./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-bwb/reverse-bits1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-bwb/reverse-bits1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 3e71bbd54e7c2fb1c47dcb82c9eb8e40d9fc6da26d5ad2a71ce148ceb3cd82ca --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:55:02,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:55:02,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-13 16:55:02,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:55:02,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:55:02,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:55:02,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:55:02,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:55:02,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:55:02,130 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:55:02,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:55:02,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:55:02,132 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:55:02,132 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-13 16:55:02,133 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-13 16:55:02,133 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-13 16:55:02,133 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-13 16:55:02,134 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-13 16:55:02,134 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-13 16:55:02,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:55:02,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-13 16:55:02,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:55:02,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:55:02,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-13 16:55:02,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-13 16:55:02,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-13 16:55:02,137 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:55:02,137 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:55:02,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:55:02,138 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-13 16:55:02,138 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:55:02,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:55:02,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:55:02,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:55:02,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:55:02,140 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-13 16:55:02,141 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e71bbd54e7c2fb1c47dcb82c9eb8e40d9fc6da26d5ad2a71ce148ceb3cd82ca [2024-10-13 16:55:02,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:55:02,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:55:02,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:55:02,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:55:02,473 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:55:02,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-bwb/reverse-bits1.i [2024-10-13 16:55:03,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:55:04,002 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:55:04,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-bwb/reverse-bits1.i [2024-10-13 16:55:04,012 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e027b7f08/78027f9948d74f8e9cfed79f7edcca49/FLAG14f16b38d [2024-10-13 16:55:04,030 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e027b7f08/78027f9948d74f8e9cfed79f7edcca49 [2024-10-13 16:55:04,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:55:04,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:55:04,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:55:04,040 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:55:04,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:55:04,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b2821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04, skipping insertion in model container [2024-10-13 16:55:04,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,079 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:55:04,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:55:04,254 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:55:04,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:55:04,281 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:55:04,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04 WrapperNode [2024-10-13 16:55:04,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:55:04,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:55:04,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:55:04,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:55:04,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,315 INFO L138 Inliner]: procedures = 5, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2024-10-13 16:55:04,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:55:04,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:55:04,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:55:04,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:55:04,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,331 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-13 16:55:04,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:55:04,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:55:04,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:55:04,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:55:04,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (1/1) ... [2024-10-13 16:55:04,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:04,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:55:04,381 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) [2024-10-13 16:55:04,385 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 [2024-10-13 16:55:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:55:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:55:04,497 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:55:04,499 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:55:04,707 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2024-10-13 16:55:04,707 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:55:04,753 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:55:04,757 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:55:04,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:55:04 BoogieIcfgContainer [2024-10-13 16:55:04,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:55:04,759 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-13 16:55:04,759 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-13 16:55:04,763 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-13 16:55:04,767 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:55:04,767 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 04:55:04" (1/3) ... [2024-10-13 16:55:04,768 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2532ae19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 04:55:04, skipping insertion in model container [2024-10-13 16:55:04,770 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:55:04,770 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:04" (2/3) ... [2024-10-13 16:55:04,771 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2532ae19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 04:55:04, skipping insertion in model container [2024-10-13 16:55:04,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:55:04,771 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:55:04" (3/3) ... [2024-10-13 16:55:04,774 INFO L332 chiAutomizerObserver]: Analyzing ICFG reverse-bits1.i [2024-10-13 16:55:04,836 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-13 16:55:04,837 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-13 16:55:04,837 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-13 16:55:04,837 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-13 16:55:04,837 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-13 16:55:04,838 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-13 16:55:04,838 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-13 16:55:04,838 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-13 16:55:04,842 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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) [2024-10-13 16:55:04,859 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-13 16:55:04,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:55:04,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:55:04,865 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:55:04,865 