./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/afterrec-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/afterrec-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 1c92d0a3779cdad7e145b29b6ae35aeb1a90bc327e2327b92a2158da4de5b6ea --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 07:48:58,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 07:48:58,112 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-01-10 07:48:58,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 07:48:58,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 07:48:58,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 07:48:58,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 07:48:58,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 07:48:58,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 07:48:58,139 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 07:48:58,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 07:48:58,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 07:48:58,140 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 07:48:58,140 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-01-10 07:48:58,140 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-01-10 07:48:58,140 INFO L153 SettingsManager]: * Use old map elimination=false [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-01-10 07:48:58,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-01-10 07:48:58,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-01-10 07:48:58,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 07:48:58,142 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 07:48:58,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 07:48:58,142 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-01-10 07:48:58,142 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 07:48:58,142 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 07:48:58,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 07:48:58,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 07:48:58,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 07:48:58,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 07:48:58,143 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-01-10 07:48:58,143 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/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 -> 1c92d0a3779cdad7e145b29b6ae35aeb1a90bc327e2327b92a2158da4de5b6ea [2025-01-10 07:48:58,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 07:48:58,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 07:48:58,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 07:48:58,388 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 07:48:58,388 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 07:48:58,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec-2.c [2025-01-10 07:48:59,547 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/606fbc70c/eff147c8650940d69504f3683d2be4d8/FLAGc10bdf917 [2025-01-10 07:48:59,767 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 07:48:59,767 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec-2.c [2025-01-10 07:48:59,775 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/606fbc70c/eff147c8650940d69504f3683d2be4d8/FLAGc10bdf917 [2025-01-10 07:49:00,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/606fbc70c/eff147c8650940d69504f3683d2be4d8 [2025-01-10 07:49:00,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 07:49:00,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 07:49:00,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 07:49:00,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 07:49:00,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 07:49:00,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5b653c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00, skipping insertion in model container [2025-01-10 07:49:00,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 07:49:00,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 07:49:00,228 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 07:49:00,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 07:49:00,245 INFO L204 MainTranslator]: Completed translation [2025-01-10 07:49:00,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00 WrapperNode [2025-01-10 07:49:00,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 07:49:00,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 07:49:00,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 07:49:00,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 07:49:00,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,265 INFO L138 Inliner]: procedures = 12, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2025-01-10 07:49:00,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 07:49:00,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 07:49:00,266 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 07:49:00,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 07:49:00,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,272 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,281 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]. [2025-01-10 07:49:00,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,283 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,285 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 07:49:00,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 07:49:00,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 07:49:00,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 07:49:00,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (1/1) ... [2025-01-10 07:49:00,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:00,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:00,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:00,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-01-10 07:49:00,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 07:49:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-01-10 07:49:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-01-10 07:49:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 07:49:00,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 07:49:00,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 07:49:00,379 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 07:49:00,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 07:49:00,428 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2025-01-10 07:49:00,428 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 07:49:00,433 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 07:49:00,433 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 07:49:00,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:00 BoogieIcfgContainer [2025-01-10 07:49:00,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 07:49:00,434 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-01-10 07:49:00,434 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-01-10 07:49:00,438 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-01-10 07:49:00,439 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:00,439 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.01 07:49:00" (1/3) ... [2025-01-10 07:49:00,440 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b99d614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.01 07:49:00, skipping insertion in model container [2025-01-10 07:49:00,440 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:00,440 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:00" (2/3) ... [2025-01-10 07:49:00,440 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b99d614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.01 07:49:00, skipping insertion in model container [2025-01-10 07:49:00,440 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:00,440 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:00" (3/3) ... [2025-01-10 07:49:00,441 INFO L363 chiAutomizerObserver]: Analyzing ICFG afterrec-2.c [2025-01-10 07:49:00,480 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-01-10 07:49:00,480 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-01-10 07:49:00,480 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-01-10 07:49:00,481 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-01-10 07:49:00,481 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-01-10 07:49:00,481 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-01-10 07:49:00,481 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-01-10 07:49:00,481 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-01-10 07:49:00,485 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 07:49:00,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-01-10 07:49:00,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:00,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:00,501 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-01-10 07:49:00,501 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-01-10 07:49:00,501 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-01-10 07:49:00,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 07:49:00,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-01-10 07:49:00,503 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:00,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:00,503 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-01-10 07:49:00,503 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-01-10 07:49:00,508 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;" "call f(2);"< [2025-01-10 07:49:00,508 INFO L754 eck$LassoCheckResult]: Loop: "~n#1 := #in~n#1;" "assume !(~n#1 < 3);#t~post4#1 := ~n#1;~n#1 := #t~post4#1 - 1;havoc #t~post4#1;" "call f(~n#1);"< [2025-01-10 07:49:00,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:00,512 INFO L85 PathProgramCache]: Analyzing trace with hash 40785, now seen corresponding path program 1 times [2025-01-10 07:49:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:00,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125012284] [2025-01-10 07:49:00,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:00,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:00,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:00,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:00,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:00,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:00,572 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:00,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:00,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:00,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:00,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:00,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:00,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:00,591 INFO L85 PathProgramCache]: Analyzing trace with hash 29933, now seen corresponding path program 1 times [2025-01-10 07:49:00,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:00,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934777452] [2025-01-10 07:49:00,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:00,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:00,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:00,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:00,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:00,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:00,605 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:00,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:00,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:00,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:00,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:00,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:00,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1215026077, now seen corresponding path program 1 times [2025-01-10 07:49:00,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:00,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113215459] [2025-01-10 07:49:00,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:00,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:00,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 07:49:00,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 