./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nest-if3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 023d838f 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/loop-invgen/nest-if3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 23:04:47,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 23:04:47,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-10 23:04:47,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 23:04:47,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 23:04:47,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-10 23:04:47,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 23:04:47,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 23:04:47,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 23:04:47,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 23:04:47,146 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 23:04:47,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 23:04:47,147 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 23:04:47,147 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 23:04:47,148 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-10 23:04:47,148 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-10 23:04:47,149 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-10 23:04:47,153 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-10 23:04:47,153 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-10 23:04:47,153 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-10 23:04:47,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 23:04:47,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-10 23:04:47,154 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 23:04:47,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 23:04:47,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 23:04:47,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 23:04:47,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-10 23:04:47,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-10 23:04:47,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-10 23:04:47,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 23:04:47,156 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 23:04:47,156 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 23:04:47,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 23:04:47,157 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-10 23:04:47,157 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 23:04:47,157 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 23:04:47,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 23:04:47,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 23:04:47,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 23:04:47,159 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-10 23:04:47,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff6ed2162f27809b742c891ab6e2d783f8472921e0d39d2ecd3fd1d3f6661283 [2024-11-10 23:04:47,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 23:04:47,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 23:04:47,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 23:04:47,402 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 23:04:47,402 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 23:04:47,403 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nest-if3.i [2024-11-10 23:04:48,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 23:04:48,936 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 23:04:48,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nest-if3.i [2024-11-10 23:04:48,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b00650c7/6246d264c5dd456391bec0790cb3998d/FLAG033243cd9 [2024-11-10 23:04:48,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b00650c7/6246d264c5dd456391bec0790cb3998d [2024-11-10 23:04:48,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 23:04:48,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 23:04:48,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 23:04:48,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 23:04:48,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 23:04:48,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:04:48" (1/1) ... [2024-11-10 23:04:48,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c289e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:48, skipping insertion in model container [2024-11-10 23:04:48,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:04:48" (1/1) ... [2024-11-10 23:04:48,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 23:04:49,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 23:04:49,243 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 23:04:49,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 23:04:49,271 INFO L204 MainTranslator]: Completed translation [2024-11-10 23:04:49,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49 WrapperNode [2024-11-10 23:04:49,272 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 23:04:49,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 23:04:49,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 23:04:49,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 23:04:49,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,289 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,310 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2024-11-10 23:04:49,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 23:04:49,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 23:04:49,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 23:04:49,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 23:04:49,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,332 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 23:04:49,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,344 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 23:04:49,346 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 23:04:49,346 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 23:04:49,348 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 23:04:49,349 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (1/1) ... [2024-11-10 23:04:49,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:49,381 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) [2024-11-10 23:04:49,384 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 [2024-11-10 23:04:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 23:04:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 23:04:49,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 23:04:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 23:04:49,500 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 23:04:49,502 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 23:04:49,629 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-10 23:04:49,630 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 23:04:49,644 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 23:04:49,644 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 23:04:49,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 11:04:49 BoogieIcfgContainer [2024-11-10 23:04:49,645 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 23:04:49,646 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-10 23:04:49,646 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-10 23:04:49,651 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-10 23:04:49,651 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 23:04:49,652 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 11:04:48" (1/3) ... [2024-11-10 23:04:49,653 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33a86da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 11:04:49, skipping insertion in model container [2024-11-10 23:04:49,653 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 23:04:49,653 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:04:49" (2/3) ... [2024-11-10 23:04:49,653 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33a86da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 11:04:49, skipping insertion in model container [2024-11-10 23:04:49,653 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 23:04:49,653 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 11:04:49" (3/3) ... [2024-11-10 23:04:49,654 INFO L332 chiAutomizerObserver]: Analyzing ICFG nest-if3.i [2024-11-10 23:04:49,705 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-10 23:04:49,706 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-10 23:04:49,706 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-10 23:04:49,706 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-10 23:04:49,706 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-10 23:04:49,706 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-10 23:04:49,706 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-10 23:04:49,706 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-10 23:04:49,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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) [2024-11-10 23:04:49,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-11-10 23:04:49,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 23:04:49,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 23:04:49,729 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-10 23:04:49,729 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-10 23:04:49,729 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-10 23:04:49,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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) [2024-11-10 23:04:49,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-11-10 23:04:49,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 23:04:49,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 23:04:49,731 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-10 23:04:49,731 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-10 23:04:49,736 INFO L745 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 13#ULTIMATE.init_returnLabel#1true assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet4#1, main_#t~post5#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 14#L28-1true assume !!