./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/GCD-1.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 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:54:21,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:54:21,563 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-12 20:54:21,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:54:21,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:54:21,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:54:21,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:54:21,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:54:21,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:54:21,610 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:54:21,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:54:21,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:54:21,611 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:54:21,612 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-12 20:54:21,615 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-12 20:54:21,615 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-12 20:54:21,616 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-12 20:54:21,616 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-12 20:54:21,616 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-12 20:54:21,616 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:54:21,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-12 20:54:21,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:54:21,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:54:21,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-12 20:54:21,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-12 20:54:21,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-12 20:54:21,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:54:21,619 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:54:21,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:54:21,619 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-12 20:54:21,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:54:21,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:54:21,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:54:21,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:54:21,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:54:21,621 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-12 20:54:21,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 [2024-11-12 20:54:21,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:54:21,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:54:21,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:54:21,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:54:21,894 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:54:21,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2024-11-12 20:54:23,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:54:23,537 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:54:23,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2024-11-12 20:54:23,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3bf611d/e3017329bcc74f768d6e6b1f358fb44e/FLAG80f02fa95 [2024-11-12 20:54:23,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3bf611d/e3017329bcc74f768d6e6b1f358fb44e [2024-11-12 20:54:23,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:54:23,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:54:23,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:54:23,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:54:23,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:54:23,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1ee7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23, skipping insertion in model container [2024-11-12 20:54:23,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:54:23,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:54:23,762 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:54:23,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:54:23,807 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:54:23,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23 WrapperNode [2024-11-12 20:54:23,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:54:23,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:54:23,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:54:23,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:54:23,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,851 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2024-11-12 20:54:23,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:54:23,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:54:23,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:54:23,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:54:23,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,868 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-12 20:54:23,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,874 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:54:23,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:54:23,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:54:23,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:54:23,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (1/1) ... [2024-11-12 20:54:23,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:54:23,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:54:23,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:54:23,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-12 20:54:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:54:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:54:24,041 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:54:24,043 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:54:24,129 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-12 20:54:24,130 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:54:24,148 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:54:24,148 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:54:24,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:54:24 BoogieIcfgContainer [2024-11-12 20:54:24,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:54:24,150 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-12 20:54:24,150 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-12 20:54:24,154 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-12 20:54:24,154 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:54:24,155 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 08:54:23" (1/3) ... [2024-11-12 20:54:24,156 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42ff1126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:54:24, skipping insertion in model container [2024-11-12 20:54:24,156 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:54:24,156 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:54:23" (2/3) ... [2024-11-12 20:54:24,157 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42ff1126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:54:24, skipping insertion in model container [2024-11-12 20:54:24,157 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:54:24,157 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:54:24" (3/3) ... [2024-11-12 20:54:24,158 INFO L332 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2024-11-12 20:54:24,220 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2024-11-12 20:54:24,221 INFO L302 stractBuchiCegarLoop]: Hoare is None [2024-11-12 20:54:24,221 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-12 20:54:24,221 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-12 20:54:24,221 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-12 20:54:24,221 INFO L306 stractBuchiCegarLoop]: Difference is false [2024-11-12 20:54:24,222 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-12 20:54:24,222 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-12 20:54:24,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:54:24,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:54:24,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:54:24,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:54:24,249 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:54:24,249 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:54:24,250 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-12 20:54:24,251 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:54:24,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:54:24,252 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:54:24,252 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:54:24,253 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:54:24,253 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:54:24,260 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:54:24,260 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(0 != main_~y~0#1);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1;" "assume main_~x~0#1 <= 0 || main_~y~0#1 <= 0;main_~y~0#1 := 0;" "main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1;" [2024-11-12 20:54:24,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:24,270 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-12 20:54:24,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:24,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599055009] [2024-11-12 20:54:24,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:24,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:24,356 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:24,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:24,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash 40830, now seen corresponding path program 1 times [2024-11-12 20:54:24,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:24,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425035939] [2024-11-12 20:54:24,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:24,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:24,391 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:24,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:24,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:54:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 28699772, now seen corresponding path program 1 times [2024-11-12 20:54:24,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:54:24,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359859953] [2024-11-12 20:54:24,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:54:24,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:54:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:24,419 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:24,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:54:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:24,579 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:54:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:54:24,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 08:54:24 BoogieIcfgContainer [2024-11-12 20:54:24,598 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-12 20:54:24,599 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:54:24,599 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:54:24,599 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:54:24,600 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:54:24" (3/4) ... [2024-11-12 20:54:24,601 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-12 20:54:24,631 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 20:54:24,631 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:54:24,633 INFO L158 Benchmark]: Toolchain (without parser) took 1073.11ms. Allocated memory is still 182.5MB. Free memory was 111.2MB in the beginning and 116.6MB in the end (delta: -5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:54:24,634 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 141.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:54:24,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.03ms. Allocated memory is still 182.5MB. Free memory was 111.0MB in the beginning and 152.7MB in the end (delta: -41.7MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2024-11-12 20:54:24,634 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.73ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 151.1MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 20:54:24,635 INFO L158 Benchmark]: Boogie Preprocessor took 23.12ms. Allocated memory is still 182.5MB. Free memory was 151.1MB in the beginning and 150.2MB in the end (delta: 900.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:54:24,636 INFO L158 Benchmark]: RCFGBuilder took 273.25ms. Allocated memory is still 182.5MB. Free memory was 150.2MB in the beginning and 139.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-12 20:54:24,636 INFO L158 Benchmark]: BuchiAutomizer took 448.66ms. Allocated memory is still 182.5MB. Free memory was 139.7MB in the beginning and 118.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-12 20:54:24,636 INFO L158 Benchmark]: Witness Printer took 32.42ms. Allocated memory is still 182.5MB. Free memory was 118.7MB in the beginning and 116.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:54:24,639 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 182.5MB. Free memory is still 141.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.03ms. Allocated memory is still 182.5MB. Free memory was 111.0MB in the beginning and 152.7MB in the end (delta: -41.7MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.73ms. Allocated memory is still 182.5MB. Free memory was 152.7MB in the beginning and 151.1MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.12ms. Allocated memory is still 182.5MB. Free memory was 151.1MB in the beginning and 150.2MB in the end (delta: 900.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 273.25ms. Allocated memory is still 182.5MB. Free memory was 150.2MB in the beginning and 139.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 448.66ms. Allocated memory is still 182.5MB. Free memory was 139.7MB in the beginning and 118.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 32.42ms. Allocated memory is still 182.5MB. Free memory was 118.7MB in the beginning and 116.6MB 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 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: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE y != 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE y != 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-12 20:54:24,662 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)