./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-bwb/reverse-bits1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-bwb/reverse-bits1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3e71bbd54e7c2fb1c47dcb82c9eb8e40d9fc6da26d5ad2a71ce148ceb3cd82ca --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:58:12,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:58:12,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-02-06 18:58:12,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:58:12,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:58:12,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-06 18:58:12,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:58:12,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:58:12,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:58:12,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:58:12,733 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:58:12,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:58:12,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:58:12,733 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:58:12,733 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-06 18:58:12,734 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-06 18:58:12,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:58:12,735 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:58:12,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:58:12,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:58:12,736 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:58:12,736 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-06 18:58:12,736 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e71bbd54e7c2fb1c47dcb82c9eb8e40d9fc6da26d5ad2a71ce148ceb3cd82ca [2025-02-06 18:58:12,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:58:12,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:58:12,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:58:12,971 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:58:12,971 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:58:12,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-bwb/reverse-bits1.i [2025-02-06 18:58:14,075 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ad921489d/ecd855b6f6aa4421ad86df23fb4b9466/FLAG9dd923356 [2025-02-06 18:58:14,300 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:58:14,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-bwb/reverse-bits1.i [2025-02-06 18:58:14,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ad921489d/ecd855b6f6aa4421ad86df23fb4b9466/FLAG9dd923356 [2025-02-06 18:58:14,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ad921489d/ecd855b6f6aa4421ad86df23fb4b9466 [2025-02-06 18:58:14,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:58:14,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:58:14,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:58:14,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:58:14,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:58:14,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f13129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14, skipping insertion in model container [2025-02-06 18:58:14,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:58:14,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:58:14,772 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:58:14,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:58:14,795 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:58:14,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14 WrapperNode [2025-02-06 18:58:14,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:58:14,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:58:14,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:58:14,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:58:14,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,816 INFO L138 Inliner]: procedures = 5, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2025-02-06 18:58:14,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:58:14,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:58:14,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:58:14,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:58:14,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,829 INFO L175 MemorySlicer]: No memory access in input program. [2025-02-06 18:58:14,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,834 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:58:14,842 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:58:14,843 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:58:14,843 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:58:14,844 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (1/1) ... [2025-02-06 18:58:14,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:58:14,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:58:14,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:58:14,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-06 18:58:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:58:14,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:58:14,930 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:58:14,932 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:58:15,056 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2025-02-06 18:58:15,057 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:58:15,070 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:58:15,070 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:58:15,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:58:15 BoogieIcfgContainer [2025-02-06 18:58:15,070 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:58:15,071 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-06 18:58:15,071 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-06 18:58:15,075 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-06 18:58:15,075 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 18:58:15,075 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.02 06:58:14" (1/3) ... [2025-02-06 18:58:15,076 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e7476a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 06:58:15, skipping insertion in model container [2025-02-06 18:58:15,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 18:58:15,076 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:58:14" (2/3) ... [2025-02-06 18:58:15,076 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e7476a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 06:58:15, skipping insertion in model container [2025-02-06 18:58:15,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 18:58:15,076 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:58:15" (3/3) ... [2025-02-06 18:58:15,077 INFO L363 chiAutomizerObserver]: Analyzing ICFG reverse-bits1.i [2025-02-06 18:58:15,117 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-06 18:58:15,117 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-06 18:58:15,117 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-06 18:58:15,117 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-06 18:58:15,117 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-06 18:58:15,117 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-06 18:58:15,117 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-06 18:58:15,117 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-06 18:58:15,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 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) [2025-02-06 18:58:15,134 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-02-06 18:58:15,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:58:15,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:58:15,139 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 18:58:15,139 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 18:58:15,139 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-06 18:58:15,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 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) [2025-02-06 18:58:15,140 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-02-06 18:58:15,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:58:15,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:58:15,141 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 18:58:15,142 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 18:58:15,148 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;~v~0 := 0;~r~0 := 0;~s~0 := 31;~z~0 := 0;~y~0 := 0;~x~0 := 0;~n~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~bitwise4#1, main_#t~bitwise5#1, main_#t~post6#1, main_#t~bitwise7#1;havoc main_#t~nondet0#1;~v~0 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;~n~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;~z~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;~x~0 := main_#t~nondet3#1;havoc main_#t~nondet3#1;~r~0 := ~v~0;~y~0 := ~v~0 - 1;" [2025-02-06 18:58:15,148 INFO L754 