(main_~l~0#1 > 0); 7#L29-1true assume !!(main_~l~0#1 < 1000000); 10#L30-1true assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 8#L31true [2024-11-10 23:04:49,737 INFO L747 eck$LassoCheckResult]: Loop: 8#L31true assume true; 18#L31-2true assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 9#L32true assume !true; 11#L35-1true havoc main_#t~nondet4#1; 20#L35true assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~l~0#1 := 1 + main_~l~0#1; 17#L31-1true main_#t~post5#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 8#L31true [2024-11-10 23:04:49,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash 63906560, now seen corresponding path program 1 times [2024-11-10 23:04:49,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:49,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283111933] [2024-11-10 23:04:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:49,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:49,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:49,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:49,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:49,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1566831761, now seen corresponding path program 1 times [2024-11-10 23:04:49,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:49,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601529876] [2024-11-10 23:04:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:49,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 23:04:49,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601529876] [2024-11-10 23:04:49,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601529876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 23:04:49,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 23:04:49,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 23:04:49,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188596330] [2024-11-10 23:04:49,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 23:04:49,896 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-10 23:04:49,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 23:04:49,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 23:04:49,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 23:04:49,933 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2024-11-10 23:04:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 23:04:49,938 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2024-11-10 23:04:49,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 24 transitions. [2024-11-10 23:04:49,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-11-10 23:04:49,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 16 transitions. [2024-11-10 23:04:49,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2024-11-10 23:04:49,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-11-10 23:04:49,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2024-11-10 23:04:49,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-10 23:04:49,944 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-10 23:04:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2024-11-10 23:04:49,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-10 23:04:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 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) [2024-11-10 23:04:49,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-10 23:04:49,967 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-10 23:04:49,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 23:04:49,974 INFO L425 stractBuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-10 23:04:49,975 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-10 23:04:49,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2024-11-10 23:04:49,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-11-10 23:04:49,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 23:04:49,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 23:04:49,977 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-10 23:04:49,978 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 23:04:49,978 INFO L745 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 48#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet4#1, main_#t~post5#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 59#L28-1 assume !!(main_~l~0#1 > 0); 52#L29-1 assume !!(main_~l~0#1 < 1000000); 53#L30-1 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 54#L31 [2024-11-10 23:04:49,978 INFO L747 eck$LassoCheckResult]: Loop: 54#L31 assume true; 55#L31-2 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 56#L32 assume true; 49#L32-1 assume !(main_~i~0#1 < main_~n~0#1); 51#L35-1 havoc main_#t~nondet4#1; 58#L35 assume 0 != main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~l~0#1 := 1 + main_~l~0#1; 60#L31-1 main_#t~post5#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 54#L31 [2024-11-10 23:04:49,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 63906560, now seen corresponding path program 2 times [2024-11-10 23:04:49,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:49,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320343993] [2024-11-10 23:04:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:49,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:50,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:50,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1326520678, now seen corresponding path program 1 times [2024-11-10 23:04:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703874763] [2024-11-10 23:04:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:50,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:50,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:50,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:50,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1784452729, now seen corresponding path program 1 times [2024-11-10 23:04:50,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:50,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66736687] [2024-11-10 23:04:50,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:50,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:50,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:50,081 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:50,179 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 23:04:50,180 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 23:04:50,180 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 23:04:50,180 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 23:04:50,180 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 23:04:50,181 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,181 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 23:04:50,181 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 23:04:50,181 INFO L132 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2024-11-10 23:04:50,181 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 23:04:50,181 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 23:04:50,196 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:50,204 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:50,208 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:50,223 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:50,277 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 23:04:50,278 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 23:04:50,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:50,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 23:04:50,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-10 23:04:50,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 23:04:50,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:50,301 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 23:04:50,302 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4#1=0} Honda state: {ULTIMATE.start_main_#t~nondet4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-10 23:04:50,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-11-10 23:04:50,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:50,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 23:04:50,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-10 23:04:50,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 23:04:50,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:50,339 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 23:04:50,339 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=0} Honda state: {ULTIMATE.start_main_~i~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-10 23:04:50,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-10 23:04:50,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:50,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 23:04:50,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-10 