./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 c7c6ca5d 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-?-c7c6ca5-m [2024-11-09 15:17:42,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:17:42,451 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-09 15:17:42,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:17:42,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:17:42,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:17:42,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:17:42,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:17:42,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:17:42,483 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:17:42,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:17:42,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:17:42,484 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:17:42,484 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-09 15:17:42,484 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-09 15:17:42,484 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-09 15:17:42,485 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-09 15:17:42,485 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-09 15:17:42,487 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-09 15:17:42,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:17:42,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-09 15:17:42,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:17:42,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:17:42,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-09 15:17:42,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-09 15:17:42,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-09 15:17:42,491 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:17:42,491 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:17:42,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:17:42,491 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-09 15:17:42,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:17:42,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:17:42,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:17:42,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:17:42,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:17:42,492 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-09 15:17:42,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfd67d5631b4948a1522f37c4b686fa068a561ee1d767737058a32ed6cf067a0 [2024-11-09 15:17:42,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:17:42,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:17:42,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:17:42,736 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:17:42,737 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:17:42,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-bwb/and-03-false.c [2024-11-09 15:17:44,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:17:44,148 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:17:44,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-bwb/and-03-false.c [2024-11-09 15:17:44,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beeb6c63d/3b7b3eac948c44c88128461ee2fcb53a/FLAGdf434fa10 [2024-11-09 15:17:44,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beeb6c63d/3b7b3eac948c44c88128461ee2fcb53a [2024-11-09 15:17:44,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:17:44,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:17:44,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:17:44,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:17:44,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:17:44,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3884f5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44, skipping insertion in model container [2024-11-09 15:17:44,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,594 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:17:44,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:17:44,749 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:17:44,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:17:44,773 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:17:44,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44 WrapperNode [2024-11-09 15:17:44,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:17:44,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:17:44,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:17:44,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:17:44,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,794 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2024-11-09 15:17:44,795 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:17:44,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:17:44,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:17:44,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:17:44,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,813 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-09 15:17:44,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:17:44,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:17:44,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:17:44,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:17:44,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (1/1) ... [2024-11-09 15:17:44,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-09 15:17:44,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:17:44,852 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) [2024-11-09 15:17:44,853 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 [2024-11-09 15:17:44,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:17:44,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:17:44,935 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:17:44,936 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:17:45,016 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-09 15:17:45,016 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:17:45,031 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:17:45,034 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 15:17:45,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:17:45 BoogieIcfgContainer [2024-11-09 15:17:45,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:17:45,035 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-09 15:17:45,035 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-09 15:17:45,039 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-09 15:17:45,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-09 15:17:45,040 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 03:17:44" (1/3) ... [2024-11-09 15:17:45,040 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2535fc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 03:17:45, skipping insertion in model container [2024-11-09 15:17:45,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-09 15:17:45,040 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:17:44" (2/3) ... [2024-11-09 15:17:45,041 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2535fc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 03:17:45, skipping insertion in model container [2024-11-09 15:17:45,041 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-09 15:17:45,041 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:17:45" (3/3) ... [2024-11-09 15:17:45,042 INFO L332 chiAutomizerObserver]: Analyzing ICFG and-03-false.c [2024-11-09 15:17:45,081 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-09 15:17:45,082 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-09 15:17:45,082 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-09 15:17:45,082 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-09 15:17:45,082 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-09 15:17:45,082 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-09 15:17:45,082 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-09 15:17:45,082 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-09 15:17:45,085 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) [2024-11-09 15:17:45,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-09 15:17:45,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-09 15:17:45,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-09 15:17:45,100 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-09 15:17:45,100 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-09 15:17:45,100 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-09 15:17:45,101 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) [2024-11-09 15:17:45,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-09 15:17:45,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-09 15:17:45,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-09 15:17:45,102 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-09 15:17:45,102 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-09 15:17:45,107 INFO L745 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~bitwise1#1, main_#t~post2#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 8#L16-2true [2024-11-09 15:17:45,107 INFO L747 eck$LassoCheckResult]: Loop: 8#L16-2true assume !!