./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/ldv-regression/fo_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 798a7b37 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/ldv-regression/fo_test.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 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:59:57,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:59:57,235 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-04 15:59:57,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:59:57,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:59:57,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-04 15:59:57,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:59:57,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:59:57,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:59:57,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:59:57,259 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:59:57,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:59:57,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:59:57,259 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:59:57,259 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-04 15:59:57,260 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-04 15:59:57,260 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-04 15:59:57,261 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-04 15:59:57,261 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-04 15:59:57,261 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-04 15:59:57,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:59:57,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:59:57,262 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:59:57,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:59:57,263 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-04 15:59:57,263 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:59:57,263 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:59:57,263 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:59:57,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:59:57,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:59:57,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:59:57,264 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-04 15:59:57,264 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 -> 311e8ee9583d2ef90ad7c5b34825dcb05dcd1a4fef3a842e7a9948bf014d4ce2 [2025-03-04 15:59:57,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:59:57,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:59:57,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:59:57,476 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:59:57,476 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:59:57,476 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/fo_test.i [2025-03-04 15:59:58,574 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8017fcf9e/abd2553378534f57a8acc677e81a308d/FLAG3d46f3c05 [2025-03-04 15:59:58,850 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:59:58,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/fo_test.i [2025-03-04 15:59:58,865 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8017fcf9e/abd2553378534f57a8acc677e81a308d/FLAG3d46f3c05 [2025-03-04 15:59:59,150 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8017fcf9e/abd2553378534f57a8acc677e81a308d [2025-03-04 15:59:59,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:59:59,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:59:59,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:59:59,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:59:59,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:59:59,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d6a3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59, skipping insertion in model container [2025-03-04 15:59:59,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,193 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:59:59,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:59:59,497 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:59:59,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:59:59,557 WARN L1212 FunctionHandler]: The following functions are not defined or handled internally: read [2025-03-04 15:59:59,563 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:59:59,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59 WrapperNode [2025-03-04 15:59:59,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:59:59,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:59:59,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:59:59,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:59:59,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,599 INFO L138 Inliner]: procedures = 229, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 63 [2025-03-04 15:59:59,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:59:59,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:59:59,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:59:59,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:59:59,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,609 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,618 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-03-04 15:59:59,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,627 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,630 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:59:59,630 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:59:59,630 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:59:59,630 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:59:59,631 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (1/1) ... [2025-03-04 15:59:59,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-04 15:59:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:59:59,655 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) [2025-03-04 15:59:59,658 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 [2025-03-04 15:59:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:59:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:59:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:59:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:59:59,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:59:59,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:59:59,858 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:59:59,859 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:59:59,927 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L985: havoc open_#t~nondet6#1; [2025-03-04 15:59:59,927 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L999: havoc l_read_#t~ret15#1; [2025-03-04 15:59:59,934 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2025-03-04 15:59:59,934 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:59:59,942 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:59:59,942 