31,809 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:55:31,809 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:55:31,815 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:55:31,830 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 [2024-11-12 20:55:31,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,833 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) [2024-11-12 20:55:31,834 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 [2024-11-12 20:55:31,836 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 [2024-11-12 20:55:31,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:55:31,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:55:31,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:55:31,850 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:55:31,850 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:55:31,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 20:55:31,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:55:31,857 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-12 20:55:31,864 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2024-11-12 20:55:31,865 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-11-12 20:55:31,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:31,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:31,869 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) [2024-11-12 20:55:31,870 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 [2024-11-12 20:55:31,872 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-12 20:55:31,872 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-12 20:55:31,872 INFO L474 LassoAnalysis]: Proved termination. [2024-11-12 20:55:31,872 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2024-11-12 20:55:31,887 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 [2024-11-12 20:55:31,892 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-12 20:55:31,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:31,916 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:55:31,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:55:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:31,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:55:31,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:55:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 20:55:31,939 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 [2024-11-12 20:55:31,940 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:31,986 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 26 transitions. Complement of second has 6 states. [2024-11-12 20:55:31,988 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 [2024-11-12 20:55:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2024-11-12 20:55:31,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-12 20:55:31,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:55:31,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 4 letters. [2024-11-12 20:55:31,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:55:31,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 8 letters. [2024-11-12 20:55:31,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:55:31,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2024-11-12 20:55:31,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:55:31,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 24 transitions. [2024-11-12 20:55:31,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-12 20:55:31,996 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-12 20:55:31,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2024-11-12 20:55:31,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:55:31,997 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 24 transitions. [2024-11-12 20:55:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2024-11-12 20:55:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2024-11-12 20:55:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2024-11-12 20:55:31,999 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2024-11-12 20:55:31,999 INFO L426 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2024-11-12 20:55:32,000 INFO L333 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-12 20:55:32,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2024-11-12 20:55:32,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:55:32,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:55:32,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:55:32,001 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-12 20:55:32,001 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2024-11-12 20:55:32,002 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0);" [2024-11-12 20:55:32,002 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > main_~y~0#1;" "assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1;" "assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1;" "assume !(main_~x~0#1 > 0);" "assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0);" [2024-11-12 20:55:32,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-11-12 20:55:32,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:32,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542872084] [2024-11-12 20:55:32,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:32,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:32,007 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:32,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:32,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:32,009 INFO L85 PathProgramCache]: Analyzing trace with hash 42266403, now seen corresponding path program 2 times [2024-11-12 20:55:32,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:32,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600660718] [2024-11-12 20:55:32,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:32,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:32,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:55:32,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600660718] [2024-11-12 20:55:32,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600660718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:55:32,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272167274] [2024-11-12 20:55:32,038 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:55:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:55:32,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:32,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:55:32,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 20:55:32,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 20:55:32,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:55:32,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2024-11-12 20:55:32,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419859742] [2024-11-12 20:55:32,095 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 20:55:32,095 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:55:32,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:55:32,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:55:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:55:32,096 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. cyclomatic complexity: 8 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:32,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:55:32,106 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2024-11-12 20:55:32,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2024-11-12 20:55:32,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-12 20:55:32,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 15 transitions. [2024-11-12 20:55:32,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-12 20:55:32,107 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-12 20:55:32,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2024-11-12 20:55:32,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:55:32,107 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-11-12 20:55:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2024-11-12 20:55:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2024-11-12 20:55:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-11-12 20:55:32,109 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-12 20:55:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:55:32,113 INFO L426 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-12 20:55:32,113 INFO L333 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-12 20:55:32,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2024-11-12 20:55:32,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-12 20:55:32,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:55:32,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:55:32,114 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-12 20:55:32,114 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-12 20:55:32,114 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0);" "assume main_~x~0#1 > main_~y~0#1;" [2024-11-12 20:55:32,114 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1;" [2024-11-12 20:55:32,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:32,115 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-11-12 20:55:32,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:32,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141997792] [2024-11-12 20:55:32,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:32,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:32,123 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:32,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:32,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2024-11-12 20:55:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:32,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969613068] [2024-11-12 20:55:32,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:32,134 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:32,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:32,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:32,138 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2024-11-12 20:55:32,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:55:32,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386433265] [2024-11-12 20:55:32,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:55:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:55:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:32,147 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:55:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:55:32,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:55:32,174 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:55:32,174 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:55:32,174 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:55:32,174 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:55:32,174 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-12 20:55:32,174 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,174 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:55:32,175 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:55:32,175 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration6_Loop [2024-11-12 20:55:32,175 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:55:32,175 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:55:32,191 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:32,201 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:32,204 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:32,208 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 [2024-11-12 20:55:32,245 