./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3061b6dc 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-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.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 bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:14:16,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:14:16,449 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-19 14:14:16,453 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:14:16,453 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:14:16,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:14:16,486 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:14:16,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:14:16,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:14:16,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:14:16,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:14:16,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:14:16,489 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:14:16,490 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-19 14:14:16,490 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-19 14:14:16,490 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-19 14:14:16,490 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-19 14:14:16,491 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-19 14:14:16,491 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-19 14:14:16,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:14:16,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-19 14:14:16,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:14:16,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:14:16,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-19 14:14:16,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-19 14:14:16,497 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-19 14:14:16,497 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:14:16,497 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:14:16,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:14:16,498 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-19 14:14:16,498 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:14:16,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:14:16,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:14:16,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:14:16,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:14:16,499 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-19 14:14:16,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba [2024-11-19 14:14:16,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:14:16,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:14:16,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:14:16,762 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:14:16,763 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:14:16,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-19 14:14:18,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:14:18,319 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:14:18,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-19 14:14:18,327 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760abfda1/07434323e86040b48ed0ce3f7d1597d4/FLAG5d6dcf6a8 [2024-11-19 14:14:18,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760abfda1/07434323e86040b48ed0ce3f7d1597d4 [2024-11-19 14:14:18,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:14:18,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:14:18,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:14:18,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:14:18,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:14:18,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e78356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18, skipping insertion in model container [2024-11-19 14:14:18,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:14:18,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:14:18,908 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:14:18,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:14:18,930 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:14:18,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18 WrapperNode [2024-11-19 14:14:18,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:14:18,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:14:18,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:14:18,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:14:18,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,940 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,950 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2024-11-19 14:14:18,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:14:18,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:14:18,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:14:18,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:14:18,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,967 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-19 14:14:18,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:14:18,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:14:18,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:14:18,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:14:18,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (1/1) ... [2024-11-19 14:14:18,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:18,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,010 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) [2024-11-19 14:14:19,019 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 [2024-11-19 14:14:19,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:14:19,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:14:19,162 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:14:19,165 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:14:19,206 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-19 14:14:19,206 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:14:19,220 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:14:19,220 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 14:14:19,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:19 BoogieIcfgContainer [2024-11-19 14:14:19,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:14:19,223 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-19 14:14:19,223 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-19 14:14:19,226 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-19 14:14:19,227 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:14:19,227 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 02:14:18" (1/3) ... [2024-11-19 14:14:19,228 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@355516f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 02:14:19, skipping insertion in model container [2024-11-19 14:14:19,229 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:14:19,229 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:14:18" (2/3) ... [2024-11-19 14:14:19,229 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@355516f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 02:14:19, skipping insertion in model container [2024-11-19 14:14:19,230 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:14:19,230 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:19" (3/3) ... [2024-11-19 14:14:19,231 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2024-11-19 14:14:19,279 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-19 14:14:19,279 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-19 14:14:19,279 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-19 14:14:19,279 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-19 14:14:19,280 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-19 14:14:19,280 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-19 14:14:19,280 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-19 14:14:19,280 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-19 14:14:19,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2024-11-19 14:14:19,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:19,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:14:19,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:14:19,300 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-19 14:14:19,300 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:14:19,300 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-19 14:14:19,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2024-11-19 14:14:19,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:19,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:14:19,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:14:19,302 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-19 14:14:19,302 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:14:19,308 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L17-2true [2024-11-19 14:14:19,309 INFO L747 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0#1); 4#L17true assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 3#L17-2true [2024-11-19 14:14:19,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:19,313 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-19 14:14:19,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:19,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550918063] [2024-11-19 14:14:19,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:14:19,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:19,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:19,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:19,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:19,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2024-11-19 14:14:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:19,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245441303] [2024-11-19 14:14:19,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:14:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:19,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:19,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:19,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:19,431 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2024-11-19 14:14:19,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:19,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772170388] [2024-11-19 14:14:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:14:19,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:19,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:19,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:19,517 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:14:19,518 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:14:19,518 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:14:19,518 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:14:19,518 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:14:19,518 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,518 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:14:19,518 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:14:19,519 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2024-11-19 14:14:19,519 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:14:19,519 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:14:19,531 