./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/NO_21.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/NO_21.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 09b58293612eb320ba1daf9ca7fe4947dbbcf9de2baf65b6860d058db21da006 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:52:42,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:52:42,941 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-03-17 19:52:42,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:52:42,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:52:42,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-17 19:52:42,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:52:42,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:52:42,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:52:42,967 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:52:42,968 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:52:42,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:52:42,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:52:42,968 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:52:42,969 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-17 19:52:42,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-17 19:52:42,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-17 19:52:42,970 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:52:42,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:52:42,970 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-17 19:52:42,970 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:52:42,970 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:52:42,970 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:52:42,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:52:42,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:52:42,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:52:42,971 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-17 19:52:42,971 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09b58293612eb320ba1daf9ca7fe4947dbbcf9de2baf65b6860d058db21da006 [2025-03-17 19:52:43,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:52:43,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:52:43,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:52:43,194 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:52:43,194 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:52:43,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_21.c [2025-03-17 19:52:44,283 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ac582f9/fb3704deac43461ea0fe388180482984/FLAGc0d444dd1 [2025-03-17 19:52:44,512 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:52:44,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_21.c [2025-03-17 19:52:44,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ac582f9/fb3704deac43461ea0fe388180482984/FLAGc0d444dd1 [2025-03-17 19:52:44,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ac582f9/fb3704deac43461ea0fe388180482984 [2025-03-17 19:52:44,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:52:44,547 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:52:44,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:52:44,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:52:44,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:52:44,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b12cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44, skipping insertion in model container [2025-03-17 19:52:44,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,565 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:52:44,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:52:44,654 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:52:44,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:52:44,671 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:52:44,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44 WrapperNode [2025-03-17 19:52:44,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:52:44,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:52:44,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:52:44,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:52:44,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,689 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9 [2025-03-17 19:52:44,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:52:44,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:52:44,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:52:44,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:52:44,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,699 INFO L175 MemorySlicer]: No memory access in input program. [2025-03-17 19:52:44,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,701 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:52:44,705 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:52:44,705 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:52:44,705 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:52:44,706 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (1/1) ... [2025-03-17 19:52:44,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-17 19:52:44,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:52:44,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-03-17 19:52:44,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-03-17 19:52:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:52:44,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:52:44,796 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:52:44,798 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:52:44,842 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2025-03-17 19:52:44,842 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:52:44,848 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:52:44,848 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:52:44,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:52:44 BoogieIcfgContainer [2025-03-17 19:52:44,849 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:52:44,850 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-17 19:52:44,850 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-17 19:52:44,854 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-17 19:52:44,854 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:52:44,855 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.03 07:52:44" (1/3) ... [2025-03-17 19:52:44,855 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3cffd7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 07:52:44, skipping insertion in model container [2025-03-17 19:52:44,855 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:52:44,856 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:52:44" (2/3) ... [2025-03-17 19:52:44,856 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3cffd7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.03 07:52:44, skipping insertion in model container [2025-03-17 19:52:44,856 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-17 19:52:44,856 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:52:44" (3/3) ... [2025-03-17 19:52:44,857 INFO L363 chiAutomizerObserver]: Analyzing ICFG NO_21.c [2025-03-17 19:52:44,897 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-17 19:52:44,897 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-17 19:52:44,897 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-17 19:52:44,897 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-17 19:52:44,897 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-17 19:52:44,898 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-17 19:52:44,898 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-17 19:52:44,898 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-17 19:52:44,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:52:44,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-03-17 19:52:44,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:52:44,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:52:44,914 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-03-17 19:52:44,915 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-03-17 19:52:44,915 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-17 19:52:44,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:52:44,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2025-03-17 19:52:44,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-17 19:52:44,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-17 19:52:44,917 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-03-17 19:52:44,917 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2025-03-17 19:52:44,922 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0;" [2025-03-17 19:52:44,922 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 < 100;main_~i~0#1 := 1 + main_~i~0#1;main_~i~0#1 := main_~i~0#1 - 1;" [2025-03-17 19:52:44,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:52:44,926 INFO L85 PathProgramCache]: Analyzing trace with hash 33, now seen corresponding path program 1 times [2025-03-17 19:52:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:52:44,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311536685] [2025-03-17 19:52:44,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:52:44,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:52:44,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:52:44,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:52:44,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:52:44,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:52:44,984 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:52:44,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:52:44,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:52:44,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:52:44,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:52:44,996 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:52:44,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:52:44,999 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2025-03-17 19:52:44,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:52:44,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631089926] [2025-03-17 19:52:44,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:52:44,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:52:45,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:52:45,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:52:45,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:52:45,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:52:45,009 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:52:45,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:52:45,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:52:45,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:52:45,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:52:45,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:52:45,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:52:45,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1024, now seen corresponding path program 1 times [2025-03-17 19:52:45,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:52:45,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009624528] [2025-03-17 19:52:45,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:52:45,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:52:45,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:52:45,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:52:45,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:52:45,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:52:45,026 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:52:45,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-03-17 19:52:45,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-03-17 19:52:45,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:52:45,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:52:45,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:52:45,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:52:45,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:52:45,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:52:45,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:52:45,085 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:52:45,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-03-17 19:52:45,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-03-17 19:52:45,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:52:45,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:52:45,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.03 07:52:45 BoogieIcfgContainer [2025-03-17 19:52:45,102 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-17 19:52:45,103 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:52:45,103 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:52:45,103 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:52:45,103 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:52:44" (3/4) ... [2025-03-17 19:52:45,104 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-03-17 19:52:45,125 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:52:45,125 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:52:45,126 INFO L158 Benchmark]: Toolchain (without parser) took 578.52ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 84.4MB in the end (delta: 37.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 19:52:45,126 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:52:45,126 INFO L158 Benchmark]: CACSL2BoogieTranslator took 123.14ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 111.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:52:45,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.07ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 110.9MB in the end (delta: 882.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:52:45,126 INFO L158 Benchmark]: Boogie Preprocessor took 14.80ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 110.0MB in the end (delta: 844.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:52:45,127 INFO L158 Benchmark]: IcfgBuilder took 144.16ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 100.6MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:52:45,127 INFO L158 Benchmark]: BuchiAutomizer took 252.25ms. Allocated memory is still 167.8MB. Free memory was 100.6MB in the beginning and 87.2MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 19:52:45,127 INFO L158 Benchmark]: Witness Printer took 22.35ms. Allocated memory is still 167.8MB. Free memory was 87.2MB in the beginning and 84.4MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:52:45,128 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 123.14ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 111.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.07ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 110.9MB in the end (delta: 882.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.80ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 110.0MB in the end (delta: 844.6kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 144.16ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 100.6MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 252.25ms. Allocated memory is still 167.8MB. Free memory was 100.6MB in the beginning and 87.2MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 22.35ms. Allocated memory is still 167.8MB. Free memory was 87.2MB in the beginning and 84.4MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = 0 VAL [i=0] Loop: [L9] COND TRUE i < 100 [L10] i = i+1 [L11] i = i-1 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = 0 VAL [i=0] Loop: [L9] COND TRUE i < 100 [L10] i = i+1 [L11] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-03-17 19:52:45,138 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)