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-13 16:55:04,865 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-13 16:55:04,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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) [2024-10-13 16:55:04,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-13 16:55:04,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:55:04,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:55:04,869 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:55:04,869 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-13 16:55:04,876 INFO L745 eck$LassoCheckResult]: Stem: 18#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;~v~0 := 0;~r~0 := 0;~s~0 := 31;~z~0 := 0;~y~0 := 0;~x~0 := 0;~n~0 := 0; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~bitwise4#1, main_#t~bitwise5#1, main_#t~post6#1, main_#t~bitwise7#1;havoc main_#t~nondet0#1;~v~0 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;~n~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;~z~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;~x~0 := main_#t~nondet3#1;havoc main_#t~nondet3#1;~r~0 := ~v~0;~y~0 := ~v~0 - 1; 19#L18-7true [2024-10-13 16:55:04,877 INFO L747 eck$LassoCheckResult]: Loop: 19#L18-7true assume 0 == ~x~0 || 0 == ~v~0 - ~y~0 - 1;main_#t~bitwise4#1 := 0; 5#L18-5true assume !!(0 != main_#t~bitwise4#1);havoc main_#t~bitwise4#1;~y~0 := 1; 19#L18-7true [2024-10-13 16:55:04,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-13 16:55:04,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:04,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500295831] [2024-10-13 16:55:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:04,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:04,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:55:05,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:05,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1263, now seen corresponding path program 1 times [2024-10-13 16:55:05,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:05,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884262497] [2024-10-13 16:55:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:05,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:55:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:55:05,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:55:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884262497] [2024-10-13 16:55:05,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884262497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:55:05,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:55:05,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:55:05,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498193381] [2024-10-13 16:55:05,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:55:05,089 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 16:55:05,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:55:05,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:55:05,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:55:05,119 INFO L87 Difference]: Start difference. First operand has 21 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-10-13 16:55:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 16:55:05,137 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-10-13 16:55:05,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2024-10-13 16:55:05,140 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-13 16:55:05,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 13 states and 18 transitions. [2024-10-13 16:55:05,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-10-13 16:55:05,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2024-10-13 16:55:05,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2024-10-13 16:55:05,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 16:55:05,144 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-10-13 16:55:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2024-10-13 16:55:05,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-13 16:55:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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) [2024-10-13 16:55:05,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2024-10-13 16:55:05,164 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-10-13 16:55:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:55:05,171 INFO L425 stractBuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-10-13 16:55:05,171 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-13 16:55:05,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2024-10-13 16:55:05,172 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-13 16:55:05,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:55:05,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:55:05,173 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 16:55:05,173 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-13 16:55:05,173 INFO L745 eck$LassoCheckResult]: Stem: 61#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;~v~0 := 0;~r~0 := 0;~s~0 := 31;~z~0 := 0;~y~0 := 0;~x~0 := 0;~n~0 := 0; 62#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~bitwise4#1, main_#t~bitwise5#1, main_#t~post6#1, main_#t~bitwise7#1;havoc main_#t~nondet0#1;~v~0 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;~n~0 := main_#t~nondet1#1;havoc main_#t~nondet1#1;havoc main_#t~nondet2#1;~z~0 := main_#t~nondet2#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;~x~0 := main_#t~nondet3#1;havoc main_#t~nondet3#1;~r~0 := ~v~0;~y~0 := ~v~0 - 1; 63#L18-7 [2024-10-13 16:55:05,173 INFO L747 eck$LassoCheckResult]: Loop: 63#L18-7 assume !(0 == ~x~0 || 0 == ~v~0 - ~y~0 - 1); 57#L18-2 assume ~x~0 == ~v~0 - ~y~0 - 1;main_#t~bitwise4#1 := ~x~0; 59#L18-5 assume !!(0 != main_#t~bitwise4#1);havoc main_#t~bitwise4#1;~y~0 := 1; 63#L18-7 [2024-10-13 16:55:05,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:05,174 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-10-13 16:55:05,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:05,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882428870] [2024-10-13 16:55:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:05,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:55:05,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash 40819, now seen corresponding path program 1 times [2024-10-13 16:55:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:05,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480602972] [2024-10-13 16:55:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:55:05,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:05,210 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2024-10-13 16:55:05,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:05,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197271174] [2024-10-13 16:55:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:05,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:55:05,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:55:05,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:55:05,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197271174] [2024-10-13 16:55:05,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197271174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:55:05,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:55:05,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:55:05,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806752009] [2024-10-13 16:55:05,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:55:05,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:55:05,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:55:05,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:55:05,326 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-13 16:55:05,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 16:55:05,339 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2024-10-13 16:55:05,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2024-10-13 16:55:05,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-13 16:55:05,340 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 12 transitions. [2024-10-13 16:55:05,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-10-13 16:55:05,341 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-10-13 16:55:05,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2024-10-13 16:55:05,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 16:55:05,341 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-13 16:55:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2024-10-13 16:55:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-10-13 16:55:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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) [2024-10-13 16:55:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2024-10-13 16:55:05,343 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-13 16:55:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:55:05,345 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-13 16:55:05,345 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-13 16:55:05,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2024-10-13 16:55:05,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-13 16:55:05,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:55:05,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:55:05,346 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-10-13 16:55:05,346 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-13 16:55:05,347 INFO L745 eck$LassoCheckResult]: Stem: 89#$Ultimate##0 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; 90#L-1 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; 91#L18-7 assume 0 == ~x~0 || 0 == ~v~0 - ~y~0 - 1;main_#t~bitwise4#1 := 0; 86#L18-5 assume !