./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-bwb/and-03-false.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/termination-bwb/and-03-false.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 cfd67d5631b4948a1522f37c4b686fa068a561ee1d767737058a32ed6cf067a0 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:51:17,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:51:17,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-12 20:51:17,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:51:17,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:51:17,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:51:17,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:51:17,741 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:51:17,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:51:17,742 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:51:17,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:51:17,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:51:17,744 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:51:17,744 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-12 20:51:17,744 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-12 20:51:17,746 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-12 20:51:17,747 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-12 20:51:17,747 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-12 20:51:17,747 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-12 20:51:17,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:51:17,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-12 20:51:17,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:51:17,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:51:17,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-12 20:51:17,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-12 20:51:17,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-12 20:51:17,749 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:51:17,749 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:51:17,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:51:17,749 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-12 20:51:17,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:51:17,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:51:17,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:51:17,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:51:17,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:51:17,759 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-12 20:51:17,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfd67d5631b4948a1522f37c4b686fa068a561ee1d767737058a32ed6cf067a0 [2024-11-12 20:51:17,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:51:18,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:51:18,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:51:18,026 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:51:18,026 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:51:18,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-bwb/and-03-false.c [2024-11-12 20:51:19,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:51:19,467 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:51:19,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-bwb/and-03-false.c [2024-11-12 20:51:19,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd22b1985/41ac05fcb8e94cfc9a39429913b98ae9/FLAGcc6c8e76f [2024-11-12 20:51:19,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd22b1985/41ac05fcb8e94cfc9a39429913b98ae9 [2024-11-12 20:51:19,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:51:19,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:51:19,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:51:19,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:51:19,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:51:19,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:51:19" (1/1) ... [2024-11-12 20:51:19,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264a094a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:19, skipping insertion in model container [2024-11-12 20:51:19,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:51:19" (1/1) ... [2024-11-12 20:51:19,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:51:20,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:51:20,074 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:51:20,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:51:20,098 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:51:20,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20 WrapperNode [2024-11-12 20:51:20,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:51:20,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:51:20,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:51:20,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:51:20,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,124 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2024-11-12 20:51:20,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:51:20,126 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:51:20,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:51:20,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:51:20,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,136 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,141 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-12 20:51:20,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:51:20,158 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:51:20,158 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:51:20,158 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:51:20,159 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (1/1) ... [2024-11-12 20:51:20,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:20,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:20,194 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) [2024-11-12 20:51:20,196 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 [2024-11-12 20:51:20,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:51:20,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:51:20,272 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:51:20,274 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:51:20,343 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-12 20:51:20,343 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:51:20,351 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:51:20,352 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 20:51:20,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:51:20 BoogieIcfgContainer [2024-11-12 20:51:20,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:51:20,353 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-12 20:51:20,353 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-12 20:51:20,356 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-12 20:51:20,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:51:20,357 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 08:51:19" (1/3) ... [2024-11-12 20:51:20,358 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b4fafe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:51:20, skipping insertion in model container [2024-11-12 20:51:20,358 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:51:20,358 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:20" (2/3) ... [2024-11-12 20:51:20,358 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b4fafe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:51:20, skipping insertion in model container [2024-11-12 20:51:20,358 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:51:20,358 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:51:20" (3/3) ... [2024-11-12 20:51:20,359 INFO L332 chiAutomizerObserver]: Analyzing ICFG and-03-false.c [2024-11-12 20:51:20,400 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2024-11-12 20:51:20,400 INFO L302 stractBuchiCegarLoop]: Hoare is None [2024-11-12 20:51:20,400 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-12 20:51:20,400 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-12 20:51:20,400 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-12 20:51:20,400 INFO L306 stractBuchiCegarLoop]: Difference is false [2024-11-12 20:51:20,400 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-12 20:51:20,400 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-12 20:51:20,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2024-11-12 20:51:20,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:20,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:51:20,415 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:51:20,419 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:51:20,420 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-12 20:51:20,420 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-12 20:51:20,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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) [2024-11-12 20:51:20,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:20,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:51:20,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:51:20,421 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:51:20,421 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-12 20:51:20,427 INFO L747 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_#t~bitwise1#1, main_#t~post2#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" [2024-11-12 20:51:20,427 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(0 == main_~x~0#1);" "assume !