(0 == main_~x~0#1); 2#L16true 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; 8#L16-2true [2024-11-09 15:17:45,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:17:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-09 15:17:45,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:17:45,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867254516] [2024-11-09 15:17:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:17:45,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:17:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:17:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:17:45,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:17:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1331, now seen corresponding path program 1 times [2024-11-09 15:17:45,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:17:45,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239502012] [2024-11-09 15:17:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:17:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:17:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:17:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:17:45,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:17:45,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239502012] [2024-11-09 15:17:45,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239502012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:17:45,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:17:45,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:17:45,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939761133] [2024-11-09 15:17:45,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:17:45,259 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-09 15:17:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:17:45,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:17:45,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:17:45,284 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) [2024-11-09 15:17:45,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 15:17:45,303 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2024-11-09 15:17:45,304 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2024-11-09 15:17:45,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-09 15:17:45,307 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2024-11-09 15:17:45,307 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-09 15:17:45,307 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-09 15:17:45,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-11-09 15:17:45,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-09 15:17:45,308 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-09 15:17:45,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-11-09 15:17:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-09 15:17:45,324 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) [2024-11-09 15:17:45,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-11-09 15:17:45,325 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-09 15:17:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:17:45,328 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-09 15:17:45,328 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-09 15:17:45,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2024-11-09 15:17:45,329 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-09 15:17:45,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-09 15:17:45,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-09 15:17:45,329 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-09 15:17:45,330 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-09 15:17:45,330 INFO L745 eck$LassoCheckResult]: Stem: 38#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 39#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~bitwise1#1, main_#t~post2#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 40#L16-2 [2024-11-09 15:17:45,330 INFO L747 eck$LassoCheckResult]: Loop: 40#L16-2 assume !!(0 == main_~x~0#1); 33#L16 assume main_~x~0#1 >= 0; 34#L17 assume 0 == main_~x~0#1 || 0 == main_~x~0#1 - 1;main_#t~bitwise1#1 := 0; 35#L17-5 main_~x~0#1 := main_#t~bitwise1#1;havoc main_#t~bitwise1#1; 40#L16-2 [2024-11-09 15:17:45,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:17:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-09 15:17:45,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:17:45,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189310095] [2024-11-09 15:17:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:17:45,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:17:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:17:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,341 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:17:45,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:17:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1265230, now seen corresponding path program 1 times [2024-11-09 15:17:45,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:17:45,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690136276] [2024-11-09 15:17:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:17:45,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:17:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:17:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:17:45,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:17:45,351 INFO L85 PathProgramCache]: Analyzing trace with hash 889692432, now seen corresponding path program 1 times [2024-11-09 15:17:45,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:17:45,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804160092] [2024-11-09 15:17:45,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:17:45,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:17:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:17:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:17:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:17:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:17:45,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 03:17:45 BoogieIcfgContainer [2024-11-09 15:17:45,436 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-09 15:17:45,436 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 15:17:45,436 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 15:17:45,436 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 15:17:45,437 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:17:45" (3/4) ... [2024-11-09 15:17:45,438 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-09 15:17:45,465 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 15:17:45,465 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 15:17:45,467 INFO L158 Benchmark]: Toolchain (without parser) took 890.80ms. Allocated memory is still 144.7MB. Free memory was 73.4MB in the beginning and 70.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-11-09 15:17:45,467 INFO L158 Benchmark]: CDTParser took 0.64ms. Allocated memory is still 144.7MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:17:45,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.72ms. Allocated memory is still 144.7MB. Free memory was 73.1MB in the beginning and 112.6MB in the end (delta: -39.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-11-09 15:17:45,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.64ms. Allocated memory is still 144.7MB. Free memory was 112.6MB in the beginning and 111.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:17:45,468 INFO L158 Benchmark]: Boogie Preprocessor took 29.57ms. Allocated memory is still 144.7MB. Free memory was 111.3MB in the beginning and 110.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 15:17:45,469 INFO L158 Benchmark]: RCFGBuilder took 209.51ms. Allocated memory is still 144.7MB. Free memory was 110.0MB in the beginning and 100.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 15:17:45,469 INFO L158 Benchmark]: BuchiAutomizer took 400.50ms. Allocated memory is still 144.7MB. Free memory was 100.1MB in the beginning and 72.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-09 15:17:45,471 INFO L158 Benchmark]: Witness Printer took 29.76ms. Allocated memory is still 144.7MB. Free memory was 72.8MB in the beginning and 70.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 15:17:45,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64ms. Allocated memory is still 144.7MB. Free memory is still 99.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.72ms. Allocated memory is still 144.7MB. Free memory was 73.1MB in the beginning and 112.6MB in the end (delta: -39.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.64ms. Allocated memory is still 144.7MB. Free memory was 112.6MB in the beginning and 111.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.57ms. Allocated memory is still 144.7MB. Free memory was 111.3MB in the beginning and 110.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 209.51ms. Allocated memory is still 144.7MB. Free memory was 110.0MB in the beginning and 100.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 400.50ms. Allocated memory is still 144.7MB. Free memory was 100.1MB in the beginning and 72.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 29.76ms. Allocated memory is still 144.7MB. Free memory was 72.8MB in the beginning and 70.6MB 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 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 0.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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! [2024-11-09 15:17:45,502 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)