./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/loops/while_infinite_loop_3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 92296dc205042e203e49a0f508dfdcdcae7c81ca61407e6509b5b78fafc04385 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:36:01,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:36:01,123 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-23 02:36:01,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:36:01,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:36:01,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:36:01,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:36:01,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:36:01,161 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:36:01,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:36:01,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:36:01,163 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:36:01,164 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:36:01,164 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-23 02:36:01,166 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-23 02:36:01,166 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-23 02:36:01,167 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-23 02:36:01,167 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-23 02:36:01,167 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-23 02:36:01,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:36:01,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-23 02:36:01,172 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:36:01,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:36:01,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:36:01,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:36:01,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-23 02:36:01,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-23 02:36:01,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-23 02:36:01,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:36:01,174 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:36:01,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:36:01,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:36:01,174 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-23 02:36:01,174 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:36:01,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:36:01,175 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:36:01,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:36:01,175 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:36:01,176 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-23 02:36:01,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92296dc205042e203e49a0f508dfdcdcae7c81ca61407e6509b5b78fafc04385 [2024-11-23 02:36:01,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:36:01,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:36:01,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:36:01,444 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:36:01,445 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:36:01,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_3.c [2024-11-23 02:36:02,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:36:03,084 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:36:03,084 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c [2024-11-23 02:36:03,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c5cdc1c2/7d79efc840474e3888e6e0bb1c03270d/FLAG465735030 [2024-11-23 02:36:03,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c5cdc1c2/7d79efc840474e3888e6e0bb1c03270d [2024-11-23 02:36:03,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:36:03,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:36:03,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:36:03,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:36:03,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:36:03,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8568a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03, skipping insertion in model container [2024-11-23 02:36:03,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:36:03,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:36:03,755 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:36:03,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:36:03,789 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:36:03,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03 WrapperNode [2024-11-23 02:36:03,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:36:03,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:36:03,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:36:03,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:36:03,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,834 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 40 [2024-11-23 02:36:03,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:36:03,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:36:03,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:36:03,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:36:03,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,865 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 02:36:03,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:36:03,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:36:03,884 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:36:03,884 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:36:03,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (1/1) ... [2024-11-23 02:36:03,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:36:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:36:03,923 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) [2024-11-23 02:36:03,930 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 [2024-11-23 02:36:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:36:03,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:36:03,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:36:03,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:36:04,016 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:36:04,019 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:36:04,100 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-23 02:36:04,100 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:36:04,111 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:36:04,112 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 02:36:04,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:04 BoogieIcfgContainer [2024-11-23 02:36:04,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:36:04,115 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-23 02:36:04,115 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-23 02:36:04,119 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-23 02:36:04,120 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:36:04,122 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:36:03" (1/3) ... [2024-11-23 02:36:04,123 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79048821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:36:04, skipping insertion in model container [2024-11-23 02:36:04,123 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:36:04,123 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:03" (2/3) ... [2024-11-23 02:36:04,123 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79048821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:36:04, skipping insertion in model container [2024-11-23 02:36:04,124 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:36:04,124 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:04" (3/3) ... [2024-11-23 02:36:04,126 INFO L332 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_3.c [2024-11-23 02:36:04,210 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-23 02:36:04,211 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-23 02:36:04,211 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-23 02:36:04,211 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-23 02:36:04,211 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-23 02:36:04,212 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-23 02:36:04,212 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-23 02:36:04,213 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-23 02:36:04,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2024-11-23 02:36:04,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-23 02:36:04,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:36:04,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:36:04,237 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-23 02:36:04,237 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-11-23 02:36:04,237 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-23 02:36:04,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2024-11-23 02:36:04,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-11-23 02:36:04,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:36:04,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:36:04,239 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-23 02:36:04,239 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-11-23 02:36:04,247 INFO L745 eck$LassoCheckResult]: Stem: 13#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 12#L26-2true [2024-11-23 02:36:04,247 INFO L747 eck$LassoCheckResult]: Loop: 12#L26-2true assume !false;assume { :begin_inline_eval } true; 16#$Ultimate##11true assume false; 14#L16-2true assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 10#L6true assume !