./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-lit/hh2012-ex2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8fc3dc66 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/hh2012-ex2b.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 33d07b945bedf27c99ae2e0c2f8250a85a01f89cb7fb82b15572e4678e4d0d97 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 20:22:02,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 20:22:02,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-17 20:22:02,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 20:22:02,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 20:22:02,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-17 20:22:02,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 20:22:02,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 20:22:02,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 20:22:02,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 20:22:02,255 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 20:22:02,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 20:22:02,256 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-17 20:22:02,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 20:22:02,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 20:22:02,257 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 20:22:02,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 20:22:02,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 20:22:02,258 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-17 20:22:02,258 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 -> 33d07b945bedf27c99ae2e0c2f8250a85a01f89cb7fb82b15572e4678e4d0d97 [2025-03-17 20:22:02,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 20:22:02,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 20:22:02,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 20:22:02,489 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 20:22:02,489 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 20:22:02,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/hh2012-ex2b.i [2025-03-17 20:22:03,582 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ca181da/b0f1bc0d9d9342318ec8902a064aad0f/FLAG0bd7ba65c [2025-03-17 20:22:03,790 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 20:22:03,791 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/hh2012-ex2b.i [2025-03-17 20:22:03,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ca181da/b0f1bc0d9d9342318ec8902a064aad0f/FLAG0bd7ba65c [2025-03-17 20:22:04,156 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ca181da/b0f1bc0d9d9342318ec8902a064aad0f [2025-03-17 20:22:04,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 20:22:04,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 20:22:04,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 20:22:04,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 20:22:04,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 20:22:04,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ef33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04, skipping insertion in model container [2025-03-17 20:22:04,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,174 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 20:22:04,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 20:22:04,287 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 20:22:04,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 20:22:04,308 INFO L204 MainTranslator]: Completed translation [2025-03-17 20:22:04,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04 WrapperNode [2025-03-17 20:22:04,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 20:22:04,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 20:22:04,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 20:22:04,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 20:22:04,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,329 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 38 [2025-03-17 20:22:04,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 20:22:04,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 20:22:04,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 20:22:04,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 20:22:04,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,349 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]. [2025-03-17 20:22:04,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,351 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,353 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 20:22:04,353 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 20:22:04,353 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 20:22:04,353 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 20:22:04,356 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (1/1) ... [2025-03-17 20:22:04,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 20:22:04,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 20:22:04,384 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) [2025-03-17 20:22:04,389 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 [2025-03-17 20:22:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 20:22:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 20:22:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 20:22:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 20:22:04,446 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 20:22:04,447 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 20:22:04,537 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-17 20:22:04,538 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 20:22:04,545 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 20:22:04,546 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 20:22:04,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:22:04 BoogieIcfgContainer [2025-03-17 20:22:04,547 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 20:22:04,547 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-17 20:22:04,547 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-17 20:22:04,551 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-17 20:22:04,552 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 20:22:04,552 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.03 08:22:04" (1/3) ... [2025-03-17 20:22:04,553 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@46f0027c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 08:22:04, skipping insertion in model container [2025-03-17 20:22:04,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 20:22:04,553 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 08:22:04" (2/3) ... [2025-03-17 20:22:04,554 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@46f0027c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 08:22:04, skipping insertion in model container [2025-03-17 20:22:04,554 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 20:22:04,554 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:22:04" (3/3) ... [2025-03-17 20:22:04,555 INFO L363 chiAutomizerObserver]: Analyzing ICFG hh2012-ex2b.i [2025-03-17 20:22:04,597 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-17 20:22:04,597 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-17 20:22:04,597 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-17 20:22:04,597 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-17 20:22:04,598 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-17 20:22:04,598 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-17 20:22:04,598 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-17 20:22:04,599 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-17 20:22:04,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2025-03-17 20:22:04,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2025-03-17 20:22:04,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 20:22:04,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 20:22:04,617 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-03-17 20:22:04,617 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-03-17 20:22:04,617 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-17 20:22:04,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2025-03-17 20:22:04,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2025-03-17 20:22:04,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 20:22:04,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 20:22:04,620 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-03-17 20:22:04,620 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-03-17 20:22:04,625 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post2#1, main_~n~0#1;main_~n~0#1 := 0;" [2025-03-17 20:22:04,626 INFO L754 eck$LassoCheckResult]: Loop: "assume true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~n~0#1 <= 60 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~nondet1#1;assume 0 == main_#t~nondet1#1 || 1 == main_#t~nondet1#1;" "assume !