./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.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-invgen/SpamAssassin-loop.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 0ad27fb086e75bf8f5b08286d8e766d07abfe44ff39234568924cf55ade7a6d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 07:18:34,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 07:18:34,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-09 07:18:34,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 07:18:34,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 07:18:34,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-09 07:18:34,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 07:18:34,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 07:18:34,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 07:18:34,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 07:18:34,928 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 07:18:34,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 07:18:34,929 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-09 07:18:34,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-09 07:18:34,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 07:18:34,930 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 07:18:34,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 07:18:34,930 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 07:18:34,930 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-09 07:18:34,930 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 -> 0ad27fb086e75bf8f5b08286d8e766d07abfe44ff39234568924cf55ade7a6d5 [2025-03-09 07:18:35,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 07:18:35,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 07:18:35,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 07:18:35,166 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 07:18:35,166 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 07:18:35,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2025-03-09 07:18:36,234 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f97a59bf/5b973c812ea94649a2c1d08d40bf322f/FLAGa7245794c [2025-03-09 07:18:36,440 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 07:18:36,441 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2025-03-09 07:18:36,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f97a59bf/5b973c812ea94649a2c1d08d40bf322f/FLAGa7245794c [2025-03-09 07:18:36,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f97a59bf/5b973c812ea94649a2c1d08d40bf322f [2025-03-09 07:18:36,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 07:18:36,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 07:18:36,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 07:18:36,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 07:18:36,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 07:18:36,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:36,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49efd45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36, skipping insertion in model container [2025-03-09 07:18:36,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:36,805 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 07:18:36,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:18:36,918 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 07:18:36,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:18:36,947 INFO L204 MainTranslator]: Completed translation [2025-03-09 07:18:36,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36 WrapperNode [2025-03-09 07:18:36,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 07:18:36,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 07:18:36,949 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 07:18:36,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 07:18:36,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:36,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:36,976 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 19, calls inlined = 34, statements flattened = 200 [2025-03-09 07:18:36,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 07:18:36,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 07:18:36,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 07:18:36,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 07:18:36,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:36,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:36,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:36,994 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 07:18:36,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:36,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:37,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:37,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:37,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:37,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:37,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 07:18:37,006 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 07:18:37,006 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 07:18:37,007 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 07:18:37,007 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (1/1) ... [2025-03-09 07:18:37,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:18:37,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:18:37,030 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 07:18:37,031 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 07:18:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 07:18:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 07:18:37,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 07:18:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 07:18:37,087 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 07:18:37,088 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 07:18:37,240 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2025-03-09 07:18:37,241 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 07:18:37,253 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 07:18:37,253 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 07:18:37,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:18:37 BoogieIcfgContainer [2025-03-09 07:18:37,253 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 07:18:37,254 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-09 07:18:37,254 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-09 07:18:37,258 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-09 07:18:37,259 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:18:37,259 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.03 07:18:36" (1/3) ... [2025-03-09 07:18:37,260 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bc10989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:18:37, skipping insertion in model container [2025-03-09 07:18:37,260 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:18:37,260 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:18:36" (2/3) ... [2025-03-09 07:18:37,260 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bc10989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:18:37, skipping insertion in model container [2025-03-09 07:18:37,260 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:18:37,260 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:18:37" (3/3) ... [2025-03-09 07:18:37,261 INFO L363 chiAutomizerObserver]: Analyzing ICFG SpamAssassin-loop.i [2025-03-09 07:18:37,300 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-09 07:18:37,301 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-09 07:18:37,301 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-09 07:18:37,301 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-09 07:18:37,301 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-09 07:18:37,301 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-09 07:18:37,301 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-09 07:18:37,301 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-09 07:18:37,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 91 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 90 states have internal predecessors, (127), 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 07:18:37,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 85 [2025-03-09 07:18:37,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:18:37,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:18:37,322 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 07:18:37,322 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 07:18:37,322 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-09 07:18:37,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 91 states, 90 states have (on average 1.4111111111111112) internal successors, (127), 90 states have internal predecessors, (127), 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 07:18:37,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 85 [2025-03-09 07:18:37,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:18:37,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:18:37,325 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 07:18:37,325 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-03-09 07:18:37,329 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post4#1, main_#t~post5#1, main_#t~post6#1, main_#t~post7#1, main_#t~post8#1, main_#t~post9#1, main_#t~post10#1, main_~len~0#1, main_~i~0#1, main_~j~0#1, main_~bufsize~0#1, main_~limit~0#1;havoc main_~len~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~bufsize~0#1;havoc main_#t~nondet1#1;main_~bufsize~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !(main_~bufsize~0#1 < 0);havoc main_#t~nondet2#1;main_~len~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~limit~0#1 := main_~bufsize~0#1 - 4;main_~i~0#1 := 0;" [2025-03-09 07:18:37,329 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < main_~len~0#1;main_~j~0#1 := 0;" "assume !(main_~i~0#1 < main_~len~0#1 && main_~j~0#1 < main_~limit~0#1);" [2025-03-09 07:18:37,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:37,333 INFO L85 PathProgramCache]: Analyzing trace with hash 176722, now seen corresponding path program 1 times [2025-03-09 07:18:37,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:37,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490466306] [2025-03-09 07:18:37,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:37,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:37,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:18:37,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:18:37,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:37,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:37,393 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:37,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:18:37,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:18:37,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:37,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:37,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:37,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:37,421 INFO L85 PathProgramCache]: Analyzing trace with hash 5472, now seen corresponding path program 1 times [2025-03-09 07:18:37,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:37,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309992481] [2025-03-09 07:18:37,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:37,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:37,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:37,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:37,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:37,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:37,426 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:37,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-09 07:18:37,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-09 07:18:37,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:37,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:37,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:37,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:18:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash 169834353, now seen corresponding path program 1 times [2025-03-09 07:18:37,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:18:37,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640546778] [2025-03-09 07:18:37,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:18:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:18:37,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 07:18:37,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 07:18:37,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:37,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:37,441 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:37,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 07:18:37,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 07:18:37,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:37,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:37,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:18:37,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:18:37,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:18:37,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:37,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:37,617 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:18:37,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:18:37,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:18:37,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:18:37,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:18:37,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.03 07:18:37 BoogieIcfgContainer [2025-03-09 07:18:37,646 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-09 07:18:37,647 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 07:18:37,647 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 07:18:37,647 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 07:18:37,648 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:18:37" (3/4) ... [2025-03-09 07:18:37,649 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-03-09 07:18:37,677 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 07:18:37,677 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 07:18:37,680 INFO L158 Benchmark]: Toolchain (without parser) took 888.77ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 45.6MB in the end (delta: 60.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-09 07:18:37,680 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:18:37,680 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.82ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 94.7MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 07:18:37,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.62ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.8MB in the end (delta: 826.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:18:37,682 INFO L158 Benchmark]: Boogie Preprocessor took 27.17ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 91.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:18:37,682 INFO L158 Benchmark]: IcfgBuilder took 246.78ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 74.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 07:18:37,682 INFO L158 Benchmark]: BuchiAutomizer took 392.76ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 48.1MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 07:18:37,682 INFO L158 Benchmark]: Witness Printer took 30.60ms. Allocated memory is still 142.6MB. Free memory was 48.1MB in the beginning and 45.6MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:18:37,683 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.82ms. Allocated memory is still 142.6MB. Free memory was 106.4MB in the beginning and 94.7MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.62ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.8MB in the end (delta: 826.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.17ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 91.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 246.78ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 74.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 392.76ms. Allocated memory is still 142.6MB. Free memory was 74.5MB in the beginning and 48.1MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 30.60ms. Allocated memory is still 142.6MB. Free memory was 48.1MB in the beginning and 45.6MB in the end (delta: 2.5MB). 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 0.3s 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: 34]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L26] int len; [L27] int i; [L28] int j; [L29] int bufsize; [L30] bufsize = __VERIFIER_nondet_int() [L31] COND FALSE !(bufsize < 0) [L32] len = __VERIFIER_nondet_int() [L33] int limit = bufsize - 4; [L34] i = 0 VAL [bufsize=4, i=0, limit=0] Loop: [L34] COND TRUE i < len [L35] j = 0 [L35] COND FALSE !(i < len && j < limit) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 34]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L26] int len; [L27] int i; [L28] int j; [L29] int bufsize; [L30] bufsize = __VERIFIER_nondet_int() [L31] COND FALSE !(bufsize < 0) [L32] len = __VERIFIER_nondet_int() [L33] int limit = bufsize - 4; [L34] i = 0 VAL [bufsize=4, i=0, limit=0] Loop: [L34] COND TRUE i < len [L35] j = 0 [L35] COND FALSE !(i < len && j < limit) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-03-09 07:18:37,697 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)