./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/termination.prp --file ../../../trunk/examples/svcomp/termination-bwb/not-02-false.c --full-output --cacsl2boogietranslator.use.bitabs.translation true --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 514d202d 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 ../../../trunk/examples/svcomp/termination-bwb/not-02-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 1cb1212705dcb2359e149f714cdee98eb86abe4233b8489d951797aa1809a1f3 --cacsl2boogietranslator.use.bitabs.translation true --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-514d202-m [2024-02-09 14:17:43,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-09 14:17:43,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-02-09 14:17:43,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-09 14:17:43,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-09 14:17:43,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-09 14:17:43,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-09 14:17:43,840 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-09 14:17:43,841 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-09 14:17:43,844 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-09 14:17:43,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-09 14:17:43,845 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-09 14:17:43,845 INFO L153 SettingsManager]: * Use SBE=true [2024-02-09 14:17:43,847 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-09 14:17:43,847 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-09 14:17:43,847 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-09 14:17:43,847 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-09 14:17:43,848 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-09 14:17:43,848 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-09 14:17:43,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-09 14:17:43,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-09 14:17:43,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-09 14:17:43,849 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-09 14:17:43,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-09 14:17:43,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-09 14:17:43,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-09 14:17:43,850 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-09 14:17:43,851 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-09 14:17:43,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-09 14:17:43,851 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-09 14:17:43,852 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-09 14:17:43,852 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-09 14:17:43,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-09 14:17:43,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-09 14:17:43,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-09 14:17:43,853 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-09 14:17:43,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cb1212705dcb2359e149f714cdee98eb86abe4233b8489d951797aa1809a1f3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2024-02-09 14:17:44,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-09 14:17:44,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-09 14:17:44,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-09 14:17:44,090 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-09 14:17:44,090 INFO L274 PluginConnector]: CDTParser initialized [2024-02-09 14:17:44,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-bwb/not-02-false.c [2024-02-09 14:17:45,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-09 14:17:45,389 INFO L384 CDTParser]: Found 1 translation units. [2024-02-09 14:17:45,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-bwb/not-02-false.c [2024-02-09 14:17:45,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da57e8869/f4286c51c4e04257a475814e363faadd/FLAG003da0876 [2024-02-09 14:17:45,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da57e8869/f4286c51c4e04257a475814e363faadd [2024-02-09 14:17:45,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-09 14:17:45,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-09 14:17:45,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-09 14:17:45,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-09 14:17:45,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-09 14:17:45,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a488bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45, skipping insertion in model container [2024-02-09 14:17:45,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-09 14:17:45,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 14:17:45,542 INFO L202 MainTranslator]: Completed pre-run [2024-02-09 14:17:45,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 14:17:45,562 INFO L206 MainTranslator]: Completed translation [2024-02-09 14:17:45,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45 WrapperNode [2024-02-09 14:17:45,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-09 14:17:45,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-09 14:17:45,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-09 14:17:45,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-09 14:17:45,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,588 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-02-09 14:17:45,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-09 14:17:45,589 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-09 14:17:45,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-09 14:17:45,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-09 14:17:45,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,601 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,605 INFO L175 MemorySlicer]: No memory access in input program. [2024-02-09 14:17:45,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,611 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-09 14:17:45,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-09 14:17:45,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-09 14:17:45,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-09 14:17:45,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (1/1) ... [2024-02-09 14:17:45,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:45,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:45,654 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) [2024-02-09 14:17:45,705 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 [2024-02-09 14:17:45,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-09 14:17:45,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-09 14:17:45,797 INFO L241 CfgBuilder]: Building ICFG [2024-02-09 14:17:45,799 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-09 14:17:45,865 INFO L282 CfgBuilder]: Performing block encoding [2024-02-09 14:17:45,871 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-09 14:17:45,872 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-09 14:17:45,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:17:45 BoogieIcfgContainer [2024-02-09 14:17:45,872 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-09 14:17:45,873 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-09 14:17:45,873 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-09 14:17:45,876 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-09 14:17:45,876 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:17:45,876 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.02 02:17:45" (1/3) ... [2024-02-09 