(0 != main_#t~nondet1#1 % 256);havoc main_#t~nondet1#1;" [2025-03-17 20:22:04,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:22:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2025-03-17 20:22:04,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:22:04,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083797087] [2025-03-17 20:22:04,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:22:04,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:22:04,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 20:22:04,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 20:22:04,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:22:04,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:22:04,698 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:22:04,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 20:22:04,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 20:22:04,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:22:04,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:22:04,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:22:04,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:22:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1445695, now seen corresponding path program 1 times [2025-03-17 20:22:04,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:22:04,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188391388] [2025-03-17 20:22:04,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:22:04,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:22:04,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 20:22:04,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 20:22:04,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:22:04,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:22:04,732 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:22:04,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 20:22:04,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 20:22:04,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:22:04,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:22:04,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:22:04,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 20:22:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash 45774703, now seen corresponding path program 1 times [2025-03-17 20:22:04,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 20:22:04,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146602352] [2025-03-17 20:22:04,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 20:22:04,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 20:22:04,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 20:22:04,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 20:22:04,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:22:04,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:22:04,763 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:22:04,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 20:22:04,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 20:22:04,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:22:04,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:22:04,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 20:22:04,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 20:22:04,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 20:22:04,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:22:04,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:22:04,966 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 20:22:04,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 20:22:04,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 20:22:04,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 20:22:04,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 20:22:04,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.03 08:22:04 BoogieIcfgContainer [2025-03-17 20:22:04,988 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-17 20:22:04,988 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 20:22:04,988 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 20:22:04,988 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 20:22:04,989 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 08:22:04" (3/4) ... [2025-03-17 20:22:04,990 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-03-17 20:22:05,014 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 20:22:05,014 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 20:22:05,017 INFO L158 Benchmark]: Toolchain (without parser) took 855.47ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 58.1MB in the end (delta: 46.8MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-17 20:22:05,017 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 20:22:05,019 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.58ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 95.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 20:22:05,019 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.31ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 93.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 20:22:05,019 INFO L158 Benchmark]: Boogie Preprocessor took 21.49ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 92.6MB in the end (delta: 388.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 20:22:05,019 INFO L158 Benchmark]: IcfgBuilder took 193.48ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 82.2MB in the end (delta: 10.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 20:22:05,020 INFO L158 Benchmark]: BuchiAutomizer took 440.47ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 60.5MB in the end (delta: 21.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 20:22:05,020 INFO L158 Benchmark]: Witness Printer took 26.04ms. Allocated memory is still 142.6MB. Free memory was 60.5MB in the beginning and 58.1MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 20:22:05,021 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.58ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 95.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.31ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 93.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.49ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 92.6MB in the end (delta: 388.8kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 193.48ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 82.2MB in the end (delta: 10.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 440.47ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 60.5MB in the end (delta: 21.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 26.04ms. Allocated memory is still 142.6MB. Free memory was 60.5MB in the beginning and 58.1MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. 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 0.3s 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 n = 0; VAL [n=0] Loop: [L17] COND TRUE 1 [L18] CALL __VERIFIER_assert(n <= 60) [L13] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(n <= 60) [L19] COND FALSE !(__VERIFIER_nondet_bool()) 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 n = 0; VAL [n=0] Loop: [L17] COND TRUE 1 [L18] CALL __VERIFIER_assert(n <= 60) [L13] COND FALSE !(!(cond)) [L18] RET __VERIFIER_assert(n <= 60) [L19] COND FALSE !(__VERIFIER_nondet_bool()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-03-17 20:22:05,037 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)