./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fc6cfc9bc139db752e72885619d5342f9725bf67cec8b7ca9da9022c75c17b44 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:18:52,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:18:52,335 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-09 15:18:52,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:18:52,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:18:52,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:18:52,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:18:52,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:18:52,382 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:18:52,382 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:18:52,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:18:52,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:18:52,383 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:18:52,383 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-09 15:18:52,383 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-09 15:18:52,383 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-09 15:18:52,383 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-09 15:18:52,384 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-09 15:18:52,384 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-09 15:18:52,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:18:52,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-09 15:18:52,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:18:52,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:18:52,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-09 15:18:52,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-09 15:18:52,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-09 15:18:52,386 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:18:52,386 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:18:52,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:18:52,387 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-09 15:18:52,387 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:18:52,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:18:52,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:18:52,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:18:52,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:18:52,388 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-09 15:18:52,388 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc6cfc9bc139db752e72885619d5342f9725bf67cec8b7ca9da9022c75c17b44 [2024-11-09 15:18:52,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:18:52,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:18:52,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:18:52,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:18:52,607 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:18:52,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2024-11-09 15:18:53,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:18:53,914 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:18:53,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2024-11-09 15:18:53,921 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57d07df02/8af641899abd4ed4b76eed12727ff30f/FLAG6ee654b7f [2024-11-09 15:18:54,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57d07df02/8af641899abd4ed4b76eed12727ff30f [2024-11-09 15:18:54,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:18:54,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:18:54,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:18:54,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:18:54,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:18:54,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733234f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54, skipping insertion in model container [2024-11-09 15:18:54,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:18:54,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:18:54,483 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:18:54,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:18:54,503 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:18:54,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54 WrapperNode [2024-11-09 15:18:54,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:18:54,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:18:54,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:18:54,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:18:54,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,522 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2024-11-09 15:18:54,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:18:54,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:18:54,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:18:54,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:18:54,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,534 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-09 15:18:54,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,534 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,535 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:18:54,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:18:54,538 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:18:54,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:18:54,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (1/1) ... [2024-11-09 15:18:54,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-09 15:18:54,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:18:54,565 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) [2024-11-09 15:18:54,567 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 [2024-11-09 15:18:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2024-11-09 15:18:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2024-11-09 15:18:54,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:18:54,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:18:54,639 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:18:54,640 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:18:54,702 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-09 15:18:54,702 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:18:54,715 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:18:54,715 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 15:18:54,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:18:54 BoogieIcfgContainer [2024-11-09 15:18:54,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:18:54,716 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-09 15:18:54,717 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-09 15:18:54,719 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-09 15:18:54,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-09 15:18:54,720 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 03:18:54" (1/3) ... [2024-11-09 15:18:54,721 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a2450f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 03:18:54, skipping insertion in model container [2024-11-09 15:18:54,721 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-09 15:18:54,721 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:18:54" (2/3) ... [2024-11-09 15:18:54,721 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a2450f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 03:18:54, skipping insertion in model container [2024-11-09 15:18:54,722 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-09 15:18:54,722 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:18:54" (3/3) ... [2024-11-09 15:18:54,723 INFO L332 chiAutomizerObserver]: Analyzing ICFG RecursiveNonterminating-1.c [2024-11-09 15:18:54,773 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-09 15:18:54,774 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-09 