eck$LassoCheckResult]: Loop: "assume true;" "assume 0 == ~x~0 || 0 == ~v~0 - ~y~0 - 1;main_#t~bitwise4#1 := 0;" "assume 0 != main_#t~bitwise4#1;havoc main_#t~bitwise4#1;~y~0 := 1;" [2025-02-06 18:58:15,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2016, now seen corresponding path program 1 times [2025-02-06 18:58:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:58:15,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189868406] [2025-02-06 18:58:15,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:58:15,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:58:15,205 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:58:15,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:58:15,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,216 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:58:15,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:58:15,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:58:15,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:58:15,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash 59388, now seen corresponding path program 1 times [2025-02-06 18:58:15,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:58:15,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197200265] [2025-02-06 18:58:15,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:58:15,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:58:15,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:58:15,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:58:15,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:58:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:58:15,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:58:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197200265] [2025-02-06 18:58:15,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197200265] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:58:15,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:58:15,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:58:15,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423145667] [2025-02-06 18:58:15,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:58:15,294 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-06 18:58:15,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:58:15,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:58:15,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:58:15,315 INFO L87 Difference]: Start difference. First operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2025-02-06 18:58:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 18:58:15,343 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2025-02-06 18:58:15,344 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2025-02-06 18:58:15,345 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-02-06 18:58:15,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 19 transitions. [2025-02-06 18:58:15,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2025-02-06 18:58:15,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2025-02-06 18:58:15,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2025-02-06 18:58:15,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 18:58:15,353 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-02-06 18:58:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2025-02-06 18:58:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-02-06 18:58:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 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) [2025-02-06 18:58:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2025-02-06 18:58:15,371 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-02-06 18:58:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:58:15,375 INFO L432 stractBuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-02-06 18:58:15,375 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-06 18:58:15,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2025-02-06 18:58:15,376 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-02-06 18:58:15,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:58:15,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:58:15,377 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 18:58:15,377 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-02-06 18:58:15,377 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;~v~0 := 0;~r~0 := 0;~s~0 := 31;~z~0 := 0;~y~0 := 0;~x~0 := 0;~n~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~bitwise4#1, main_#t~bitwise5#1, main_#t~post6#1, main_#t~bitwise7#1;havoc main_#t~nondet0#1;~v~0 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;~n~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;~z~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;~x~0 := main_#t~nondet3#1;havoc main_#t~nondet3#1;~r~0 := ~v~0;~y~0 := ~v~0 - 1;" [2025-02-06 18:58:15,377 INFO L754 eck$LassoCheckResult]: Loop: "assume true;" "assume !(0 == ~x~0 || 0 == ~v~0 - ~y~0 - 1);" "assume ~x~0 == ~v~0 - ~y~0 - 1;main_#t~bitwise4#1 := ~x~0;" "assume 0 != main_#t~bitwise4#1;havoc main_#t~bitwise4#1;~y~0 := 1;" [2025-02-06 18:58:15,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2016, now seen corresponding path program 2 times [2025-02-06 18:58:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:58:15,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818007484] [2025-02-06 18:58:15,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:58:15,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:58:15,382 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:58:15,386 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:58:15,386 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:58:15,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,386 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:58:15,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:58:15,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:58:15,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:58:15,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:15,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1845918, now seen corresponding path program 1 times [2025-02-06 18:58:15,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:58:15,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692093527] [2025-02-06 18:58:15,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:58:15,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:58:15,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:58:15,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:58:15,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,396 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:58:15,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:58:15,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:58:15,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:58:15,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1862740733, now seen corresponding path program 1 times [2025-02-06 18:58:15,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:58:15,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94555906] [2025-02-06 18:58:15,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:58:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:58:15,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:58:15,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:58:15,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:58:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:58:15,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:58:15,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94555906] [2025-02-06 18:58:15,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94555906] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:58:15,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:58:15,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:58:15,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102917567] [2025-02-06 18:58:15,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:58:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:58:15,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:58:15,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:58:15,539 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-02-06 18:58:15,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 18:58:15,548 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2025-02-06 18:58:15,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2025-02-06 18:58:15,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-02-06 18:58:15,549 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2025-02-06 18:58:15,549 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2025-02-06 18:58:15,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2025-02-06 18:58:15,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2025-02-06 18:58:15,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 18:58:15,549 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-02-06 