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:19,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:19,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:19,607 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:14:19,608 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:14:19,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,616 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) [2024-11-19 14:14:19,621 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 [2024-11-19 14:14:19,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:14:19,625 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:19,648 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:14:19,648 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: [] [2024-11-19 14:14:19,660 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 [2024-11-19 14:14:19,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,662 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) [2024-11-19 14:14:19,663 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 [2024-11-19 14:14:19,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:14:19,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:19,690 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:14:19,690 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: [] [2024-11-19 14:14:19,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-19 14:14:19,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,719 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) [2024-11-19 14:14:19,720 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 [2024-11-19 14:14:19,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:14:19,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:19,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:19,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,749 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) [2024-11-19 14:14:19,750 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 [2024-11-19 14:14:19,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:14:19,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:19,781 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:14:19,786 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 [2024-11-19 14:14:19,787 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:14:19,787 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:14:19,787 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:14:19,788 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:14:19,788 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:14:19,788 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,788 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:14:19,788 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:14:19,788 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2024-11-19 14:14:19,788 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:14:19,788 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:14:19,791 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:19,794 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:19,797 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:19,842 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:14:19,846 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:14:19,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,848 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) [2024-11-19 14:14:19,852 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 [2024-11-19 14:14:19,852 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 [2024-11-19 14:14:19,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:14:19,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:14:19,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:14:19,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:14:19,866 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:14:19,866 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:14:19,870 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:14:19,884 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 [2024-11-19 14:14:19,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,886 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) [2024-11-19 14:14:19,889 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 [2024-11-19 14:14:19,889 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 [2024-11-19 14:14:19,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:14:19,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:14:19,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:14:19,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:14:19,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:14:19,903 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:14:19,906 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:14:19,917 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 [2024-11-19 14:14:19,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,919 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) [2024-11-19 14:14:19,920 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 [2024-11-19 14:14:19,921 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 [2024-11-19 14:14:19,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:14:19,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:14:19,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:14:19,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:14:19,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:14:19,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:14:19,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:14:19,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:14:19,942 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 14:14:19,942 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 14:14:19,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:19,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:19,970 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) [2024-11-19 14:14:19,971 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 [2024-11-19 14:14:19,972 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:14:19,972 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:14:19,972 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:14:19,973 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-19 14:14:19,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:19,992 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:14:20,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:20,021 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:14:20,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:20,033 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:14:20,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:20,060 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-19 14:14:20,062 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:20,087 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 24 transitions. Complement of second has 6 states. [2024-11-19 14:14:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:14:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2024-11-19 14:14:20,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2024-11-19 14:14:20,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:20,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-19 14:14:20,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:20,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-19 14:14:20,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:20,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2024-11-19 14:14:20,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:20,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 8 states and 11 transitions. [2024-11-19 14:14:20,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-11-19 14:14:20,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-19 14:14:20,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-11-19 14:14:20,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:14:20,100 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-19 14:14:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-11-19 14:14:20,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-19 14:14:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2024-11-19 14:14:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2024-11-19 14:14:20,119 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-19 14:14:20,119 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-19 14:14:20,119 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-19 14:14:20,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2024-11-19 14:14:20,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:20,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:14:20,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:14:20,121 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-19 14:14:20,121 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:14:20,122 INFO L745 eck$LassoCheckResult]: Stem: 65#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 66#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 67#L17-2 assume !!(0 != main_~x~0#1); 60#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 61#L17-2 [2024-11-19 14:14:20,122 INFO L747 eck$LassoCheckResult]: Loop: 61#L17-2 assume !!(0 != main_~x~0#1); 64#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 61#L17-2 [2024-11-19 14:14:20,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-11-19 14:14:20,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:20,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780971814] [2024-11-19 14:14:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:14:20,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:20,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:20,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:20,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2024-11-19 14:14:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:20,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706781473] [2024-11-19 14:14:20,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:14:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:20,144 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:14:20,144 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:14:20,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:20,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:20,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2024-11-19 14:14:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179891606] [2024-11-19 14:14:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:14:20,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:20,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:14:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179891606] [2024-11-19 14:14:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179891606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:14:20,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:14:20,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:14:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724530046] [2024-11-19 14:14:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:14:20,269 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:14:20,269 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:14:20,269 