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:55:32,245 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-12 20:55:32,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:32,250 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:55:32,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-12 20:55:32,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:55:32,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:55:32,276 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:55:32,276 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: [] [2024-11-12 20:55:32,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-12 20:55:32,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:32,293 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) [2024-11-12 20:55:32,294 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 [2024-11-12 20:55:32,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:55:32,296 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:55:32,318 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:55:32,319 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-12 20:55:32,333 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 [2024-11-12 20:55:32,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:32,336 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) [2024-11-12 20:55:32,338 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 [2024-11-12 20:55:32,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:55:32,339 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:55:32,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-12 20:55:32,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:32,374 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) [2024-11-12 20:55:32,376 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 [2024-11-12 20:55:32,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-12 20:55:32,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:55:32,415 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-12 20:55:32,419 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 [2024-11-12 20:55:32,420 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:55:32,420 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:55:32,420 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:55:32,420 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:55:32,420 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-12 20:55:32,420 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,420 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:55:32,420 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:55:32,420 INFO L132 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration6_Loop [2024-11-12 20:55:32,420 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:55:32,420 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:55:32,422 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:32,425 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:32,431 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:55:32,471 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:55:32,471 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-12 20:55:32,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:32,475 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) [2024-11-12 20:55:32,476 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 [2024-11-12 20:55:32,477 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 [2024-11-12 20:55:32,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:55:32,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:55:32,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:55:32,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:55:32,493 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:55:32,493 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:55:32,496 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:55:32,512 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 [2024-11-12 20:55:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:32,514 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) [2024-11-12 20:55:32,517 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 [2024-11-12 20:55:32,518 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 [2024-11-12 20:55:32,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:55:32,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:55:32,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:55:32,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:55:32,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:55:32,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 20:55:32,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:55:32,535 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-12 20:55:32,539 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-12 20:55:32,539 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-12 20:55:32,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:55:32,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:55:32,541 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) [2024-11-12 20:55:32,543 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 [2024-11-12 20:55:32,544 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-12 20:55:32,544 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-12 20:55:32,544 INFO L474 LassoAnalysis]: Proved termination. [2024-11-12 20:55:32,544 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-12 20:55:32,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-12 20:55:32,563 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-12 20:55:32,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:55:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:32,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:55:32,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:55:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:55:32,594 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:55:32,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:55:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:55:32,595 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-12 20:55:32,595 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:32,601 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 14 transitions. Complement of second has 2 states. [2024-11-12 20:55:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-12 20:55:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:55:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-11-12 20:55:32,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2024-11-12 20:55:32,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:55:32,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2024-11-12 20:55:32,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:55:32,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-12 20:55:32,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:55:32,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2024-11-12 20:55:32,603 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-12 20:55:32,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2024-11-12 20:55:32,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-12 20:55:32,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-12 20:55:32,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-12 20:55:32,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:55:32,604 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 20:55:32,604 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 20:55:32,604 INFO L426 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 20:55:32,604 INFO L333 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-12 20:55:32,604 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-12 20:55:32,604 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-12 20:55:32,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-12 20:55:32,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 08:55:32 BoogieIcfgContainer [2024-11-12 20:55:32,614 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-12 20:55:32,615 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:55:32,615 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:55:32,615 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:55:32,615 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:55:30" (3/4) ... [2024-11-12 20:55:32,617 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-12 20:55:32,618 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:55:32,619 INFO L158 Benchmark]: Toolchain (without parser) took 2782.68ms. Allocated memory is still 163.6MB. Free memory was 93.2MB in the beginning and 114.9MB in the end (delta: -21.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:55:32,620 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:55:32,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.53ms. Allocated memory is still 163.6MB. Free memory was 93.0MB in the beginning and 81.8MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-12 20:55:32,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.22ms. Allocated memory is still 163.6MB. Free memory was 81.8MB in the beginning and 80.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:55:32,622 INFO L158 Benchmark]: Boogie Preprocessor took 26.76ms. Allocated memory is still 163.6MB. Free memory was 80.5MB in the beginning and 79.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:55:32,622 INFO L158 Benchmark]: RCFGBuilder took 213.12ms. Allocated memory is still 163.6MB. Free memory was 79.0MB in the beginning and 69.5MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-12 20:55:32,622 INFO L158 Benchmark]: BuchiAutomizer took 2282.10ms. Allocated memory is still 163.6MB. Free memory was 69.3MB in the beginning and 115.9MB in the end (delta: -46.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:55:32,623 INFO L158 Benchmark]: Witness Printer took 3.78ms. Allocated memory is still 163.6MB. Free memory was 115.9MB in the beginning and 114.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:55:32,624 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.53ms. Allocated memory is still 163.6MB. Free memory was 93.0MB in the beginning and 81.8MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.22ms. Allocated memory is still 163.6MB. Free memory was 81.8MB in the beginning and 80.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.76ms. Allocated memory is still 163.6MB. Free memory was 80.5MB in the beginning and 79.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 213.12ms. Allocated memory is still 163.6MB. Free memory was 79.0MB in the beginning and 69.5MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2282.10ms. Allocated memory is still 163.6MB. Free memory was 69.3MB in the beginning and 115.9MB in the end (delta: -46.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.78ms. Allocated memory is still 163.6MB. Free memory was 115.9MB in the beginning and 114.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (4 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 41 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI4 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax197 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp88 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-12 20:55:32,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-12 20:55:32,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-12 20:55:33,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 20:55:33,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 20:55:33,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 20:55:33,653 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