18:58:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2025-02-06 18:58:15,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-02-06 18:58:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 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) [2025-02-06 18:58:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-02-06 18:58:15,550 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-02-06 18:58:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:58:15,551 INFO L432 stractBuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-02-06 18:58:15,551 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-06 18:58:15,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2025-02-06 18:58:15,551 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-02-06 18:58:15,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:58:15,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:58:15,551 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:58:15,551 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 18:58:15,552 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;~v~0 := 0;~r~0 := 0;~s~0 := 31;~z~0 := 0;~y~0 := 0;~x~0 := 0;~n~0 := 0;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~bitwise4#1, main_#t~bitwise5#1, main_#t~post6#1, main_#t~bitwise7#1;havoc main_#t~nondet0#1;~v~0 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;~n~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;~z~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;~x~0 := main_#t~nondet3#1;havoc main_#t~nondet3#1;~r~0 := ~v~0;~y~0 := ~v~0 - 1;" "assume true;" "assume 0 == ~x~0 || 0 == ~v~0 - ~y~0 - 1;main_#t~bitwise4#1 := 0;" "assume !(0 != main_#t~bitwise4#1);havoc main_#t~bitwise4#1;" "~v~0 := ~v~0 / 2;" [2025-02-06 18:58:15,552 INFO L754 eck$LassoCheckResult]: Loop: "assume ~v~0 > 0;~r~0 := 2 * ~r~0;~z~0 := ~v~0 % 2;" "assume 0 == ~r~0 || ~r~0 == ~z~0;main_#t~bitwise5#1 := ~z~0;" "~r~0 := main_#t~bitwise5#1;havoc main_#t~bitwise5#1;main_#t~post6#1 := ~s~0;~s~0 := main_#t~post6#1 - 1;havoc main_#t~post6#1;~v~0 := ~v~0 / 2;" [2025-02-06 18:58:15,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1862735831, now seen corresponding path program 1 times [2025-02-06 18:58:15,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:58:15,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252780923] [2025-02-06 18:58:15,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:58:15,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:58:15,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:58:15,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:58:15,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,559 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:58:15,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:58:15,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:58:15,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,564 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:58:15,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:15,564 INFO L85 PathProgramCache]: Analyzing trace with hash 47472, now seen corresponding path program 1 times [2025-02-06 18:58:15,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:58:15,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171963278] [2025-02-06 18:58:15,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:58:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:58:15,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:58:15,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:58:15,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,571 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:58:15,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:58:15,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:58:15,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:58:15,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:58:15,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1785694682, now seen corresponding path program 1 times [2025-02-06 18:58:15,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:58:15,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332825044] [2025-02-06 18:58:15,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:58:15,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:58:15,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:58:15,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:58:15,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:15,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:58:15,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:58:15,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:58:15,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332825044] [2025-02-06 18:58:15,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332825044] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:58:15,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:58:15,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 18:58:15,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683177116] [2025-02-06 18:58:15,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:58:15,765 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:58:15,765 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:58:15,766 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:58:15,766 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:58:15,766 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 18:58:15,766 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:58:15,766 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:58:15,766 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:58:15,766 INFO L132 ssoRankerPreferences]: Filename of dumped script: reverse-bits1.i_Iteration3_Loop [2025-02-06 18:58:15,766 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:58:15,767 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:58:15,775 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:58:15,780 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:58:15,790 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:58:15,792 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:58:15,895 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:58:15,896 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 18:58:15,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:58:15,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:58:15,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:58:15,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-06 18:58:15,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:58:15,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:58:15,920 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 18:58:15,921 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~bitwise5#1=0} Honda state: {ULTIMATE.start_main_#t~bitwise5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 18:58:15,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-06 18:58:15,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:58:15,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:58:15,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:58:15,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-06 18:58:15,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:58:15,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:58:15,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:58:15,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:58:15,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:58:15,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:58:15,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-06 18:58:15,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 18:58:15,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:58:16,015 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 18:58:16,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-06 18:58:16,020 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:58:16,020 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:58:16,021 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:58:16,021 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:58:16,021 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 18:58:16,021 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:58:16,021 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:58:16,021 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:58:16,021 INFO L132 ssoRankerPreferences]: Filename of dumped script: reverse-bits1.i_Iteration3_Loop [2025-02-06 18:58:16,021 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:58:16,021 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:58:16,022 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:58:16,033 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:58:16,035 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:58:16,037 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:58:16,119 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:58:16,121 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 