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:14:20,269 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:14:20,269 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:14:20,269 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,269 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:14:20,270 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:14:20,270 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2024-11-19 14:14:20,270 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:14:20,270 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:14:20,270 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,273 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,319 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:14:20,319 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:14:20,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:20,321 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2024-11-19 14:14:20,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-19 14:14:20,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:14:20,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:20,343 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:14:20,343 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:14:20,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:20,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:20,359 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2024-11-19 14:14:20,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-19 14:14:20,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:14:20,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:20,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:20,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:20,385 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2024-11-19 14:14:20,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-19 14:14:20,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:14:20,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:20,422 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:14:20,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-19 14:14:20,427 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:14:20,427 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:14:20,427 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:14:20,427 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:14:20,427 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:14:20,427 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,428 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:14:20,428 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:14:20,428 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2024-11-19 14:14:20,428 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:14:20,428 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:14:20,429 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,442 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,509 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:14:20,509 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:14:20,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:20,529 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2024-11-19 14:14:20,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-19 14:14:20,536 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 [2024-11-19 14:14:20,546 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:14:20,547 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:14:20,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:14:20,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:14:20,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:14:20,548 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:14:20,548 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:14:20,550 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:14:20,552 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-19 14:14:20,552 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-19 14:14:20,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:20,558 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2024-11-19 14:14:20,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-19 14:14:20,559 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:14:20,559 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:14:20,560 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:14:20,560 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-19 14:14:20,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:20,573 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:14:20,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:20,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:14:20,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:20,628 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:14:20,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:20,631 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-19 14:14:20,633 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-19 14:14:20,642 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 12 states and 17 transitions. Complement of second has 5 states. [2024-11-19 14:14:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:14:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-19 14:14:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-11-19 14:14:20,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-19 14:14:20,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:20,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-19 14:14:20,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:20,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2024-11-19 14:14:20,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:20,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2024-11-19 14:14:20,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:20,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2024-11-19 14:14:20,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-19 14:14:20,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-19 14:14:20,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2024-11-19 14:14:20,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:14:20,647 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-11-19 14:14:20,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2024-11-19 14:14:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-19 14:14:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2024-11-19 14:14:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2024-11-19 14:14:20,650 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-11-19 14:14:20,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:14:20,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:14:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:14:20,653 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-19 14:14:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 14:14:20,666 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2024-11-19 14:14:20,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2024-11-19 14:14:20,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:20,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2024-11-19 14:14:20,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-19 14:14:20,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-19 14:14:20,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2024-11-19 14:14:20,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:14:20,668 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-11-19 14:14:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2024-11-19 14:14:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2024-11-19 14:14:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2024-11-19 14:14:20,670 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-11-19 14:14:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:14:20,671 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-11-19 14:14:20,671 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-19 14:14:20,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2024-11-19 14:14:20,672 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:20,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:14:20,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:14:20,672 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-19 14:14:20,672 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:14:20,672 INFO L745 eck$LassoCheckResult]: Stem: 146#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 148#L17-2 assume !!(0 != main_~x~0#1); 143#L17 [2024-11-19 14:14:20,673 INFO L747 eck$LassoCheckResult]: Loop: 143#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 142#L17-2 assume !!(0 != main_~x~0#1); 143#L17 [2024-11-19 14:14:20,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-11-19 14:14:20,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:20,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462161057] [2024-11-19 14:14:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:14:20,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:20,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:20,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:20,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:20,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2024-11-19 14:14:20,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:20,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627165522] [2024-11-19 14:14:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:14:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:20,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:20,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:20,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:20,685 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2024-11-19 14:14:20,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:20,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999409652] [2024-11-19 14:14:20,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:14:20,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:20,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:14:20,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:14:20,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:20,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:20,712 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:14:20,712 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:14:20,712 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:14:20,712 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:14:20,713 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:14:20,713 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,713 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:14:20,713 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:14:20,713 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2024-11-19 14:14:20,713 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:14:20,713 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:14:20,714 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,720 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,723 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,761 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:14:20,761 