14:17:45,877 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42c5e89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 02:17:45, skipping insertion in model container [2024-02-09 14:17:45,877 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:17:45,877 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:45" (2/3) ... [2024-02-09 14:17:45,878 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42c5e89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 02:17:45, skipping insertion in model container [2024-02-09 14:17:45,878 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:17:45,878 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:17:45" (3/3) ... [2024-02-09 14:17:45,879 INFO L332 chiAutomizerObserver]: Analyzing ICFG not-02-false.c [2024-02-09 14:17:45,916 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-09 14:17:45,917 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-09 14:17:45,917 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-09 14:17:45,917 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-09 14:17:45,917 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-09 14:17:45,917 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-09 14:17:45,918 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-09 14:17:45,918 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-02-09 14:17:45,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-02-09 14:17:45,944 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-02-09 14:17:45,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:17:45,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:17:45,949 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-02-09 14:17:45,949 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-02-09 14:17:45,949 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-02-09 14:17:45,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-02-09 14:17:45,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-02-09 14:17:45,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:17:45,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:17:45,966 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-02-09 14:17:45,966 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-02-09 14:17:45,981 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~a~0#1 := 1; 3#L17-2true [2024-02-09 14:17:45,987 INFO L750 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~x~0#1 < 0);main_~y~0#1 := -1 - main_~a~0#1;main_~x~0#1 := main_~y~0#1; 3#L17-2true [2024-02-09 14:17:46,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:46,001 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-02-09 14:17:46,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:46,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84923344] [2024-02-09 14:17:46,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:46,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:46,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:46,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:46,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:46,187 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2024-02-09 14:17:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65412239] [2024-02-09 14:17:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:46,210 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:46,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:46,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-02-09 14:17:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:46,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269838767] [2024-02-09 14:17:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:46,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:46,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:46,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:46,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.02 02:17:46 BoogieIcfgContainer [2024-02-09 14:17:46,389 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-02-09 14:17:46,390 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-02-09 14:17:46,390 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-02-09 14:17:46,390 INFO L274 PluginConnector]: Witness Printer initialized [2024-02-09 14:17:46,390 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:17:45" (3/4) ... [2024-02-09 14:17:46,392 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2024-02-09 14:17:46,448 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-02-09 14:17:46,448 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-02-09 14:17:46,450 INFO L158 Benchmark]: Toolchain (without parser) took 1032.82ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 83.4MB in the beginning and 154.5MB in the end (delta: -71.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-09 14:17:46,451 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 106.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-09 14:17:46,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.68ms. Allocated memory is still 155.2MB. Free memory was 83.2MB in the beginning and 73.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-02-09 14:17:46,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.57ms. Allocated memory is still 155.2MB. Free memory was 73.6MB in the beginning and 72.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-09 14:17:46,452 INFO L158 Benchmark]: Boogie Preprocessor took 22.41ms. Allocated memory is still 155.2MB. Free memory was 72.3MB in the beginning and 70.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-09 14:17:46,452 INFO L158 Benchmark]: RCFGBuilder took 259.98ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 70.9MB in the beginning and 174.4MB in the end (delta: -103.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2024-02-09 14:17:46,453 INFO L158 Benchmark]: BuchiAutomizer took 516.52ms. Allocated memory is still 207.6MB. Free memory was 174.4MB in the beginning and 156.6MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-02-09 14:17:46,453 INFO L158 Benchmark]: Witness Printer took 58.23ms. Allocated memory is still 207.6MB. Free memory was 156.6MB in the beginning and 154.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-09 14:17:46,455 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 106.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.68ms. Allocated memory is still 155.2MB. Free memory was 83.2MB in the beginning and 73.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.57ms. Allocated memory is still 155.2MB. Free memory was 73.6MB in the beginning and 72.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.41ms. Allocated memory is still 155.2MB. Free memory was 72.3MB in the beginning and 70.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 259.98ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 70.9MB in the beginning and 174.4MB in the end (delta: -103.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 516.52ms. Allocated memory is still 207.6MB. Free memory was 174.4MB in the beginning and 156.6MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 58.23ms. Allocated memory is still 207.6MB. Free memory was 156.6MB in the beginning and 154.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 1 VAL [a=1] Loop: [L17] COND TRUE x<0 [L18] y = ~a [L19] 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: [L13] int a, x, y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] a = 1 VAL [a=1] Loop: [L17] COND TRUE x<0 [L18] y = ~a [L19] x = y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-02-09 14:17:46,484 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)