./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-lit/mine2017-ex4.7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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-lit/mine2017-ex4.7.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 51cb0ed4f3a380cdd7ae4c472320ddbca58dabad2572a56f851358e7417ed040 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 07:19:23,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 07:19:23,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-09 07:19:23,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 07:19:23,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 07:19:23,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-09 07:19:23,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 07:19:23,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 07:19:23,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 07:19:23,221 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 07:19:23,221 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 07:19:23,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 07:19:23,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 07:19:23,223 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 07:19:23,223 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-09 07:19:23,223 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-09 07:19:23,223 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-09 07:19:23,223 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-09 07:19:23,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-09 07:19:23,224 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 07:19:23,225 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 07:19:23,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 07:19:23,225 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-09 07:19:23,225 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 07:19:23,225 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 07:19:23,225 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 07:19:23,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 07:19:23,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 07:19:23,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 07:19:23,226 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-09 07:19:23,226 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/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 -> 51cb0ed4f3a380cdd7ae4c472320ddbca58dabad2572a56f851358e7417ed040 [2025-03-09 07:19:23,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 07:19:23,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 07:19:23,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 07:19:23,511 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 07:19:23,511 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 07:19:23,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/mine2017-ex4.7.i [2025-03-09 07:19:24,686 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27340a34f/d06c7911c8244ffabe2a32b0aa29f769/FLAG096b7f5ec [2025-03-09 07:19:24,893 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 07:19:24,895 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/mine2017-ex4.7.i [2025-03-09 07:19:24,916 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27340a34f/d06c7911c8244ffabe2a32b0aa29f769/FLAG096b7f5ec [2025-03-09 07:19:25,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27340a34f/d06c7911c8244ffabe2a32b0aa29f769 [2025-03-09 07:19:25,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 07:19:25,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 07:19:25,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 07:19:25,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 07:19:25,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 07:19:25,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b13a36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25, skipping insertion in model container [2025-03-09 07:19:25,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,279 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 07:19:25,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:19:25,416 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 07:19:25,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:19:25,444 INFO L204 MainTranslator]: Completed translation [2025-03-09 07:19:25,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25 WrapperNode [2025-03-09 07:19:25,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 07:19:25,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 07:19:25,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 07:19:25,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 07:19:25,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,476 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 44 [2025-03-09 07:19:25,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 07:19:25,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 07:19:25,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 07:19:25,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 07:19:25,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,502 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]. [2025-03-09 07:19:25,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,505 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,507 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 07:19:25,509 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 07:19:25,509 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 07:19:25,509 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 07:19:25,510 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (1/1) ... [2025-03-09 07:19:25,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:19:25,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:19:25,554 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) [2025-03-09 07:19:25,556 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 [2025-03-09 07:19:25,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 07:19:25,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 07:19:25,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 07:19:25,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 07:19:25,625 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 07:19:25,626 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 07:19:25,718 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-09 07:19:25,718 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 07:19:25,727 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 07:19:25,728 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 07:19:25,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:19:25 BoogieIcfgContainer [2025-03-09 07:19:25,728 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 07:19:25,729 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-09 07:19:25,729 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-09 07:19:25,732 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-09 07:19:25,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:19:25,733 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.03 07:19:25" (1/3) ... [2025-03-09 07:19:25,734 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@52b90e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:19:25, skipping insertion in model container [2025-03-09 07:19:25,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:19:25,734 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:19:25" (2/3) ... [2025-03-09 07:19:25,734 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@52b90e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:19:25, skipping insertion in model container [2025-03-09 07:19:25,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:19:25,734 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:19:25" (3/3) ... [2025-03-09 07:19:25,739 INFO L363 chiAutomizerObserver]: Analyzing ICFG mine2017-ex4.7.i [2025-03-09 07:19:25,788 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-09 07:19:25,788 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-09 07:19:25,788 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-09 07:19:25,788 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-09 07:19:25,788 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-09 07:19:25,788 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-09 07:19:25,788 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-09 07:19:25,788 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-09 07:19:25,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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) [2025-03-09 07:19:25,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2025-03-09 07:19:25,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:19:25,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:19:25,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 07:19:25,820 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 07:19:25,820 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-09 07:19:25,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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) [2025-03-09 07:19:25,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2025-03-09 07:19:25,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:19:25,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:19:25,823 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-03-09 07:19:25,823 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 07:19:25,830 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(22, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_~x~0#1;main_~x~0#1 := 0;" [2025-03-09 07:19:25,831 INFO L754 eck$LassoCheckResult]: Loop: "assume true;havoc main_#t~nondet1#1;assume 0 == main_#t~nondet1#1 || 1 == main_#t~nondet1#1;" "assume 0 == (if main_#t~nondet1#1 % 256 % 4294967296 <= 2147483647 then main_#t~nondet1#1 % 256 % 4294967296 else main_#t~nondet1#1 % 256 % 4294967296 - 4294967296);havoc main_#t~nondet1#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~x~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1;" "assume !