23:04:50,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 23:04:50,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:50,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-10 23:04:50,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:50,396 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) [2024-11-10 23:04:50,397 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 [2024-11-10 23:04:50,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 23:04:50,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:50,549 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 23:04:50,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-10 23:04:50,554 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 23:04:50,555 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 23:04:50,555 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 23:04:50,555 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 23:04:50,555 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 23:04:50,555 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,555 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 23:04:50,555 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 23:04:50,555 INFO L132 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration2_Loop [2024-11-10 23:04:50,555 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 23:04:50,555 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 23:04:50,557 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:50,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:50,566 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:50,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:50,643 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 23:04:50,648 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 23:04:50,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:50,664 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) [2024-11-10 23:04:50,666 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 [2024-11-10 23:04:50,667 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 [2024-11-10 23:04:50,678 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 23:04:50,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 23:04:50,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 23:04:50,679 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 23:04:50,679 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 23:04:50,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 23:04:50,681 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 23:04:50,689 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 23:04:50,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-10 23:04:50,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:50,703 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) [2024-11-10 23:04:50,703 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 [2024-11-10 23:04:50,704 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 [2024-11-10 23:04:50,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 23:04:50,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 23:04:50,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 23:04:50,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 23:04:50,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 23:04:50,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 23:04:50,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 23:04:50,717 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 23:04:50,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-10 23:04:50,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:50,734 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) [2024-11-10 23:04:50,736 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 [2024-11-10 23:04:50,736 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 [2024-11-10 23:04:50,756 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 23:04:50,756 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 23:04:50,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 23:04:50,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 23:04:50,757 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 23:04:50,758 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 23:04:50,758 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 23:04:50,765 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 23:04:50,768 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-10 23:04:50,769 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-10 23:04:50,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:50,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:50,792 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) [2024-11-10 23:04:50,794 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 [2024-11-10 23:04:50,794 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 23:04:50,794 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 23:04:50,795 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 23:04:50,795 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2024-11-10 23:04:50,806 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 [2024-11-10 23:04:50,809 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 23:04:50,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:50,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 23:04:50,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:50,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 23:04:50,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:50,931 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 [2024-11-10 23:04:50,933 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-11-10 23:04:50,975 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Result 23 states and 28 transitions. Complement of second has 6 states. [2024-11-10 23:04:50,976 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 [2024-11-10 23:04:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-11-10 23:04:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2024-11-10 23:04:50,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 7 letters. [2024-11-10 23:04:50,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:50,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 7 letters. [2024-11-10 23:04:50,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:50,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 14 letters. [2024-11-10 23:04:50,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:50,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2024-11-10 23:04:50,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-10 23:04:50,983 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 20 states and 24 transitions. [2024-11-10 23:04:50,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-11-10 23:04:50,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-10 23:04:50,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2024-11-10 23:04:50,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 23:04:50,984 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-10 23:04:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2024-11-10 23:04:50,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-10 23:04:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 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) [2024-11-10 23:04:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-10 23:04:50,986 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-10 23:04:50,986 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-10 23:04:50,986 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-10 23:04:50,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 24 transitions. [2024-11-10 23:04:50,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-10 23:04:50,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 23:04:50,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 23:04:50,988 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 23:04:50,988 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-10 23:04:50,988 INFO L745 eck$LassoCheckResult]: Stem: 142#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 143#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet4#1, main_#t~post5#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 160#L28-1 assume !!(main_~l~0#1 > 0); 149#L29-1 assume !!(main_~l~0#1 < 1000000); 150#L30-1 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 151#L31 assume true; 153#L31-2 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 155#L32 [2024-11-10 23:04:50,989 INFO L747 eck$LassoCheckResult]: Loop: 155#L32 assume true; 144#L32-1 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 145#L18 assume !