15:18:54,774 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-09 15:18:54,784 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-09 15:18:54,785 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-09 15:18:54,785 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-09 15:18:54,785 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-09 15:18:54,785 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-09 15:18:54,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2024-11-09 15:18:54,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-09 15:18:54,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-09 15:18:54,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-09 15:18:54,808 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-09 15:18:54,809 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-09 15:18:54,809 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-09 15:18:54,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2024-11-09 15:18:54,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-09 15:18:54,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-09 15:18:54,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-09 15:18:54,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-09 15:18:54,819 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-09 15:18:54,825 INFO L745 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1;havoc main_#t~nondet0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 8#L18true assume !!(main_~n~0#1 <= 2147483646); 13#L19true call rec(main_~n~0#1, 1 + main_~n~0#1);< 11#$Ultimate##0true [2024-11-09 15:18:54,825 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~x := #in~x;~y := #in~y; 3#L11true assume ~x <= 23 && ~x >= -42; 4#L12true call rec(2 * ~y - 2, 1 + ~x);< 11#$Ultimate##0true [2024-11-09 15:18:54,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:18:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1202731, now seen corresponding path program 1 times [2024-11-09 15:18:54,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:18:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616475612] [2024-11-09 15:18:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:18:54,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:18:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:18:54,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:18:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:18:54,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:18:54,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:18:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 29906, now seen corresponding path program 1 times [2024-11-09 15:18:54,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:18:54,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910883567] [2024-11-09 15:18:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:18:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:18:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:18:54,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:18:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:18:54,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:18:54,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:18:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1470820968, now seen corresponding path program 1 times [2024-11-09 15:18:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:18:54,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95957969] [2024-11-09 15:18:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:18:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:18:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:18:54,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:18:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:18:54,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:18:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:18:55,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:18:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:18:55,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 03:18:55 BoogieIcfgContainer [2024-11-09 15:18:55,181 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-09 15:18:55,182 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 15:18:55,182 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 15:18:55,183 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 15:18:55,183 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:18:54" (3/4) ... [2024-11-09 15:18:55,186 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-09 15:18:55,211 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 15:18:55,212 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 15:18:55,213 INFO L158 Benchmark]: Toolchain (without parser) took 866.95ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 73.4MB in the beginning and 136.9MB in the end (delta: -63.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:18:55,214 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:18:55,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.14ms. Allocated memory is still 142.6MB. Free memory was 73.0MB in the beginning and 62.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 15:18:55,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.93ms. Allocated memory is still 142.6MB. Free memory was 61.7MB in the beginning and 60.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:18:55,216 INFO L158 Benchmark]: Boogie Preprocessor took 14.99ms. Allocated memory is still 142.6MB. Free memory was 60.5MB in the beginning and 59.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:18:55,217 INFO L158 Benchmark]: RCFGBuilder took 177.76ms. Allocated memory is still 142.6MB. Free memory was 59.0MB in the beginning and 49.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 15:18:55,218 INFO L158 Benchmark]: BuchiAutomizer took 465.01ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 49.6MB in the beginning and 138.0MB in the end (delta: -88.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:18:55,218 INFO L158 Benchmark]: Witness Printer took 29.57ms. Allocated memory is still 186.6MB. Free memory was 138.0MB in the beginning and 136.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:18:55,221 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.14ms. Allocated memory is still 142.6MB. Free memory was 73.0MB in the beginning and 62.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.93ms. Allocated memory is still 142.6MB. Free memory was 61.7MB in the beginning and 60.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.99ms. Allocated memory is still 142.6MB. Free memory was 60.5MB in the beginning and 59.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 177.76ms. Allocated memory is still 142.6MB. Free memory was 59.0MB in the beginning and 49.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 465.01ms. Allocated memory was 142.6MB in the beginning and 186.6MB in the end (delta: 44.0MB). Free memory was 49.6MB in the beginning and 138.0MB in the end (delta: -88.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 29.57ms. Allocated memory is still 186.6MB. Free memory was 138.0MB in the beginning and 136.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L17] int n = __VERIFIER_nondet_int(); [L18] COND FALSE !(!(n<=2147483646)) VAL [n=0] [L19] CALL rec(n, n + 1) VAL [\old(x)=0, \old(y)=1] Loop: [L11] COND TRUE x <= 23 && x >= -42 [L12] CALL rec(2*y-2, x + 1) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int n = __VERIFIER_nondet_int(); [L18] COND FALSE !(!(n<=2147483646)) VAL [n=0] [L19] CALL rec(n, n + 1) VAL [\old(x)=0, \old(y)=1] Loop: [L11] COND TRUE x <= 23 && x >= -42 [L12] CALL rec(2*y-2, x + 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-09 15:18:55,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)