(0 != main_#t~bitwise4#1);havoc main_#t~bitwise4#1; 87#L18-8 ~v~0 := ~v~0 / 2; 92#L22-2 [2024-10-13 16:55:05,347 INFO L747 eck$LassoCheckResult]: Loop: 92#L22-2 assume !!(~v~0 > 0);~r~0 := 2 * ~r~0;~z~0 := ~v~0 % 2; 88#L25 assume 0 == ~r~0 || ~r~0 == ~z~0;main_#t~bitwise5#1 := ~z~0; 84#L25-5 ~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; 92#L22-2 [2024-10-13 16:55:05,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash 28698060, now seen corresponding path program 1 times [2024-10-13 16:55:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:05,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54819193] [2024-10-13 16:55:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,387 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:55:05,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash 65645, now seen corresponding path program 1 times [2024-10-13 16:55:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:05,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790510888] [2024-10-13 16:55:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,407 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:05,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:55:05,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:05,418 INFO L85 PathProgramCache]: Analyzing trace with hash 245449410, now seen corresponding path program 1 times [2024-10-13 16:55:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844314194] [2024-10-13 16:55:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:55:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:55:05,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:55:05,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844314194] [2024-10-13 16:55:05,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844314194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:55:05,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:55:05,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:55:05,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662064214] [2024-10-13 16:55:05,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:55:05,641 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:55:05,642 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:55:05,642 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:55:05,642 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:55:05,642 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-13 16:55:05,642 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:05,642 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:55:05,643 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:55:05,643 INFO L132 ssoRankerPreferences]: Filename of dumped script: reverse-bits1.i_Iteration3_Loop [2024-10-13 16:55:05,643 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:55:05,643 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:55:05,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:55:05,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:55:05,692 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:55:05,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:55:05,836 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:55:05,837 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-13 16:55:05,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:05,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:55:05,841 INFO L229 MonitoredProcess]: Starting monitored process 2 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) [2024-10-13 16:55:05,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-13 16:55:05,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:55:05,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:55:05,864 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-13 16:55:05,864 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: [] [2024-10-13 16:55:05,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-10-13 16:55:05,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:05,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:55:05,885 INFO L229 MonitoredProcess]: Starting monitored process 3 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) [2024-10-13 16:55:05,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-13 16:55:05,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-13 16:55:05,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:55:05,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:55:05,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:55:05,936 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2024-10-13 16:55:05,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-13 16:55:05,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-13 16:55:05,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-13 16:55:05,992 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-13 16:55:05,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:55:05,997 INFO L204 LassoAnalysis]: Preferences: [2024-10-13 16:55:05,997 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-13 16:55:05,997 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-13 16:55:05,997 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-13 16:55:05,997 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-13 16:55:05,997 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:05,998 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-13 16:55:05,998 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-13 16:55:05,998 INFO L132 ssoRankerPreferences]: Filename of dumped script: reverse-bits1.i_Iteration3_Loop [2024-10-13 16:55:05,998 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-13 16:55:05,998 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-13 16:55:06,000 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:55:06,005 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:55:06,023 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:55:06,028 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-13 16:55:06,159 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-13 16:55:06,164 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-13 16:55:06,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:06,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:55:06,180 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2024-10-13 16:55:06,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-13 16:55:06,184 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 [2024-10-13 16:55:06,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:55:06,197 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-13 16:55:06,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:55:06,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:55:06,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:55:06,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-13 16:55:06,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-13 16:55:06,206 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-13 16:55:06,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-13 16:55:06,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:06,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:55:06,223 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2024-10-13 16:55:06,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-13 16:55:06,227 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 [2024-10-13 16:55:06,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-13 