(0 == __VERIFIER_assert_~cond#1); 157#L21 assume true;havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 155#L32 [2024-11-10 23:04:50,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1284662751, now seen corresponding path program 1 times [2024-11-10 23:04:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712052978] [2024-11-10 23:04:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:51,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:51,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1445721, now seen corresponding path program 1 times [2024-11-10 23:04:51,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:51,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94277108] [2024-11-10 23:04:51,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:51,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:51,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1327912503, now seen corresponding path program 1 times [2024-11-10 23:04:51,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:51,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323124203] [2024-11-10 23:04:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:51,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:51,089 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 23:04:51,089 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 23:04:51,089 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 23:04:51,090 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 23:04:51,090 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 23:04:51,090 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,090 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 23:04:51,090 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 23:04:51,090 INFO L132 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2024-11-10 23:04:51,090 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 23:04:51,091 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 23:04:51,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,097 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,106 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,136 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 23:04:51,136 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 23:04:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,138 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) [2024-11-10 23:04:51,139 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 [2024-11-10 23:04:51,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 23:04:51,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:51,155 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 23:04:51,156 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-10 23:04:51,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-10 23:04:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,168 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) [2024-11-10 23:04:51,169 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 [2024-11-10 23:04:51,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 23:04:51,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:51,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-10 23:04:51,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,193 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) [2024-11-10 23:04:51,195 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 [2024-11-10 23:04:51,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 23:04:51,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:51,243 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 23:04:51,247 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 [2024-11-10 23:04:51,248 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 23:04:51,248 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 23:04:51,248 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 23:04:51,248 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 23:04:51,248 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 23:04:51,248 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,248 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 23:04:51,249 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 23:04:51,249 INFO L132 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration3_Loop [2024-11-10 23:04:51,249 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 23:04:51,249 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 23:04:51,250 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,255 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,262 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,265 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,297 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 23:04:51,297 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 23:04:51,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,300 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 23:04:51,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-10 23:04:51,302 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 [2024-11-10 23:04:51,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 23:04:51,312 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 23:04:51,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 23:04:51,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 23:04:51,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 23:04:51,313 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 23:04:51,313 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 23:04:51,314 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 23:04:51,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-10 23:04:51,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,326 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) [2024-11-10 23:04:51,327 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 [2024-11-10 23:04:51,328 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 [2024-11-10 23:04:51,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 23:04:51,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 23:04:51,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 23:04:51,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 23:04:51,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 23:04:51,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 23:04:51,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 23:04:51,342 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 23:04:51,347 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-11-10 23:04:51,347 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 23:04:51,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,349 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) [2024-11-10 23:04:51,351 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 [2024-11-10 23:04:51,352 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 23:04:51,352 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 23:04:51,352 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 23:04:51,352 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2024-11-10 23:04:51,366 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 [2024-11-10 23:04:51,368 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 23:04:51,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:51,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 23:04:51,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:51,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 23:04:51,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:51,452 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 [2024-11-10 23:04:51,453 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 24 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-10 23:04:51,476 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 24 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Result 37 states and 43 transitions. Complement of second has 7 states. [2024-11-10 23:04:51,478 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 [2024-11-10 23:04:51,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-10 23:04:51,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-10 23:04:51,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-10 23:04:51,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:51,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 4 letters. [2024-11-10 23:04:51,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:51,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 8 letters. [2024-11-10 23:04:51,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:51,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 43 transitions. [2024-11-10 23:04:51,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-10 23:04:51,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 26 states and 30 transitions. [2024-11-10 23:04:51,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-11-10 23:04:51,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-10 23:04:51,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 30 transitions. [2024-11-10 23:04:51,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 23:04:51,484 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-10 23:04:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 30 transitions. [2024-11-10 23:04:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-10 23:04:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 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) [2024-11-10 23:04:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-10 23:04:51,490 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-10 23:04:51,490 INFO L425 stractBuchiCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-10 23:04:51,490 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-10 23:04:51,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 30 transitions. [2024-11-10 23:04:51,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-10 23:04:51,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 23:04:51,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 23:04:51,492 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 23:04:51,493 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-10 23:04:51,493 INFO L745 eck$LassoCheckResult]: Stem: 255#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 256#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet4#1, main_#t~post5#1, main_~i~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1;havoc main_~i~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_#t~nondet1#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 276#L28-1 assume !!