(0 == __VERIFIER_assert_~cond#1); 3#L6-2true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 12#L26-2true [2024-11-23 02:36:04,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:36:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-23 02:36:04,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:36:04,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335900952] [2024-11-23 02:36:04,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:36:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:36:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:36:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:36:04,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:36:04,391 INFO L85 PathProgramCache]: Analyzing trace with hash 39349236, now seen corresponding path program 1 times [2024-11-23 02:36:04,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:36:04,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739784363] [2024-11-23 02:36:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:36:04,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:36:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:36:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:36:04,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:36:04,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739784363] [2024-11-23 02:36:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739784363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:36:04,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:36:04,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:36:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321193954] [2024-11-23 02:36:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:36:04,453 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-23 02:36:04,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:36:04,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 02:36:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 02:36:04,492 INFO L87 Difference]: Start difference. First operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-23 02:36:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:36:04,498 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2024-11-23 02:36:04,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 8 transitions. [2024-11-23 02:36:04,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:36:04,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 7 states and 7 transitions. [2024-11-23 02:36:04,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-23 02:36:04,505 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2024-11-23 02:36:04,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2024-11-23 02:36:04,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-23 02:36:04,506 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-11-23 02:36:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2024-11-23 02:36:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-11-23 02:36:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 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) [2024-11-23 02:36:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2024-11-23 02:36:04,533 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-11-23 02:36:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 02:36:04,539 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-11-23 02:36:04,539 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-23 02:36:04,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2024-11-23 02:36:04,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:36:04,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:36:04,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:36:04,540 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-23 02:36:04,541 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2024-11-23 02:36:04,541 INFO L745 eck$LassoCheckResult]: Stem: 37#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3);~x~0 := 0; 38#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 34#L26-2 [2024-11-23 02:36:04,541 INFO L747 eck$LassoCheckResult]: Loop: 34#L26-2 assume !false;assume { :begin_inline_eval } true; 36#$Ultimate##11 assume !false;~x~0 := 0; 39#L16-2 assume { :end_inline_eval } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 35#L6 assume !(0 == __VERIFIER_assert_~cond#1); 33#L6-2 havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true; 34#L26-2 [2024-11-23 02:36:04,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:36:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-23 02:36:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:36:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25086064] [2024-11-23 02:36:04,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:36:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:36:04,559 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:36:04,561 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:36:04,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:36:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:36:04,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:36:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash 39408818, now seen corresponding path program 1 times [2024-11-23 02:36:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:36:04,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246277506] [2024-11-23 02:36:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:36:04,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:36:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:36:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:36:04,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:36:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1810848304, now seen corresponding path program 1 times [2024-11-23 02:36:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:36:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906701859] [2024-11-23 02:36:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:36:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:36:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:36:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:36:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:36:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:36:04,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:36:04 BoogieIcfgContainer [2024-11-23 02:36:04,880 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-23 02:36:04,881 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 02:36:04,881 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 02:36:04,881 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 02:36:04,882 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:04" (3/4) ... [2024-11-23 02:36:04,884 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-23 02:36:04,927 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-23 02:36:04,928 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 02:36:04,928 INFO L158 Benchmark]: Toolchain (without parser) took 1429.67ms. Allocated memory is still 165.7MB. Free memory was 139.0MB in the beginning and 76.9MB in the end (delta: 62.1MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2024-11-23 02:36:04,929 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 121.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:36:04,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.53ms. Allocated memory is still 165.7MB. Free memory was 138.8MB in the beginning and 128.3MB in the end (delta: 10.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-11-23 02:36:04,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.54ms. Allocated memory is still 165.7MB. Free memory was 128.3MB in the beginning and 127.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:36:04,930 INFO L158 Benchmark]: Boogie Preprocessor took 44.87ms. Allocated memory is still 165.7MB. Free memory was 126.2MB in the beginning and 125.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:36:04,931 INFO L158 Benchmark]: RCFGBuilder took 230.60ms. Allocated memory is still 165.7MB. Free memory was 125.1MB in the beginning and 114.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-23 02:36:04,931 INFO L158 Benchmark]: BuchiAutomizer took 765.15ms. Allocated memory is still 165.7MB. Free memory was 114.6MB in the beginning and 79.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-11-23 02:36:04,932 INFO L158 Benchmark]: Witness Printer took 46.93ms. Allocated memory is still 165.7MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:36:04,934 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 121.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.53ms. Allocated memory is still 165.7MB. Free memory was 138.8MB in the beginning and 128.3MB in the end (delta: 10.5MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.54ms. Allocated memory is still 165.7MB. Free memory was 128.3MB in the beginning and 127.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.87ms. Allocated memory is still 165.7MB. Free memory was 126.2MB in the beginning and 125.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 230.60ms. Allocated memory is still 165.7MB. Free memory was 125.1MB in the beginning and 114.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 765.15ms. Allocated memory is still 165.7MB. Free memory was 114.6MB in the beginning and 79.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 46.93ms. Allocated memory is still 165.7MB. Free memory was 79.0MB in the beginning and 76.9MB 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 2 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 0 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: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L12] int x=0; VAL [x=0] Loop: [L26] COND TRUE 1 [L28] CALL eval() [L16] COND TRUE 1 [L17] x=0 [L28] RET eval() [L29] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(x==0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; VAL [x=0] Loop: [L26] COND TRUE 1 [L28] CALL eval() [L16] COND TRUE 1 [L17] x=0 [L28] RET eval() [L29] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-23 02:36:04,958 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)