07:49:00,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:00,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:00,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:00,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113215459] [2025-01-10 07:49:00,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113215459] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 07:49:00,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 07:49:00,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 07:49:00,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643698659] [2025-01-10 07:49:00,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 07:49:00,815 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:00,818 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:00,818 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:00,819 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:00,819 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:00,819 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:00,819 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:00,819 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:00,819 INFO L132 ssoRankerPreferences]: Filename of dumped script: afterrec-2.c_Iteration1_Loop [2025-01-10 07:49:00,819 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:00,820 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:00,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:00,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:00,841 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:00,879 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:00,880 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:00,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:00,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-01-10 07:49:00,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:00,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:00,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-01-10 07:49:00,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:00,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:00,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:00,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-01-10 07:49:00,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:00,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:00,955 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:00,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-01-10 07:49:00,960 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:00,960 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:00,960 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:00,960 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:00,960 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:00,960 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:00,960 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:00,960 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:00,960 INFO L132 ssoRankerPreferences]: Filename of dumped script: afterrec-2.c_Iteration1_Loop [2025-01-10 07:49:00,960 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:00,960 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:00,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:00,970 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:00,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:00,998 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:01,001 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:01,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:01,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:01,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:01,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-01-10 07:49:01,008 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-01-10 07:49:01,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:01,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:01,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:01,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:01,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:01,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:01,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:01,026 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:01,030 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:01,032 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:01,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:01,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:01,035 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:01,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-01-10 07:49:01,037 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:01,037 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:01,037 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:01,038 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n#1) = 1*f_#in~n#1 Supporting invariants [] [2025-01-10 07:49:01,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-01-10 07:49:01,046 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:01,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:01,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:01,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:01,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:01,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:01,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 07:49:01,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:01,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:01,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:01,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:01,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:01,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 07:49:01,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:01,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:01,159 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-01-10 07:49:01,161 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 07:49:01,235 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 41 transitions. Complement of second has 23 states. [2025-01-10 07:49:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2025-01-10 07:49:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 07:49:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2025-01-10 07:49:01,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 3 letters. Loop has 3 letters. [2025-01-10 07:49:01,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:01,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 6 letters. Loop has 3 letters. [2025-01-10 07:49:01,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:01,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 3 letters. Loop has 6 letters. [2025-01-10 07:49:01,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:01,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 41 transitions. [2025-01-10 07:49:01,252 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-01-10 07:49:01,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 0 states and 0 transitions. [2025-01-10 07:49:01,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-01-10 07:49:01,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-01-10 07:49:01,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-01-10 07:49:01,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-01-10 07:49:01,254 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:01,254 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:01,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:01,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 07:49:01,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 07:49:01,257 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 07:49:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:01,258 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-01-10 07:49:01,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-01-10 07:49:01,258 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-01-10 07:49:01,258 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-01-10 07:49:01,258 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-01-10 07:49:01,258 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-01-10 07:49:01,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-01-10 07:49:01,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-01-10 07:49:01,258 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:01,258 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 07:49:01,259 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:01,259 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-01-10 07:49:01,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-01-10 07:49:01,259 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-01-10 07:49:01,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-01-10 07:49:01,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.01 07:49:01 BoogieIcfgContainer [2025-01-10 07:49:01,264 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-01-10 07:49:01,265 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 07:49:01,265 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 07:49:01,265 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 07:49:01,267 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:00" (3/4) ... [2025-01-10 07:49:01,268 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 07:49:01,270 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 07:49:01,272 INFO L158 Benchmark]: Toolchain (without parser) took 1150.27ms. Allocated memory is still 167.8MB. Free memory was 134.6MB in the beginning and 68.2MB in the end (delta: 66.4MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-01-10 07:49:01,272 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:01,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 125.20ms. Allocated memory is still 167.8MB. Free memory was 134.6MB in the beginning and 124.4MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 07:49:01,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.22ms. Allocated memory is still 167.8MB. Free memory was 124.4MB in the beginning and 123.5MB in the end (delta: 914.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:01,277 INFO L158 Benchmark]: Boogie Preprocessor took 21.12ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 122.6MB in the end (delta: 941.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:01,277 INFO L158 Benchmark]: RCFGBuilder took 145.77ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 112.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 07:49:01,277 INFO L158 Benchmark]: BuchiAutomizer took 829.97ms. Allocated memory is still 167.8MB. Free memory was 112.9MB in the beginning and 68.2MB in the end (delta: 44.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-01-10 07:49:01,277 INFO L158 Benchmark]: Witness Printer took 5.19ms. Allocated memory is still 167.8MB. Free memory is still 68.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:01,278 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 125.20ms. Allocated memory is still 167.8MB. Free memory was 134.6MB in the beginning and 124.4MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.22ms. Allocated memory is still 167.8MB. Free memory was 124.4MB in the beginning and 123.5MB in the end (delta: 914.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.12ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 122.6MB in the end (delta: 941.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 145.77ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 112.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 829.97ms. Allocated memory is still 167.8MB. Free memory was 112.9MB in the beginning and 68.2MB in the end (delta: 44.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 5.19ms. Allocated memory is still 167.8MB. Free memory is still 68.2MB. 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization No data available. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 5 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 35ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-01-10 07:49:01,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-01-10 07:49:01,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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