(main_~l~0#1 > 0); 261#L29-1 assume !!(main_~l~0#1 < 1000000); 262#L30-1 assume !!(main_~n~0#1 < 1000000);main_~k~0#1 := 1; 263#L31 assume true; 264#L31-2 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 279#L32 assume true; 278#L32-1 assume !(main_~i~0#1 < main_~n~0#1); 274#L35-1 havoc main_#t~nondet4#1; 275#L35 assume !(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1; 277#L31-1 main_#t~post5#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 265#L31 assume true; 267#L31-2 assume !!(main_~k~0#1 < main_~n~0#1);main_~i~0#1 := main_~l~0#1; 268#L32 [2024-11-10 23:04:51,493 INFO L747 eck$LassoCheckResult]: Loop: 268#L32 assume true; 257#L32-1 assume !!(main_~i~0#1 < main_~n~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 1 <= main_~i~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 258#L18 assume !(0 == __VERIFIER_assert_~cond#1); 271#L21 assume true;havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;main_#t~post3#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 268#L32 [2024-11-10 23:04:51,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1167090939, now seen corresponding path program 1 times [2024-11-10 23:04:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:51,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469124674] [2024-11-10 23:04:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1445721, now seen corresponding path program 2 times [2024-11-10 23:04:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:51,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812272040] [2024-11-10 23:04:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:51,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 23:04:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 23:04:51,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 23:04:51,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:51,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1937279069, now seen corresponding path program 1 times [2024-11-10 23:04:51,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 23:04:51,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819196648] [2024-11-10 23:04:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:51,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 23:04:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:51,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 23:04:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819196648] [2024-11-10 23:04:51,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819196648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 23:04:51,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035051159] [2024-11-10 23:04:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 23:04:51,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 23:04:51,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,665 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 23:04:51,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 23:04:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:51,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 23:04:51,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:51,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 23:04:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:51,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035051159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 23:04:51,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 23:04:51,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-10 23:04:51,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499616556] [2024-11-10 23:04:51,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 23:04:51,814 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 23:04:51,814 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 23:04:51,814 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 23:04:51,814 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 23:04:51,814 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 23:04:51,814 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,815 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 23:04:51,815 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 23:04:51,815 INFO L132 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2024-11-10 23:04:51,815 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 23:04:51,815 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 23:04:51,816 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,819 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:51,857 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 23:04:51,857 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 23:04:51,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,860 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) [2024-11-10 23:04:51,862 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 [2024-11-10 23:04:51,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 23:04:51,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:51,882 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 23:04:51,882 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-10 23:04:51,897 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 [2024-11-10 23:04:51,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,899 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) [2024-11-10 23:04:51,901 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 [2024-11-10 23:04:51,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 23:04:51,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:51,935 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 [2024-11-10 23:04:51,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:51,937 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) [2024-11-10 23:04:51,938 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 [2024-11-10 23:04:51,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 23:04:51,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 23:04:51,990 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 23:04:51,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-10 23:04:51,996 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 23:04:51,996 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 23:04:51,996 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 23:04:51,997 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 23:04:51,997 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 23:04:51,997 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:51,997 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 23:04:51,997 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 23:04:51,997 INFO L132 ssoRankerPreferences]: Filename of dumped script: nest-if3.i_Iteration4_Loop [2024-11-10 23:04:51,997 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 23:04:51,997 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 23:04:51,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:52,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:52,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:52,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 23:04:52,039 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 23:04:52,039 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 23:04:52,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:52,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:52,041 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) [2024-11-10 23:04:52,043 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 [2024-11-10 23:04:52,043 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 [2024-11-10 23:04:52,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 23:04:52,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 23:04:52,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 23:04:52,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 23:04:52,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 23:04:52,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 23:04:52,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 23:04:52,061 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 23:04:52,066 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-11-10 23:04:52,067 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 23:04:52,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 23:04:52,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 23:04:52,069 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 23:04:52,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-10 23:04:52,071 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 23:04:52,071 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 23:04:52,071 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 23:04:52,071 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~n~0#1 - 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-10 23:04:52,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-10 23:04:52,087 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 23:04:52,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:52,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 23:04:52,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:52,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 23:04:52,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:52,182 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 [2024-11-10 23:04:52,182 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 30 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-10 23:04:52,201 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 30 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 30 states and 34 transitions. Complement of second has 7 states. [2024-11-10 23:04:52,201 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 [2024-11-10 23:04:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-10 23:04:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-10 23:04:52,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 14 letters. Loop has 4 letters. [2024-11-10 23:04:52,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:52,203 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-10 23:04:52,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:52,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 23:04:52,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:52,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 23:04:52,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:52,269 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-10 23:04:52,269 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 30 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-10 23:04:52,289 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 30 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 30 states and 34 transitions. Complement of second has 7 states. [2024-11-10 23:04:52,291 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 [2024-11-10 23:04:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-10 23:04:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-10 23:04:52,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 14 letters. Loop has 4 letters. [2024-11-10 23:04:52,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:52,292 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-10 23:04:52,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 23:04:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:52,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 23:04:52,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 23:04:52,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 23:04:52,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 23:04:52,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 23:04:52,377 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-10 23:04:52,377 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 30 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-10 23:04:52,399 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 30 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 37 states and 42 transitions. Complement of second has 6 states. [2024-11-10 23:04:52,400 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 [2024-11-10 23:04:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-10 23:04:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2024-11-10 23:04:52,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 14 letters. Loop has 4 letters. [2024-11-10 23:04:52,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:52,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 18 letters. Loop has 4 letters. [2024-11-10 23:04:52,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:52,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 14 letters. Loop has 8 letters. [2024-11-10 23:04:52,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 23:04:52,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 42 transitions. [2024-11-10 23:04:52,404 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 23:04:52,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 0 states and 0 transitions. [2024-11-10 23:04:52,404 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-10 23:04:52,404 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-10 23:04:52,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-10 23:04:52,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-10 23:04:52,404 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 23:04:52,405 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 23:04:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 23:04:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 23:04:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 23:04:52,407 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 23:04:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 23:04:52,407 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-10 23:04:52,407 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-10 23:04:52,407 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 23:04:52,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-10 23:04:52,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-10 23:04:52,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-10 23:04:52,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-10 23:04:52,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-10 23:04:52,408 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 23:04:52,408 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 23:04:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 23:04:52,409 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 23:04:52,409 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-10 23:04:52,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-10 23:04:52,409 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 23:04:52,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-10 23:04:52,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 11:04:52 BoogieIcfgContainer [2024-11-10 23:04:52,417 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-10 23:04:52,418 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 23:04:52,418 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 23:04:52,418 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 23:04:52,418 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 11:04:49" (3/4) ... [2024-11-10 23:04:52,420 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-10 23:04:52,421 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 23:04:52,423 INFO L158 Benchmark]: Toolchain (without parser) took 3455.05ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 93.6MB in the beginning and 55.1MB in the end (delta: 38.5MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. [2024-11-10 23:04:52,423 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 23:04:52,424 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.06ms. Allocated memory is still 151.0MB. Free memory was 93.2MB in the beginning and 119.8MB in the end (delta: -26.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 23:04:52,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.71ms. Allocated memory is still 151.0MB. Free memory was 119.8MB in the beginning and 118.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 23:04:52,424 INFO L158 Benchmark]: Boogie Preprocessor took 34.19ms. Allocated memory is still 151.0MB. Free memory was 118.5MB in the beginning and 116.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 23:04:52,425 INFO L158 Benchmark]: IcfgBuilder took 299.15ms. Allocated memory is still 151.0MB. Free memory was 116.5MB in the beginning and 106.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-10 23:04:52,425 INFO L158 Benchmark]: BuchiAutomizer took 2771.47ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 106.0MB in the beginning and 55.1MB in the end (delta: 50.9MB). Peak memory consumption was 85.7MB. Max. memory is 16.1GB. [2024-11-10 23:04:52,425 INFO L158 Benchmark]: Witness Printer took 3.50ms. Allocated memory is still 184.5MB. Free memory is still 55.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 23:04:52,431 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.06ms. Allocated memory is still 151.0MB. Free memory was 93.2MB in the beginning and 119.8MB in the end (delta: -26.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.71ms. Allocated memory is still 151.0MB. Free memory was 119.8MB in the beginning and 118.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.19ms. Allocated memory is still 151.0MB. Free memory was 118.5MB in the beginning and 116.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 299.15ms. Allocated memory is still 151.0MB. Free memory was 116.5MB in the beginning and 106.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2771.47ms. Allocated memory was 151.0MB in the beginning and 184.5MB in the end (delta: 33.6MB). Free memory was 106.0MB in the beginning and 55.1MB in the end (delta: 50.9MB). Peak memory consumption was 85.7MB. Max. memory is 16.1GB. * Witness Printer took 3.50ms. Allocated memory is still 184.5MB. Free memory is still 55.1MB. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (n + ((long long) -1 * k)) and consists of 4 locations. One deterministic module has affine ranking function (((long long) -1 * i) + n) and consists of 4 locations. One nondeterministic module has affine ranking function (((long long) -1 * i) + n) and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 81 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-10 23:04:52,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-10 23:04:52,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 23:04:52,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-10 23:04:53,055 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 [2024-11-10 23:04:53,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE