./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3289d67d 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/Ex02.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 afd40820c7a09c073d225c09c6690862ff04506300463cb312087d541b42d981 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 08:03:23,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 08:03:23,391 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-17 08:03:23,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 08:03:23,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 08:03:23,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-17 08:03:23,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 08:03:23,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 08:03:23,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 08:03:23,422 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 08:03:23,422 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 08:03:23,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 08:03:23,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 08:03:23,423 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 08:03:23,423 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-17 08:03:23,424 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-17 08:03:23,424 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-17 08:03:23,424 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-17 08:03:23,425 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-17 08:03:23,425 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-17 08:03:23,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 08:03:23,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-17 08:03:23,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 08:03:23,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 08:03:23,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-17 08:03:23,428 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-17 08:03:23,428 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-17 08:03:23,429 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 08:03:23,429 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 08:03:23,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 08:03:23,429 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-17 08:03:23,429 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 08:03:23,429 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 08:03:23,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 08:03:23,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 08:03:23,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 08:03:23,430 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-17 08:03:23,431 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afd40820c7a09c073d225c09c6690862ff04506300463cb312087d541b42d981 [2024-11-17 08:03:23,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 08:03:23,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 08:03:23,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 08:03:23,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 08:03:23,626 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 08:03:23,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex02.c [2024-11-17 08:03:24,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 08:03:24,949 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 08:03:24,949 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex02.c [2024-11-17 08:03:24,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bcd41a0e/018b1e3e32ff412b9bd1f575f41e8afa/FLAG8d908726f [2024-11-17 08:03:24,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bcd41a0e/018b1e3e32ff412b9bd1f575f41e8afa [2024-11-17 08:03:24,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 08:03:24,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 08:03:24,968 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 08:03:24,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 08:03:24,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 08:03:24,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:03:24" (1/1) ... [2024-11-17 08:03:24,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcf00a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:24, skipping insertion in model container [2024-11-17 08:03:24,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:03:24" (1/1) ... [2024-11-17 08:03:24,986 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 08:03:25,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:03:25,107 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 08:03:25,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:03:25,127 INFO L204 MainTranslator]: Completed translation [2024-11-17 08:03:25,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25 WrapperNode [2024-11-17 08:03:25,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 08:03:25,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 08:03:25,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 08:03:25,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 08:03:25,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,148 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2024-11-17 08:03:25,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 08:03:25,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 08:03:25,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 08:03:25,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 08:03:25,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,160 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-17 08:03:25,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,162 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 08:03:25,164 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 08:03:25,164 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 08:03:25,164 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 08:03:25,165 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (1/1) ... [2024-11-17 08:03:25,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:25,190 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) [2024-11-17 08:03:25,192 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 [2024-11-17 08:03:25,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 08:03:25,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 08:03:25,276 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 08:03:25,278 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 08:03:25,312 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-17 08:03:25,312 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 08:03:25,323 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 08:03:25,323 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 08:03:25,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:03:25 BoogieIcfgContainer [2024-11-17 08:03:25,323 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 08:03:25,324 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-17 08:03:25,324 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-17 08:03:25,327 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-17 08:03:25,327 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:03:25,328 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.11 08:03:24" (1/3) ... [2024-11-17 08:03:25,328 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1219b580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:03:25, skipping insertion in model container [2024-11-17 08:03:25,328 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:03:25,328 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:03:25" (2/3) ... [2024-11-17 08:03:25,329 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1219b580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:03:25, skipping insertion in model container [2024-11-17 08:03:25,329 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:03:25,329 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:03:25" (3/3) ... [2024-11-17 08:03:25,330 INFO L332 chiAutomizerObserver]: Analyzing ICFG Ex02.c [2024-11-17 08:03:25,372 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-17 08:03:25,373 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-17 08:03:25,373 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-17 08:03:25,373 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-17 08:03:25,373 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-17 08:03:25,374 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-17 08:03:25,374 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-17 08:03:25,374 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-17 08:03:25,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-17 08:03:25,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-17 08:03:25,391 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:03:25,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:03:25,395 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-17 08:03:25,395 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-17 08:03:25,396 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-17 08:03:25,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-17 08:03:25,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-17 08:03:25,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:03:25,398 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:03:25,398 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-17 08:03:25,398 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-17 08:03:25,403 INFO L745 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 5#ULTIMATE.init_returnLabel#1true assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 2#L9true [2024-11-17 08:03:25,404 INFO L747 eck$LassoCheckResult]: Loop: 2#L9true assume true; 6#L9-1true assume !!(main_~i~0#1 > 0); 7#L10true assume 5 != main_~i~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2#L9true [2024-11-17 08:03:25,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:25,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1280, now seen corresponding path program 1 times [2024-11-17 08:03:25,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:25,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129729419] [2024-11-17 08:03:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:25,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:25,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:25,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:25,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:25,489 INFO L85 PathProgramCache]: Analyzing trace with hash 36707, now seen corresponding path program 1 times [2024-11-17 08:03:25,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:25,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910636814] [2024-11-17 08:03:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:25,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:25,498 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:25,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:25,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 38139396, now seen corresponding path program 1 times [2024-11-17 08:03:25,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511818368] [2024-11-17 08:03:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:25,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:25,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:25,575 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:03:25,575 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:03:25,575 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:03:25,575 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:03:25,575 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:03:25,575 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,575 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:03:25,576 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:03:25,576 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex02.c_Iteration1_Loop [2024-11-17 08:03:25,576 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:03:25,576 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:03:25,606 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:25,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:25,617 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:25,725 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:03:25,726 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:03:25,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:25,729 INFO L229 MonitoredProcess]: Starting monitored process 2 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) [2024-11-17 08:03:25,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-17 08:03:25,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:25,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:25,758 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:03:25,758 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:03:25,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-17 08:03:25,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:25,772 INFO L229 MonitoredProcess]: Starting monitored process 3 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) [2024-11-17 08:03:25,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-17 08:03:25,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:25,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:25,792 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:03:25,793 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:03:25,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:25,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:25,806 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2024-11-17 08:03:25,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-17 08:03:25,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:03:25,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:25,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-17 08:03:25,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:25,833 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2024-11-17 08:03:25,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-17 08:03:25,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:03:25,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:03:25,870 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:03:25,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:25,875 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:03:25,875 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:03:25,875 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:03:25,875 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:03:25,875 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:03:25,875 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,875 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:03:25,875 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:03:25,875 INFO L132 ssoRankerPreferences]: Filename of dumped script: Ex02.c_Iteration1_Loop [2024-11-17 08:03:25,875 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:03:25,875 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:03:25,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:25,881 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:25,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:03:25,955 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:03:25,960 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:03:25,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:25,963 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2024-11-17 08:03:25,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-17 08:03:25,965 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:03:25,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:03:25,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:03:25,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:03:25,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:03:25,979 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-17 08:03:25,979 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-17 08:03:25,983 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:03:25,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-17 08:03:25,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:25,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:25,997 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2024-11-17 08:03:25,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-17 08:03:26,000 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:03:26,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:03:26,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:03:26,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:03:26,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:03:26,014 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-17 08:03:26,014 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-17 08:03:26,017 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:03:26,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:26,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:26,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:26,029 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2024-11-17 08:03:26,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-17 08:03:26,030 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:03:26,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:03:26,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:03:26,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:03:26,041 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-11-17 08:03:26,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:03:26,045 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2024-11-17 08:03:26,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:03:26,049 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:03:26,055 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:03:26,055 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:03:26,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:03:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:03:26,074 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2024-11-17 08:03:26,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-17 08:03:26,076 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:03:26,076 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:03:26,076 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:03:26,077 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-17 08:03:26,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-17 08:03:26,089 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:03:26,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:03:26,120 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 08:03:26,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:03:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:03:26,132 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 08:03:26,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:03:26,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:03:26,173 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-17 08:03:26,175 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2024-11-17 08:03:26,211 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) Result 20 states and 26 transitions. Complement of second has 8 states. [2024-11-17 08:03:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-17 08:03:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2024-11-17 08:03:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2024-11-17 08:03:26,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 3 letters. [2024-11-17 08:03:26,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:26,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 5 letters. Loop has 3 letters. [2024-11-17 08:03:26,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:26,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 6 letters. [2024-11-17 08:03:26,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:03:26,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2024-11-17 08:03:26,227 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-17 08:03:26,229 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 12 states and 15 transitions. [2024-11-17 08:03:26,230 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-17 08:03:26,230 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2024-11-17 08:03:26,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2024-11-17 08:03:26,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:03:26,231 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-11-17 08:03:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2024-11-17 08:03:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2024-11-17 08:03:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2024-11-17 08:03:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2024-11-17 08:03:26,250 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-17 08:03:26,250 INFO L425 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2024-11-17 08:03:26,250 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-17 08:03:26,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2024-11-17 08:03:26,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-17 08:03:26,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:03:26,251 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:03:26,251 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-17 08:03:26,251 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-17 08:03:26,251 INFO L745 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 76#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 79#L9 assume true; 72#L9-1 [2024-11-17 08:03:26,252 INFO L747 eck$LassoCheckResult]: Loop: 72#L9-1 assume !!(main_~i~0#1 > 0); 77#L10 assume !(5 != main_~i~0#1); 71#L9 assume true; 72#L9-1 [2024-11-17 08:03:26,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash 39687, now seen corresponding path program 1 times [2024-11-17 08:03:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268337189] [2024-11-17 08:03:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:26,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:26,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:26,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:26,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 35688, now seen corresponding path program 1 times [2024-11-17 08:03:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:26,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100413856] [2024-11-17 08:03:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:26,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:26,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:26,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:26,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:03:26,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1182321314, now seen corresponding path program 1 times [2024-11-17 08:03:26,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:03:26,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426236339] [2024-11-17 08:03:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:03:26,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:03:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:26,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:26,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:03:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:26,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:03:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:03:26,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.11 08:03:26 BoogieIcfgContainer [2024-11-17 08:03:26,315 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-17 08:03:26,316 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 08:03:26,316 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 08:03:26,316 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 08:03:26,316 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:03:25" (3/4) ... [2024-11-17 08:03:26,318 INFO L140 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-17 08:03:26,345 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 08:03:26,346 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 08:03:26,348 INFO L158 Benchmark]: Toolchain (without parser) took 1380.26ms. Allocated memory was 161.5MB in the beginning and 226.5MB in the end (delta: 65.0MB). Free memory was 106.2MB in the beginning and 155.5MB in the end (delta: -49.3MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2024-11-17 08:03:26,351 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 161.5MB. Free memory is still 121.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:03:26,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.39ms. Allocated memory is still 161.5MB. Free memory was 106.2MB in the beginning and 94.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-17 08:03:26,351 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.75ms. Allocated memory is still 161.5MB. Free memory was 94.8MB in the beginning and 93.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:03:26,351 INFO L158 Benchmark]: Boogie Preprocessor took 14.84ms. Allocated memory is still 161.5MB. Free memory was 93.6MB in the beginning and 92.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:03:26,352 INFO L158 Benchmark]: IcfgBuilder took 159.12ms. Allocated memory is still 161.5MB. Free memory was 92.3MB in the beginning and 83.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-17 08:03:26,352 INFO L158 Benchmark]: BuchiAutomizer took 991.22ms. Allocated memory was 161.5MB in the beginning and 226.5MB in the end (delta: 65.0MB). Free memory was 83.2MB in the beginning and 156.5MB in the end (delta: -73.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:03:26,352 INFO L158 Benchmark]: Witness Printer took 30.86ms. Allocated memory is still 226.5MB. Free memory was 156.5MB in the beginning and 155.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:03:26,355 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 161.5MB. Free memory is still 121.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.39ms. Allocated memory is still 161.5MB. Free memory was 106.2MB in the beginning and 94.8MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.75ms. Allocated memory is still 161.5MB. Free memory was 94.8MB in the beginning and 93.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.84ms. Allocated memory is still 161.5MB. Free memory was 93.6MB in the beginning and 92.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 159.12ms. Allocated memory is still 161.5MB. Free memory was 92.3MB in the beginning and 83.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 991.22ms. Allocated memory was 161.5MB in the beginning and 226.5MB in the end (delta: 65.0MB). Free memory was 83.2MB in the beginning and 156.5MB in the end (delta: -73.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 30.86ms. Allocated memory is still 226.5MB. Free memory was 156.5MB in the beginning and 155.5MB in the end (delta: 1.0MB). 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 Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 5 locations. The remainder module has 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 4 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf95 smp100 dnf156 smp91 tf106 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s 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 = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 [L10] COND FALSE !(i != 5) 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 = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 [L10] COND FALSE !(i != 5) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-17 08:03:26,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-17 08:03:26,580 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)