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:59:59,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:59:59 BoogieIcfgContainer [2025-03-04 15:59:59,942 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:59:59,943 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-04 15:59:59,943 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-04 15:59:59,946 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-04 15:59:59,947 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-04 15:59:59,947 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 04.03 03:59:59" (1/3) ... [2025-03-04 15:59:59,949 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68deca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 04.03 03:59:59, skipping insertion in model container [2025-03-04 15:59:59,950 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-04 15:59:59,950 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:59:59" (2/3) ... [2025-03-04 15:59:59,951 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68deca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 04.03 03:59:59, skipping insertion in model container [2025-03-04 15:59:59,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-04 15:59:59,951 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:59:59" (3/3) ... [2025-03-04 15:59:59,952 INFO L363 chiAutomizerObserver]: Analyzing ICFG fo_test.i [2025-03-04 15:59:59,990 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-04 15:59:59,990 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-04 15:59:59,990 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-04 15:59:59,990 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-04 15:59:59,990 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-04 15:59:59,990 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-04 15:59:59,990 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-04 15:59:59,991 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-04 15:59:59,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 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) [2025-03-04 16:00:00,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-03-04 16:00:00,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-04 16:00:00,009 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-04 16:00:00,013 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 16:00:00,013 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-03-04 16:00:00,013 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-04 16:00:00,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 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) [2025-03-04 16:00:00,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-03-04 16:00:00,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-04 16:00:00,016 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-04 16:00:00,016 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 16:00:00,017 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-03-04 16:00:00,020 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);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(8, 4);call write~init~int#1(117, 4, 0, 1);call write~init~int#1(110, 4, 1, 1);call write~init~int#1(107, 4, 2, 1);call write~init~int#1(110, 4, 3, 1);call write~init~int#1(111, 4, 4, 1);call write~init~int#1(119, 4, 5, 1);call write~init~int#1(110, 4, 6, 1);call write~init~int#1(0, 4, 7, 1);~globalState~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;main_#in~argc#1, main_#in~argv#1.base, main_#in~argv#1.offset := #in~argc#1, #in~argv#1.base, #in~argv#1.offset;havoc main_#res#1;havoc main_#t~ret12#1, main_#t~malloc13#1.base, main_#t~malloc13#1.offset, main_#t~ret14#1, main_~argc#1, main_~file~0#1, main_~cbuf~0#1.base, main_~cbuf~0#1.offset, main_~a~0#1;main_~argc#1 := main_#in~argc#1;assume { :begin_inline_l_open } true;l_open_#in~file#1.base, l_open_#in~file#1.offset, l_open_#in~flags#1 := 4, 0, 0;havoc l_open_#res#1;havoc l_open_#t~ret16#1, l_open_~file#1.base, l_open_~file#1.offset, l_open_~flags#1, l_open_~fd~0#1;l_open_~file#1.base, l_open_~file#1.offset := l_open_#in~file#1.base, l_open_#in~file#1.offset;l_open_~flags#1 := l_open_#in~flags#1;assume { :begin_inline_open } true;open_#in~__file#1.base, open_#in~__file#1.offset, open_#in~__oflag#1 := l_open_~file#1.base, l_open_~file#1.offset, l_open_~flags#1;havoc open_#res#1;havoc open_#t~nondet6#1, open_~__file#1.base, open_~__file#1.offset, open_~__oflag#1;open_~__file#1.base, open_~__file#1.offset := open_#in~__file#1.base, open_#in~__file#1.offset;open_~__oflag#1 := open_#in~__oflag#1;havoc open_#t~nondet6#1;open_#res#1 := open_#t~nondet6#1;havoc open_#t~nondet6#1;" "l_open_#t~ret16#1 := open_#res#1;havoc open_#t~nondet6#1, open_~__file#1.base, open_~__file#1.offset, open_~__oflag#1;havoc open_#in~__file#1.base, open_#in~__file#1.offset, open_#in~__oflag#1;assume { :end_inline_open } true;l_open_~fd~0#1 := l_open_#t~ret16#1;havoc l_open_#t~ret16#1;" "assume !(l_open_~fd~0#1 > 0);" "l_open_#res#1 := l_open_~fd~0#1;" "main_#t~ret12#1 := l_open_#res#1;havoc l_open_#t~ret16#1, l_open_~file#1.base, l_open_~file#1.offset, l_open_~flags#1, l_open_~fd~0#1;havoc l_open_#in~file#1.base, l_open_#in~file#1.offset, l_open_#in~flags#1;assume { :end_inline_l_open } true;main_~file~0#1 := main_#t~ret12#1;havoc main_#t~ret12#1;call main_#t~malloc13#1.base, main_#t~malloc13#1.offset := #Ultimate.allocOnHeap(100);main_~cbuf~0#1.base, main_~cbuf~0#1.offset := main_#t~malloc13#1.base, main_#t~malloc13#1.offset;havoc main_#t~malloc13#1.base, main_#t~malloc13#1.offset;assume { :begin_inline_l_read } true;l_read_#in~fd#1, l_read_#in~cbuf#1.base, l_read_#in~cbuf#1.offset, l_read_#in~count#1 := main_~file~0#1, main_~cbuf~0#1.base, main_~cbuf~0#1.offset, 99;havoc l_read_#res#1;havoc l_read_#t~ret15#1, l_read_~fd#1, l_read_~cbuf#1.base, l_read_~cbuf#1.offset, l_read_~count#1;l_read_~fd#1 := l_read_#in~fd#1;l_read_~cbuf#1.base, l_read_~cbuf#1.offset := l_read_#in~cbuf#1.base, l_read_#in~cbuf#1.offset;l_read_~count#1 := l_read_#in~count#1;" "assume 1 == ~globalState~0;" "assume { :begin_inline_read } true;read_#in~__fd#1, read_#in~__buf#1.base, read_#in~__buf#1.offset, read_#in~__nbytes#1 := l_read_~fd#1, l_read_~cbuf#1.base, l_read_~cbuf#1.offset, l_read_~count#1;havoc read_#res#1;" [2025-03-04 16:00:00,020 INFO L754 eck$LassoCheckResult]: Loop: "assume false;" [2025-03-04 16:00:00,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 16:00:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash 893687320, now seen corresponding path program 1 times [2025-03-04 16:00:00,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 16:00:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573338822] [2025-03-04 16:00:00,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 16:00:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 16:00:00,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 16:00:00,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 16:00:00,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 16:00:00,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 16:00:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 16:00:00,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 16:00:00,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573338822] [2025-03-04 16:00:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573338822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 16:00:00,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 16:00:00,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 16:00:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265315347] [2025-03-04 16:00:00,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 16:00:00,386 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-03-04 16:00:00,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 16:00:00,386 INFO L85 PathProgramCache]: Analyzing trace with hash 37, now seen corresponding path program 1 times [2025-03-04 16:00:00,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 16:00:00,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958421305] [2025-03-04 16:00:00,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 16:00:00,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 16:00:00,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-04 16:00:00,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-04 16:00:00,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 16:00:00,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 16:00:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 16:00:00,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 16:00:00,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958421305] [2025-03-04 16:00:00,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958421305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 16:00:00,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 16:00:00,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2025-03-04 16:00:00,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344100332] [2025-03-04 16:00:00,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 16:00:00,422 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-03-04 16:00:00,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 16:00:00,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 16:00:00,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 16:00:00,444 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2025-03-04 16:00:00,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 16:00:00,449 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2025-03-04 16:00:00,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 11 transitions. [2025-03-04 16:00:00,450 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-04 16:00:00,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2025-03-04 16:00:00,456 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-04 16:00:00,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-04 16:00:00,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-04 16:00:00,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-04 16:00:00,456 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-04 16:00:00,457 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-04 16:00:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 16:00:00,459 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-04 16:00:00,459 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-03-04 16:00:00,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-03-04 16:00:00,460 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-04 16:00:00,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-03-04 16:00:00,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 04.03 04:00:00 BoogieIcfgContainer [2025-03-04 16:00:00,465 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-04 16:00:00,466 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 16:00:00,466 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 16:00:00,466 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 16:00:00,466 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:59:59" (3/4) ... [2025-03-04 16:00:00,468 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 16:00:00,468 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 16:00:00,469 INFO L158 Benchmark]: Toolchain (without parser) took 1314.58ms. Allocated memory is still 142.6MB. Free memory was 105.1MB in the beginning and 85.0MB in the end (delta: 20.1MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2025-03-04 16:00:00,469 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 16:00:00,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.26ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 79.3MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 16:00:00,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.12ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 76.7MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 16:00:00,469 INFO L158 Benchmark]: Boogie Preprocessor took 29.53ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 74.8MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 16:00:00,470 INFO L158 Benchmark]: IcfgBuilder took 311.92ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 56.8MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 16:00:00,470 INFO L158 Benchmark]: BuchiAutomizer took 522.29ms. Allocated memory is still 142.6MB. Free memory was 56.8MB in the beginning and 85.7MB in the end (delta: -28.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 16:00:00,470 INFO L158 Benchmark]: Witness Printer took 2.52ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 85.0MB in the end (delta: 680.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 16:00:00,472 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.26ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 79.3MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.12ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 76.7MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.53ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 74.8MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 311.92ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 56.8MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 522.29ms. Allocated memory is still 142.6MB. Free memory was 56.8MB in the beginning and 85.7MB in the end (delta: -28.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.52ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 85.0MB in the end (delta: 680.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic). 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. 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: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-03-04 16:00:00,488 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 Result: TRUE