./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/Bangalore_v2.c --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-crafted/Bangalore_v2.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 d97ba8b69128e43b30f4e3953a96913f3683509f4de403028a4cfb023afba567 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:55:07,320 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:55:07,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-13 16:55:07,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:55:07,422 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:55:07,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:55:07,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:55:07,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:55:07,455 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:55:07,456 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:55:07,457 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:55:07,457 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:55:07,458 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:55:07,459 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-13 16:55:07,462 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-13 16:55:07,462 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-13 16:55:07,462 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-13 16:55:07,463 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-13 16:55:07,463 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-13 16:55:07,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:55:07,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-13 16:55:07,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:55:07,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:55:07,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-13 16:55:07,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-13 16:55:07,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-13 16:55:07,466 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:55:07,466 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:55:07,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:55:07,466 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-13 16:55:07,467 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:55:07,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:55:07,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:55:07,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:55:07,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:55:07,469 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-13 16:55:07,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d97ba8b69128e43b30f4e3953a96913f3683509f4de403028a4cfb023afba567 [2024-10-13 16:55:07,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:55:07,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:55:07,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:55:07,770 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:55:07,771 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:55:07,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2024-10-13 16:55:09,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:55:09,397 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:55:09,397 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2024-10-13 16:55:09,404 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d781879b2/1ba63e9ded1d494196a48c9dbc028fc9/FLAGbfb9d9786 [2024-10-13 16:55:09,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d781879b2/1ba63e9ded1d494196a48c9dbc028fc9 [2024-10-13 16:55:09,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:55:09,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:55:09,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:55:09,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:55:09,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:55:09,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43aa4cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09, skipping insertion in model container [2024-10-13 16:55:09,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,442 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:55:09,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:55:09,602 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:55:09,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:55:09,630 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:55:09,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09 WrapperNode [2024-10-13 16:55:09,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:55:09,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:55:09,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:55:09,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:55:09,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,651 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-10-13 16:55:09,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:55:09,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:55:09,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:55:09,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:55:09,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,662 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,667 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-13 16:55:09,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,678 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,679 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:55:09,680 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:55:09,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:55:09,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:55:09,681 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (1/1) ... [2024-10-13 16:55:09,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 16:55:09,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:55:09,714 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 16:55:09,716 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 16:55:09,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:55:09,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:55:09,839 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:55:09,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:55:09,897 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-13 16:55:09,897 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:55:09,913 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:55:09,917 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 16:55:09,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:55:09 BoogieIcfgContainer [2024-10-13 16:55:09,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:55:09,919 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-13 16:55:09,919 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-13 16:55:09,927 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-13 16:55:09,928 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:55:09,928 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 04:55:09" (1/3) ... [2024-10-13 16:55:09,929 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@683a0fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 04:55:09, skipping insertion in model container [2024-10-13 16:55:09,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:55:09,931 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:55:09" (2/3) ... [2024-10-13 16:55:09,932 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@683a0fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 04:55:09, skipping insertion in model container [2024-10-13 16:55:09,932 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 16:55:09,932 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:55:09" (3/3) ... [2024-10-13 16:55:09,933 INFO L332 chiAutomizerObserver]: Analyzing ICFG Bangalore_v2.c [2024-10-13 16:55:09,993 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-13 16:55:09,993 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-13 16:55:09,993 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-13 16:55:09,993 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-13 16:55:09,994 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-13 16:55:09,994 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-13 16:55:09,994 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-13 16:55:09,995 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-13 16:55:09,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 16:55:10,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-13 16:55:10,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:55:10,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:55:10,022 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-13 16:55:10,023 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-13 16:55:10,023 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-13 16:55:10,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 16:55:10,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-10-13 16:55:10,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 16:55:10,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 16:55:10,026 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-13 16:55:10,026 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-10-13 16:55:10,035 INFO L745 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2#L16true assume main_~y~0#1 >= 0; 4#L17-2true [2024-10-13 16:55:10,035 INFO L747 eck$LassoCheckResult]: Loop: 4#L17-2true assume !!(main_~x~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - main_~y~0#1; 4#L17-2true [2024-10-13 16:55:10,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-10-13 16:55:10,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:10,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404243645] [2024-10-13 16:55:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:10,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:10,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:10,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:55:10,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash 45, now seen corresponding path program 1 times [2024-10-13 16:55:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:10,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173907302] [2024-10-13 16:55:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:10,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:10,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:55:10,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:55:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash 925612, now seen corresponding path program 1 times [2024-10-13 16:55:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:55:10,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908766617] [2024-10-13 16:55:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:55:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:55:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:10,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:10,239 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:55:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:10,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:55:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:55:10,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 04:55:10 BoogieIcfgContainer [2024-10-13 16:55:10,378 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-13 16:55:10,378 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 16:55:10,378 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 16:55:10,379 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 16:55:10,379 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:55:09" (3/4) ... [2024-10-13 16:55:10,381 INFO L136 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-13 16:55:10,414 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 16:55:10,414 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 16:55:10,417 INFO L158 Benchmark]: Toolchain (without parser) took 994.01ms. Allocated memory is still 153.1MB. Free memory was 107.0MB in the beginning and 116.7MB in the end (delta: -9.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:55:10,417 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 114.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:55:10,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.32ms. Allocated memory is still 153.1MB. Free memory was 106.6MB in the beginning and 95.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 16:55:10,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.99ms. Allocated memory is still 153.1MB. Free memory was 95.4MB in the beginning and 94.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:55:10,420 INFO L158 Benchmark]: Boogie Preprocessor took 27.04ms. Allocated memory is still 153.1MB. Free memory was 94.1MB in the beginning and 92.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:55:10,421 INFO L158 Benchmark]: RCFGBuilder took 238.25ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 83.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-13 16:55:10,422 INFO L158 Benchmark]: BuchiAutomizer took 459.10ms. Allocated memory is still 153.1MB. Free memory was 83.9MB in the beginning and 119.0MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 16:55:10,422 INFO L158 Benchmark]: Witness Printer took 36.20ms. Allocated memory is still 153.1MB. Free memory was 119.0MB in the beginning and 116.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 16:55:10,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 114.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.32ms. Allocated memory is still 153.1MB. Free memory was 106.6MB in the beginning and 95.4MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.99ms. Allocated memory is still 153.1MB. Free memory was 95.4MB in the beginning and 94.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.04ms. Allocated memory is still 153.1MB. Free memory was 94.1MB in the beginning and 92.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 238.25ms. Allocated memory is still 153.1MB. Free memory was 92.3MB in the beginning and 83.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 459.10ms. Allocated memory is still 153.1MB. Free memory was 83.9MB in the beginning and 119.0MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 36.20ms. Allocated memory is still 153.1MB. Free memory was 119.0MB in the beginning and 116.7MB in the end (delta: 2.3MB). 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: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE y >= 0 VAL [y=0] Loop: [L17] COND TRUE x >= 0 [L18] x = x - y End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE y >= 0 VAL [y=0] Loop: [L17] COND TRUE x >= 0 [L18] x = x - y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-13 16:55:10,454 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)