./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Division-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 61a67961 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-crafted/Division-2.c -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 bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:08:22,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:08:22,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-15 00:08:22,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:08:22,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:08:22,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:08:22,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:08:22,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:08:22,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:08:22,981 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:08:22,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:08:22,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:08:22,982 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:08:22,983 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-15 00:08:22,983 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-15 00:08:22,983 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-15 00:08:22,986 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-15 00:08:22,986 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-15 00:08:22,986 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-15 00:08:22,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:08:22,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-15 00:08:22,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:08:22,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:08:22,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-15 00:08:22,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-15 00:08:22,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-15 00:08:22,992 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:08:22,993 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:08:22,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:08:22,993 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-15 00:08:22,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:08:22,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:08:22,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:08:22,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:08:22,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:08:22,996 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-15 00:08:22,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 [2024-10-15 00:08:23,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:08:23,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:08:23,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:08:23,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:08:23,296 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:08:23,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Division-2.c [2024-10-15 00:08:24,881 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:08:25,106 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:08:25,107 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Division-2.c [2024-10-15 00:08:25,114 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff2bbc5d/5e54c74ae9344035ac20e73b6c8b5acb/FLAG0377d4c34 [2024-10-15 00:08:25,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff2bbc5d/5e54c74ae9344035ac20e73b6c8b5acb [2024-10-15 00:08:25,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:08:25,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:08:25,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:08:25,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:08:25,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:08:25,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be896e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25, skipping insertion in model container [2024-10-15 00:08:25,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:08:25,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:08:25,689 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:08:25,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:08:25,716 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:08:25,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25 WrapperNode [2024-10-15 00:08:25,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:08:25,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:08:25,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:08:25,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:08:25,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,742 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2024-10-15 00:08:25,742 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:08:25,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:08:25,743 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:08:25,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:08:25,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,753 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,759 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-15 00:08:25,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:08:25,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:08:25,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:08:25,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:08:25,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (1/1) ... [2024-10-15 00:08:25,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:08:25,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:08:25,803 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) [2024-10-15 00:08:25,805 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 [2024-10-15 00:08:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:08:25,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:08:25,894 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:08:25,896 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:08:25,964 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-10-15 00:08:25,965 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:08:25,975 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:08:25,975 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 00:08:25,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:25 BoogieIcfgContainer [2024-10-15 00:08:25,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:08:25,977 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-15 00:08:25,977 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-15 00:08:25,981 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-15 00:08:25,982 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:08:25,982 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 12:08:25" (1/3) ... [2024-10-15 00:08:25,984 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28a3f10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:08:25, skipping insertion in model container [2024-10-15 00:08:25,984 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:08:25,984 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:25" (2/3) ... [2024-10-15 00:08:25,985 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28a3f10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:08:25, skipping insertion in model container [2024-10-15 00:08:25,985 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:08:25,985 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:25" (3/3) ... [2024-10-15 00:08:25,986 INFO L332 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2024-10-15 00:08:26,048 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-15 00:08:26,048 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-15 00:08:26,048 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-15 00:08:26,048 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-15 00:08:26,048 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-15 00:08:26,048 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-15 00:08:26,049 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-15 00:08:26,049 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-15 00:08:26,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2024-10-15 00:08:26,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-15 00:08:26,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:08:26,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:08:26,074 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-15 00:08:26,074 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-15 00:08:26,074 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-15 00:08:26,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2024-10-15 00:08:26,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-15 00:08:26,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:08:26,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:08:26,076 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-15 00:08:26,076 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-15 00:08:26,082 INFO L745 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L14-2true [2024-10-15 00:08:26,082 INFO L747 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~y~0#1 >= 0 && main_~y~0#1 <= 10);main_~y~0#1 := (if 1 + 2 * main_~y~0#1 < 0 && 0 != (1 + 2 * main_~y~0#1) % 2 then 1 + (1 + 2 * main_~y~0#1) / 2 else (1 + 2 * main_~y~0#1) / 2); 6#L14-2true [2024-10-15 00:08:26,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:08:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-15 00:08:26,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:08:26,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113684576] [2024-10-15 00:08:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:08:26,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:08:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:26,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:08:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:26,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:08:26,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:08:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2024-10-15 00:08:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:08:26,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936067133] [2024-10-15 00:08:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:08:26,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:08:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:26,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:08:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:26,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:08:26,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:08:26,238 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-10-15 00:08:26,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:08:26,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009273059] [2024-10-15 00:08:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:08:26,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:08:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:26,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:08:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:26,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:08:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:26,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:08:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:08:26,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 12:08:26 BoogieIcfgContainer [2024-10-15 00:08:26,391 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-15 00:08:26,392 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:08:26,392 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:08:26,392 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:08:26,393 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:25" (3/4) ... [2024-10-15 00:08:26,395 INFO L136 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-15 00:08:26,430 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-15 00:08:26,431 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:08:26,433 INFO L158 Benchmark]: Toolchain (without parser) took 926.61ms. Allocated memory is still 186.6MB. Free memory was 156.0MB in the beginning and 114.0MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-10-15 00:08:26,434 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 121.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:08:26,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.60ms. Allocated memory is still 186.6MB. Free memory was 156.0MB in the beginning and 146.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-15 00:08:26,436 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.78ms. Allocated memory is still 186.6MB. Free memory was 146.5MB in the beginning and 144.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:08:26,436 INFO L158 Benchmark]: Boogie Preprocessor took 27.92ms. Allocated memory is still 186.6MB. Free memory was 144.4MB in the beginning and 143.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:08:26,438 INFO L158 Benchmark]: RCFGBuilder took 204.15ms. Allocated memory is still 186.6MB. Free memory was 143.3MB in the beginning and 134.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-15 00:08:26,439 INFO L158 Benchmark]: BuchiAutomizer took 414.65ms. Allocated memory is still 186.6MB. Free memory was 134.0MB in the beginning and 116.1MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-15 00:08:26,439 INFO L158 Benchmark]: Witness Printer took 38.61ms. Allocated memory is still 186.6MB. Free memory was 116.1MB in the beginning and 114.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:08:26,445 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 121.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.60ms. Allocated memory is still 186.6MB. Free memory was 156.0MB in the beginning and 146.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.78ms. Allocated memory is still 186.6MB. Free memory was 146.5MB in the beginning and 144.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.92ms. Allocated memory is still 186.6MB. Free memory was 144.4MB in the beginning and 143.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 204.15ms. Allocated memory is still 186.6MB. Free memory was 143.3MB in the beginning and 134.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 414.65ms. Allocated memory is still 186.6MB. Free memory was 134.0MB in the beginning and 116.1MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 38.61ms. Allocated memory is still 186.6MB. Free memory was 116.1MB in the beginning and 114.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-15 00:08:26,486 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)