(0 == __VERIFIER_assert_~cond#1);" "havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~x~0#1 <= 40 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1;" "assume !(0 == __VERIFIER_assert_~cond#1);" "havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;havoc main_#t~nondet2#1;assume 0 == main_#t~nondet2#1 || 1 == main_#t~nondet2#1;" "assume !(0 == (if main_#t~nondet2#1 % 256 % 4294967296 <= 2147483647 then main_#t~nondet2#1 % 256 % 4294967296 else main_#t~nondet2#1 % 256 % 4294967296 - 4294967296));havoc main_#t~nondet2#1;" [2025-03-09 07:19:25,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:19:25,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1856, now seen corresponding path program 1 times [2025-03-09 07:19:25,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:19:25,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722742330] [2025-03-09 07:19:25,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:19:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:19:25,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:19:25,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:19:25,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:19:25,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:19:25,908 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:19:25,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:19:25,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:19:25,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:19:25,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:19:25,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:19:25,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:19:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1133401582, now seen corresponding path program 1 times [2025-03-09 07:19:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:19:25,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442420098] [2025-03-09 07:19:25,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:19:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:19:25,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 07:19:25,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 07:19:25,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:19:25,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:19:25,950 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:19:25,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 07:19:25,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 07:19:25,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:19:25,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:19:25,970 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:19:25,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:19:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1964363251, now seen corresponding path program 1 times [2025-03-09 07:19:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:19:25,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108274420] [2025-03-09 07:19:25,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:19:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:19:25,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 07:19:25,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 07:19:25,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:19:25,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:19:25,995 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:19:25,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 07:19:26,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 07:19:26,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:19:26,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:19:26,005 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:19:26,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:19:26,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:19:26,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:19:26,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:19:26,197 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:19:26,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:19:26,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:19:26,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:19:26,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:19:26,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.03 07:19:26 BoogieIcfgContainer [2025-03-09 07:19:26,220 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-09 07:19:26,221 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 07:19:26,221 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 07:19:26,221 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 07:19:26,222 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:19:25" (3/4) ... [2025-03-09 07:19:26,224 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-03-09 07:19:26,247 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 07:19:26,247 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 07:19:26,253 INFO L158 Benchmark]: Toolchain (without parser) took 990.48ms. Allocated memory is still 142.6MB. Free memory was 107.6MB in the beginning and 55.2MB in the end (delta: 52.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-09 07:19:26,253 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:19:26,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.01ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 97.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 07:19:26,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.45ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 95.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:19:26,254 INFO L158 Benchmark]: Boogie Preprocessor took 31.03ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 94.8MB in the end (delta: 709.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:19:26,254 INFO L158 Benchmark]: IcfgBuilder took 219.08ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 83.8MB in the end (delta: 11.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 07:19:26,254 INFO L158 Benchmark]: BuchiAutomizer took 491.65ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 57.6MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 07:19:26,254 INFO L158 Benchmark]: Witness Printer took 26.60ms. Allocated memory is still 142.6MB. Free memory was 57.6MB in the beginning and 55.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:19:26,258 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 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.01ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 97.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.45ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 95.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.03ms. Allocated memory is still 142.6MB. Free memory was 95.5MB in the beginning and 94.8MB in the end (delta: 709.0kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 219.08ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 83.8MB in the end (delta: 11.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 491.65ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 57.6MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 26.60ms. Allocated memory is still 142.6MB. Free memory was 57.6MB in the beginning and 55.2MB in the end (delta: 2.4MB). 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: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L16] int x = 0; VAL [x=0] Loop: [L17] COND TRUE __VERIFIER_nondet_bool() == 0 [L17] COND TRUE __VERIFIER_nondet_bool() == 0 [L18] CALL __VERIFIER_assert(0 <= x) [L13] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(0 <= x) [L19] CALL __VERIFIER_assert(x <= 40) [L13] COND FALSE !(!(cond)) [L19] RET __VERIFIER_assert(x <= 40) [L20] COND FALSE !(__VERIFIER_nondet_bool() == 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L16] int x = 0; VAL [x=0] Loop: [L17] COND TRUE __VERIFIER_nondet_bool() == 0 [L17] COND TRUE __VERIFIER_nondet_bool() == 0 [L18] CALL __VERIFIER_assert(0 <= x) [L13] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(0 <= x) [L19] CALL __VERIFIER_assert(x <= 40) [L13] COND FALSE !(!(cond)) [L19] RET __VERIFIER_assert(x <= 40) [L20] COND FALSE !(__VERIFIER_nondet_bool() == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-03-09 07:19:26,273 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)