18:58:16,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:58:16,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:58:16,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:58:16,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-06 18:58:16,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:58:16,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:58:16,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 18:58:16,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:58:16,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:58:16,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:58:16,151 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 18:58:16,151 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 18:58:16,154 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 18:58:16,159 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2025-02-06 18:58:16,161 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-02-06 18:58:16,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:58:16,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:58:16,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:58:16,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-06 18:58:16,167 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 18:58:16,167 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 18:58:16,167 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 18:58:16,168 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(~v~0) = 1*~v~0 Supporting invariants [] [2025-02-06 18:58:16,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-06 18:58:16,181 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 18:58:16,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:58:16,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:58:16,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:58:16,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:16,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:58:16,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 18:58:16,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:58:16,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:58:16,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:58:16,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:58:16,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:58:16,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:58:16,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:58:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:58:16,235 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-06 18:58:16,235 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2025-02-06 18:58:16,261 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Result 16 states and 21 transitions. Complement of second has 4 states. [2025-02-06 18:58:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-06 18:58:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2025-02-06 18:58:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2025-02-06 18:58:16,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-06 18:58:16,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:58:16,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2025-02-06 18:58:16,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:58:16,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 6 letters. Loop has 6 letters. [2025-02-06 18:58:16,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:58:16,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2025-02-06 18:58:16,267 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 18:58:16,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2025-02-06 18:58:16,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-06 18:58:16,267 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-06 18:58:16,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-06 18:58:16,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 18:58:16,268 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 18:58:16,268 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 18:58:16,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:58:16,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:58:16,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:58:16,268 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2025-02-06 18:58:16,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 18:58:16,268 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-06 18:58:16,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-06 18:58:16,269 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 18:58:16,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 18:58:16,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-06 18:58:16,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-06 18:58:16,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-06 18:58:16,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 18:58:16,269 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 18:58:16,269 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 18:58:16,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 18:58:16,269 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 18:58:16,270 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-06 18:58:16,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-06 18:58:16,270 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 18:58:16,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-06 18:58:16,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.02 06:58:16 BoogieIcfgContainer [2025-02-06 18:58:16,275 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-06 18:58:16,276 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:58:16,276 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:58:16,276 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:58:16,277 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:58:15" (3/4) ... [2025-02-06 18:58:16,278 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 18:58:16,279 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:58:16,279 INFO L158 Benchmark]: Toolchain (without parser) took 1638.67ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 41.5MB in the end (delta: 49.0MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2025-02-06 18:58:16,280 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:58:16,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.12ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 80.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:58:16,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.47ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 78.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:58:16,280 INFO L158 Benchmark]: Boogie Preprocessor took 24.16ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 78.0MB in the end (delta: 755.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:58:16,280 INFO L158 Benchmark]: IcfgBuilder took 228.01ms. Allocated memory is still 117.4MB. Free memory was 78.0MB in the beginning and 65.6MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:58:16,281 INFO L158 Benchmark]: BuchiAutomizer took 1204.56ms. Allocated memory is still 117.4MB. Free memory was 65.6MB in the beginning and 41.5MB in the end (delta: 24.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2025-02-06 18:58:16,281 INFO L158 Benchmark]: Witness Printer took 2.66ms. Allocated memory is still 117.4MB. Free memory was 41.5MB in the beginning and 41.5MB in the end (delta: 32.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:58:16,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.12ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 80.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.47ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 78.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.16ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 78.0MB in the end (delta: 755.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 228.01ms. Allocated memory is still 117.4MB. Free memory was 78.0MB in the beginning and 65.6MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1204.56ms. Allocated memory is still 117.4MB. Free memory was 65.6MB in the beginning and 41.5MB in the end (delta: 24.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 2.66ms. Allocated memory is still 117.4MB. Free memory was 41.5MB in the beginning and 41.5MB in the end (delta: 32.3kB). 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 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function v and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 44 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div442 bol100 ite100 ukn100 eq134 hnf95 smp41 dnf100 smp100 tf104 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 45ms VariablesStem: 0 VariablesLoop: 7 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-06 18:58:16,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-06 18:58:16,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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