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:14:20,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:20,763 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2024-11-19 14:14:20,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-19 14:14:20,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:14:20,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:20,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-19 14:14:20,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:20,800 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2024-11-19 14:14:20,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-19 14:14:20,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:14:20,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:20,896 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:14:20,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-19 14:14:20,902 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:14:20,902 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:14:20,902 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:14:20,902 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:14:20,902 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:14:20,902 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:20,902 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:14:20,902 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:14:20,902 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2024-11-19 14:14:20,902 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:14:20,902 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:14:20,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,914 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,923 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:20,971 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 [2024-11-19 14:14:20,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:21,007 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:14:21,007 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:14:21,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:21,013 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2024-11-19 14:14:21,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-19 14:14:21,015 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 [2024-11-19 14:14:21,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:14:21,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:14:21,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:14:21,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:14:21,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:14:21,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:14:21,027 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:14:21,029 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:14:21,032 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 14:14:21,032 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 14:14:21,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:21,033 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2024-11-19 14:14:21,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-19 14:14:21,038 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:14:21,038 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:14:21,038 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:14:21,038 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-19 14:14:21,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-19 14:14:21,051 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:14:21,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:21,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:21,074 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:21,102 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 [2024-11-19 14:14:21,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-19 14:14:21,110 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 12 states and 14 transitions. Complement of second has 5 states. [2024-11-19 14:14:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:14:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-19 14:14:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-19 14:14:21,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-19 14:14:21,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:21,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-19 14:14:21,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:21,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-19 14:14:21,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:21,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2024-11-19 14:14:21,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:21,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2024-11-19 14:14:21,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-11-19 14:14:21,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-11-19 14:14:21,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-11-19 14:14:21,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:14:21,112 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-19 14:14:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-11-19 14:14:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-11-19 14:14:21,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2024-11-19 14:14:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-11-19 14:14:21,113 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-19 14:14:21,113 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-19 14:14:21,113 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-19 14:14:21,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-11-19 14:14:21,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-19 14:14:21,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:14:21,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:14:21,113 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2024-11-19 14:14:21,114 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:14:21,114 INFO L745 eck$LassoCheckResult]: Stem: 201#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 202#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 196#L17-2 assume !!(0 != main_~x~0#1); 197#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 198#L17-2 assume !!(0 != main_~x~0#1); 199#L17 [2024-11-19 14:14:21,114 INFO L747 eck$LassoCheckResult]: Loop: 199#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 200#L17-2 assume !!(0 != main_~x~0#1); 199#L17 [2024-11-19 14:14:21,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:21,114 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2024-11-19 14:14:21,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:21,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759336588] [2024-11-19 14:14:21,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:14:21,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:21,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:14:21,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:14:21,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:21,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:21,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:21,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2024-11-19 14:14:21,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:21,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303571509] [2024-11-19 14:14:21,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:14:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:21,124 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:14:21,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:14:21,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:14:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:14:21,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:14:21,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2024-11-19 14:14:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:14:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435502827] [2024-11-19 14:14:21,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:14:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:14:21,130 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:14:21,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:14:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:14:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435502827] [2024-11-19 14:14:21,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435502827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:14:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493776128] [2024-11-19 14:14:21,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:14:21,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:14:21,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:21,155 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:14:21,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 14:14:21,177 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:14:21,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:14:21,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:21,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:14:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:21,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493776128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:14:21,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:14:21,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-19 14:14:21,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441947196] [2024-11-19 14:14:21,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:14:21,217 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:14:21,218 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:14:21,218 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:14:21,218 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:14:21,218 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:14:21,218 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,218 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:14:21,218 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:14:21,218 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2024-11-19 14:14:21,218 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:14:21,218 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:14:21,219 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:21,221 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:21,227 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:21,258 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:14:21,259 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:14:21,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:21,264 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2024-11-19 14:14:21,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-19 14:14:21,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:14:21,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:21,297 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:14:21,297 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:14:21,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-19 14:14:21,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:21,330 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2024-11-19 14:14:21,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-19 14:14:21,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:14:21,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:21,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:21,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:21,364 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2024-11-19 14:14:21,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-19 14:14:21,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:14:21,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:14:21,412 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:14:21,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-19 14:14:21,417 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:14:21,417 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:14:21,417 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:14:21,417 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:14:21,417 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:14:21,417 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,417 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:14:21,417 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:14:21,418 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2024-11-19 14:14:21,418 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:14:21,418 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:14:21,419 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:21,425 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:21,428 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:14:21,482 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:14:21,483 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:14:21,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:21,485 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2024-11-19 14:14:21,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-19 14:14:21,490 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 [2024-11-19 14:14:21,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:14:21,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:14:21,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:14:21,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:14:21,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:14:21,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:14:21,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:14:21,516 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:14:21,520 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 14:14:21,520 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 14:14:21,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:14:21,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:14:21,521 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2024-11-19 14:14:21,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-19 14:14:21,523 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:14:21,523 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:14:21,523 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:14:21,523 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-19 14:14:21,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:21,534 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:14:21,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:21,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:21,553 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:21,565 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 [2024-11-19 14:14:21,565 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:21,568 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2024-11-19 14:14:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-19 14:14:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-11-19 14:14:21,569 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-19 14:14:21,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:21,569 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 14:14:21,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:21,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:21,586 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:21,597 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:14:21,597 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:21,604 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2024-11-19 14:14:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-19 14:14:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:21,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-11-19 14:14:21,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-19 14:14:21,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:21,605 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 14:14:21,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:14:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:21,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:14:21,633 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:14:21,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:14:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:14:21,651 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:14:21,651 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:21,661 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 10 transitions. Complement of second has 4 states. [2024-11-19 14:14:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:14:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-19 14:14:21,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-19 14:14:21,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:21,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2024-11-19 14:14:21,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:21,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2024-11-19 14:14:21,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:14:21,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-11-19 14:14:21,666 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 14:14:21,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2024-11-19 14:14:21,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-19 14:14:21,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-19 14:14:21,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-19 14:14:21,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-19 14:14:21,667 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 14:14:21,667 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 14:14:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:14:21,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:14:21,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:14:21,667 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:14:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 14:14:21,667 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-19 14:14:21,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-19 14:14:21,667 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 14:14:21,667 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 14:14:21,667 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-19 14:14:21,667 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-19 14:14:21,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-19 14:14:21,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-19 14:14:21,668 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 14:14:21,668 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 14:14:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 14:14:21,668 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 14:14:21,668 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-19 14:14:21,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-19 14:14:21,668 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 14:14:21,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-19 14:14:21,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 02:14:21 BoogieIcfgContainer [2024-11-19 14:14:21,682 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-19 14:14:21,682 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:14:21,682 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:14:21,682 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:14:21,683 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:14:19" (3/4) ... [2024-11-19 14:14:21,684 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-19 14:14:21,685 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:14:21,689 INFO L158 Benchmark]: Toolchain (without parser) took 2957.67ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 89.5MB in the end (delta: 11.2MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2024-11-19 14:14:21,690 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:14:21,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.17ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 89.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-19 14:14:21,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.28ms. Allocated memory is still 167.8MB. Free memory was 89.3MB in the beginning and 88.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:14:21,690 INFO L158 Benchmark]: Boogie Preprocessor took 25.46ms. Allocated memory is still 167.8MB. Free memory was 88.1MB in the beginning and 86.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:14:21,691 INFO L158 Benchmark]: RCFGBuilder took 243.06ms. Allocated memory is still 167.8MB. Free memory was 86.6MB in the beginning and 133.6MB in the end (delta: -47.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2024-11-19 14:14:21,691 INFO L158 Benchmark]: BuchiAutomizer took 2459.00ms. Allocated memory is still 167.8MB. Free memory was 133.6MB in the beginning and 89.5MB in the end (delta: 44.1MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2024-11-19 14:14:21,691 INFO L158 Benchmark]: Witness Printer took 6.81ms. Allocated memory is still 167.8MB. Free memory is still 89.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:14:21,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 125.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.17ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 89.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.28ms. Allocated memory is still 167.8MB. Free memory was 89.3MB in the beginning and 88.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.46ms. Allocated memory is still 167.8MB. Free memory was 88.1MB in the beginning and 86.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 243.06ms. Allocated memory is still 167.8MB. Free memory was 86.6MB in the beginning and 133.6MB in the end (delta: -47.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 2459.00ms. Allocated memory is still 167.8MB. Free memory was 133.6MB in the beginning and 89.5MB in the end (delta: 44.1MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. * Witness Printer took 6.81ms. Allocated memory is still 167.8MB. Free memory is still 89.5MB. 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function ((long) -1 * x) and consists of 4 locations. One deterministic module has affine ranking function ((long) -1 * x) and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 26 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq171 hnf95 smp65 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-19 14:14:21,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-19 14:14:21,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 14:14:22,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-19 14:14:22,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE