./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Division-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/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 0.3.0-?-8fc3dc6-m [2025-03-17 19:50:11,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:50:11,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-03-17 19:50:11,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:50:11,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:50:11,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-17 19:50:11,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:50:11,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:50:11,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:50:11,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:50:11,254 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:50:11,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:50:11,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:50:11,255 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:50:11,255 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-17 19:50:11,255 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-17 19:50:11,255 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-17 19:50:11,256 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-17 19:50:11,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-17 19:50:11,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:50:11,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:50:11,257 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-17 19:50:11,257 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:50:11,257 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:50:11,257 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:50:11,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:50:11,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:50:11,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:50:11,258 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-17 19:50:11,258 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 [2025-03-17 19:50:11,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:50:11,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:50:11,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:50:11,512 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:50:11,512 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:50:11,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Division-2.c [2025-03-17 19:50:12,669 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980bee56a/e5548fe003314dfd83cf002b5febfb0d/FLAGf6634cc29 [2025-03-17 19:50:12,874 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:50:12,874 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Division-2.c [2025-03-17 19:50:12,879 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980bee56a/e5548fe003314dfd83cf002b5febfb0d/FLAGf6634cc29 [2025-03-17 19:50:13,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/980bee56a/e5548fe003314dfd83cf002b5febfb0d [2025-03-17 19:50:13,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:50:13,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:50:13,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:50:13,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:50:13,243 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:50:13,243 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,244 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2617b3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13, skipping insertion in model container [2025-03-17 19:50:13,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:50:13,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:50:13,347 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:50:13,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:50:13,364 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:50:13,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13 WrapperNode [2025-03-17 19:50:13,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:50:13,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:50:13,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:50:13,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:50:13,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,383 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2025-03-17 19:50:13,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:50:13,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:50:13,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:50:13,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:50:13,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,391 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,395 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-17 19:50:13,395 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,396 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,399 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,400 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:50:13,401 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:50:13,401 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:50:13,401 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:50:13,402 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (1/1) ... [2025-03-17 19:50:13,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:50:13,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:50:13,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:50:13,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-03-17 19:50:13,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:50:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:50:13,490 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:50:13,492 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:50:13,548 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2025-03-17 19:50:13,548 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:50:13,553 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:50:13,554 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:50:13,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:50:13 BoogieIcfgContainer [2025-03-17 19:50:13,554 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:50:13,555 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-17 19:50:13,555 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-17 19:50:13,558 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-17 19:50:13,559 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:50:13,559 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.03 07:50:13" (1/3) ... [2025-03-17 19:50:13,559 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68035c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 07:50:13, skipping insertion in model container [2025-03-17 19:50:13,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:50:13,560 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:50:13" (2/3) ... [2025-03-17 19:50:13,560 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68035c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 07:50:13, skipping insertion in model container [2025-03-17 19:50:13,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:50:13,560 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:50:13" (3/3) ... [2025-03-17 19:50:13,561 INFO L363 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2025-03-17 19:50:13,593 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-17 19:50:13,594 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-17 19:50:13,594 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-17 19:50:13,594 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-17 19:50:13,594 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-17 19:50:13,594 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-17 19:50:13,594 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-17 19:50:13,594 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-17 19:50:13,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:50:13,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-03-17 19:50:13,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:50:13,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:50:13,613 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-03-17 19:50:13,613 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-03-17 19:50:13,614 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-17 19:50:13,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:50:13,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-03-17 19:50:13,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:50:13,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:50:13,615 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-03-17 19:50:13,615 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-03-17 19:50:13,621 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" [2025-03-17 19:50:13,622 INFO L754 eck$LassoCheckResult]: Loop: "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);" [2025-03-17 19:50:13,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:50:13,626 INFO L85 PathProgramCache]: Analyzing trace with hash 33, now seen corresponding path program 1 times [2025-03-17 19:50:13,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:50:13,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474800775] [2025-03-17 19:50:13,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:50:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:50:13,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:50:13,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:50:13,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:50:13,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:50:13,676 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:50:13,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:50:13,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:50:13,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:50:13,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:50:13,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:50:13,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:50:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2025-03-17 19:50:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:50:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576276570] [2025-03-17 19:50:13,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:50:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:50:13,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:50:13,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:50:13,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:50:13,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:50:13,699 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:50:13,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:50:13,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:50:13,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:50:13,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:50:13,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:50:13,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:50:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1024, now seen corresponding path program 1 times [2025-03-17 19:50:13,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:50:13,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748160225] [2025-03-17 19:50:13,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:50:13,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:50:13,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:50:13,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:50:13,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:50:13,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:50:13,711 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:50:13,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:50:13,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:50:13,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:50:13,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:50:13,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:50:13,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:50:13,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:50:13,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:50:13,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:50:13,796 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:50:13,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:50:13,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:50:13,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:50:13,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:50:13,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.03 07:50:13 BoogieIcfgContainer [2025-03-17 19:50:13,809 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-17 19:50:13,810 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:50:13,810 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:50:13,810 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:50:13,811 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:50:13" (3/4) ... [2025-03-17 19:50:13,812 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-03-17 19:50:13,831 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:50:13,832 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:50:13,835 INFO L158 Benchmark]: Toolchain (without parser) took 594.44ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 73.6MB in the end (delta: 37.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 19:50:13,835 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:50:13,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 125.39ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 101.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:50:13,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.77ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 100.4MB in the end (delta: 887.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:50:13,836 INFO L158 Benchmark]: Boogie Preprocessor took 16.44ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.6MB in the end (delta: 893.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:50:13,836 INFO L158 Benchmark]: IcfgBuilder took 153.12ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 89.8MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:50:13,836 INFO L158 Benchmark]: BuchiAutomizer took 254.95ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 76.3MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 19:50:13,836 INFO L158 Benchmark]: Witness Printer took 21.69ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 73.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:50:13,837 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 125.39ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 101.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.77ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 100.4MB in the end (delta: 887.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.44ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 99.6MB in the end (delta: 893.8kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 153.12ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 89.8MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 254.95ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 76.3MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 21.69ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 73.6MB in the end (delta: 2.7MB). 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. 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! [2025-03-17 19:50:13,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)