(main_~x~0#1 >= 0);main_#t~post2#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1;" [2024-11-12 20:51:20,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-12 20:51:20,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:20,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346519958] [2024-11-12 20:51:20,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:20,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,497 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:20,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:20,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1331, now seen corresponding path program 1 times [2024-11-12 20:51:20,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:20,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084892296] [2024-11-12 20:51:20,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:20,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:20,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:51:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084892296] [2024-11-12 20:51:20,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084892296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:51:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062779710] [2024-11-12 20:51:20,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:20,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:51:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:20,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:51:20,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:51:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:20,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:51:20,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:51:20,636 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:51:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062779710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:51:20,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:51:20,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1, 1, 1] total 1 [2024-11-12 20:51:20,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665096270] [2024-11-12 20:51:20,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:51:20,647 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:51:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:51:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:51:20,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:51:20,677 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:51:20,701 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2024-11-12 20:51:20,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2024-11-12 20:51:20,703 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:20,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2024-11-12 20:51:20,707 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-12 20:51:20,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-12 20:51:20,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-11-12 20:51:20,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:51:20,708 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-12 20:51:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-11-12 20:51:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-12 20:51:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-11-12 20:51:20,728 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-12 20:51:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:51:20,733 INFO L426 stractBuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-12 20:51:20,733 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-12 20:51:20,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2024-11-12 20:51:20,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:20,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:51:20,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:51:20,734 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:51:20,734 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-12 20:51:20,734 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~bitwise1#1, main_#t~post2#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" [2024-11-12 20:51:20,734 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(0 == main_~x~0#1);" "assume main_~x~0#1 >= 0;" "assume 0 == main_~x~0#1 || 0 == main_~x~0#1 - 1;main_#t~bitwise1#1 := 0;" "main_~x~0#1 := main_#t~bitwise1#1;havoc main_#t~bitwise1#1;" [2024-11-12 20:51:20,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:20,734 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-12 20:51:20,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:20,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135392045] [2024-11-12 20:51:20,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:20,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,738 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,740 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:20,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1265230, now seen corresponding path program 1 times [2024-11-12 20:51:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:20,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289820571] [2024-11-12 20:51:20,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,745 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:20,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash 889692432, now seen corresponding path program 1 times [2024-11-12 20:51:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505575237] [2024-11-12 20:51:20,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:20,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,755 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,832 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:20,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 08:51:20 BoogieIcfgContainer [2024-11-12 20:51:20,849 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-12 20:51:20,850 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:51:20,850 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:51:20,850 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:51:20,851 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:51:20" (3/4) ... [2024-11-12 20:51:20,852 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-12 20:51:20,876 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 20:51:20,877 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:51:20,877 INFO L158 Benchmark]: Toolchain (without parser) took 969.05ms. Allocated memory is still 155.2MB. Free memory was 99.5MB in the beginning and 43.5MB in the end (delta: 55.9MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-11-12 20:51:20,877 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 155.2MB. Free memory was 122.0MB in the beginning and 121.7MB in the end (delta: 285.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:51:20,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.64ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 87.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-12 20:51:20,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.39ms. Allocated memory is still 155.2MB. Free memory was 87.5MB in the beginning and 86.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:51:20,878 INFO L158 Benchmark]: Boogie Preprocessor took 30.96ms. Allocated memory is still 155.2MB. Free memory was 86.2MB in the beginning and 84.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:51:20,879 INFO L158 Benchmark]: RCFGBuilder took 194.65ms. Allocated memory is still 155.2MB. Free memory was 84.8MB in the beginning and 75.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-12 20:51:20,879 INFO L158 Benchmark]: BuchiAutomizer took 496.40ms. Allocated memory is still 155.2MB. Free memory was 75.0MB in the beginning and 45.0MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-12 20:51:20,879 INFO L158 Benchmark]: Witness Printer took 26.64ms. Allocated memory is still 155.2MB. Free memory was 45.0MB in the beginning and 43.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:51:20,881 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 155.2MB. Free memory was 122.0MB in the beginning and 121.7MB in the end (delta: 285.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.64ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 87.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.39ms. Allocated memory is still 155.2MB. Free memory was 87.5MB in the beginning and 86.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.96ms. Allocated memory is still 155.2MB. Free memory was 86.2MB in the beginning and 84.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 194.65ms. Allocated memory is still 155.2MB. Free memory was 84.8MB in the beginning and 75.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 496.40ms. Allocated memory is still 155.2MB. Free memory was 75.0MB in the beginning and 45.0MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 26.64ms. Allocated memory is still 155.2MB. Free memory was 45.0MB in the beginning and 43.5MB in the end (delta: 1.5MB). 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 Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 2 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 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 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: [L12] int x; [L13] x = __VERIFIER_nondet_int() Loop: [L14] COND TRUE x==0 [L16] COND TRUE x >= 0 [L17] EXPR x&(x-1) [L17] x = x&(x-1) 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: [L12] int x; [L13] x = __VERIFIER_nondet_int() Loop: [L14] COND TRUE x==0 [L16] COND TRUE x >= 0 [L17] EXPR x&(x-1) [L17] x = x&(x-1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-12 20:51:20,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 20:51:21,103 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)