16:55:06,240 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-13 16:55:06,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-13 16:55:06,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-13 16:55:06,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-13 16:55:06,243 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-13 16:55:06,243 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-13 16:55:06,250 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-13 16:55:06,259 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2024-10-13 16:55:06,259 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-10-13 16:55:06,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:06,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:55:06,325 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2024-10-13 16:55:06,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-13 16:55:06,327 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-13 16:55:06,327 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-13 16:55:06,327 INFO L474 LassoAnalysis]: Proved termination. [2024-10-13 16:55:06,328 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(~v~0) = 1*~v~0 Supporting invariants [] [2024-10-13 16:55:06,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-13 16:55:06,345 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-13 16:55:06,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:55:06,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 16:55:06,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:55:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:55:06,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:55:06,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:55:06,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-13 16:55:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:55:06,445 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 [2024-10-13 16:55:06,447 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-10-13 16:55:06,479 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 12 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 15 states and 20 transitions. Complement of second has 4 states. [2024-10-13 16:55:06,480 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 [2024-10-13 16:55:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-10-13 16:55:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2024-10-13 16:55:06,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2024-10-13 16:55:06,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:55:06,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2024-10-13 16:55:06,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:55:06,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2024-10-13 16:55:06,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-13 16:55:06,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2024-10-13 16:55:06,486 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-13 16:55:06,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2024-10-13 16:55:06,486 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-13 16:55:06,486 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-13 16:55:06,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-13 16:55:06,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 16:55:06,487 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:55:06,487 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:55:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:55:06,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:55:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:55:06,488 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-10-13 16:55:06,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 16:55:06,489 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-10-13 16:55:06,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-10-13 16:55:06,489 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-13 16:55:06,489 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-10-13 16:55:06,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-13 16:55:06,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-13 16:55:06,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-13 16:55:06,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 16:55:06,490 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:55:06,490 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:55:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 16:55:06,491 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 16:55:06,491 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-13 16:55:06,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-13 16:55:06,491 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-13 16:55:06,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-13 16:55:06,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 04:55:06 BoogieIcfgContainer [2024-10-13 16:55:06,499 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-13 16:55:06,499 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:55:06,500 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:55:06,501 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:55:06,501 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:55:04" (3/4) ... [2024-10-13 16:55:06,503 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-13 16:55:06,504 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:55:06,505 INFO L158 Benchmark]: Toolchain (without parser) took 2468.55ms. Allocated memory was 176.2MB in the beginning and 213.9MB in the end (delta: 37.7MB). Free memory was 142.1MB in the beginning and 175.5MB in the end (delta: -33.4MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2024-10-13 16:55:06,505 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 176.2MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:55:06,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.06ms. Allocated memory is still 176.2MB. Free memory was 141.9MB in the beginning and 137.4MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-13 16:55:06,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.52ms. Allocated memory is still 176.2MB. Free memory was 137.4MB in the beginning and 136.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:55:06,508 INFO L158 Benchmark]: Boogie Preprocessor took 24.39ms. Allocated memory is still 176.2MB. Free memory was 136.2MB in the beginning and 134.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:55:06,508 INFO L158 Benchmark]: RCFGBuilder took 415.37ms. Allocated memory is still 176.2MB. Free memory was 134.5MB in the beginning and 144.0MB in the end (delta: -9.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-13 16:55:06,508 INFO L158 Benchmark]: BuchiAutomizer took 1740.31ms. Allocated memory was 176.2MB in the beginning and 213.9MB in the end (delta: 37.7MB). Free memory was 144.0MB in the beginning and 176.5MB in the end (delta: -32.5MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2024-10-13 16:55:06,509 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 213.9MB. Free memory was 176.5MB in the beginning and 175.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:55:06,511 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 176.2MB. Free memory is still 143.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.06ms. Allocated memory is still 176.2MB. Free memory was 141.9MB in the beginning and 137.4MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.52ms. Allocated memory is still 176.2MB. Free memory was 137.4MB in the beginning and 136.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.39ms. Allocated memory is still 176.2MB. Free memory was 136.2MB in the beginning and 134.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 415.37ms. Allocated memory is still 176.2MB. Free memory was 134.5MB in the beginning and 144.0MB in the end (delta: -9.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 1740.31ms. Allocated memory was 176.2MB in the beginning and 213.9MB in the end (delta: 37.7MB). Free memory was 144.0MB in the beginning and 176.5MB in the end (delta: -32.5MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 213.9MB. Free memory was 176.5MB in the beginning and 175.5MB in the end (delta: 1.0MB). 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 1.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 47 mSDtfsCounter, 16 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: unsat Degree: 0 Time: 41ms VariablesStem: 0 VariablesLoop: 0 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! [2024-10-13 16:55:06,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE