./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:13:17,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:13:18,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-12 00:13:18,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:13:18,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:13:18,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:13:18,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:13:18,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:13:18,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:13:18,105 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:13:18,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:13:18,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:13:18,106 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:13:18,106 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-12 00:13:18,107 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-12 00:13:18,108 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-12 00:13:18,109 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-12 00:13:18,109 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-12 00:13:18,109 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-12 00:13:18,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:13:18,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-12 00:13:18,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:13:18,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:13:18,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-12 00:13:18,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-12 00:13:18,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-12 00:13:18,115 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:13:18,115 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:13:18,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:13:18,116 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-12 00:13:18,116 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:13:18,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:13:18,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:13:18,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:13:18,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:13:18,118 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-12 00:13:18,118 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 [2024-10-12 00:13:18,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:13:18,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:13:18,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:13:18,415 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:13:18,415 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:13:18,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-10-12 00:13:19,894 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:13:20,110 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:13:20,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-10-12 00:13:20,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9bfde7a9a/6f086a3aaf64423d90cbcb15695b8be2/FLAG327622c58 [2024-10-12 00:13:20,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9bfde7a9a/6f086a3aaf64423d90cbcb15695b8be2 [2024-10-12 00:13:20,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:13:20,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:13:20,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:13:20,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:13:20,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:13:20,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7696519f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20, skipping insertion in model container [2024-10-12 00:13:20,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:13:20,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:13:20,332 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:13:20,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:13:20,360 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:13:20,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20 WrapperNode [2024-10-12 00:13:20,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:13:20,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:13:20,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:13:20,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:13:20,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,388 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-10-12 00:13:20,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:13:20,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:13:20,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:13:20,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:13:20,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,404 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,410 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-12 00:13:20,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:13:20,420 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:13:20,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:13:20,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:13:20,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (1/1) ... [2024-10-12 00:13:20,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:20,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:20,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:20,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-12 00:13:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:13:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:13:20,558 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:13:20,560 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:13:20,605 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-12 00:13:20,606 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:13:20,617 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:13:20,618 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 00:13:20,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:13:20 BoogieIcfgContainer [2024-10-12 00:13:20,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:13:20,621 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-12 00:13:20,625 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-12 00:13:20,629 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-12 00:13:20,630 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:13:20,630 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 12:13:20" (1/3) ... [2024-10-12 00:13:20,631 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14d99c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:13:20, skipping insertion in model container [2024-10-12 00:13:20,631 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:13:20,631 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:20" (2/3) ... [2024-10-12 00:13:20,631 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14d99c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:13:20, skipping insertion in model container [2024-10-12 00:13:20,631 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:13:20,631 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:13:20" (3/3) ... [2024-10-12 00:13:20,633 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-10-12 00:13:20,688 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-12 00:13:20,689 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-12 00:13:20,689 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-12 00:13:20,689 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-12 00:13:20,689 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-12 00:13:20,689 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-12 00:13:20,689 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-12 00:13:20,690 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-12 00:13:20,694 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) [2024-10-12 00:13:20,707 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:20,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:20,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:20,712 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-12 00:13:20,712 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-12 00:13:20,712 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-12 00:13:20,713 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) [2024-10-12 00:13:20,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:20,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:20,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:20,714 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-12 00:13:20,714 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-12 00:13:20,721 INFO L745 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L18-2true [2024-10-12 00:13:20,722 INFO L747 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 != main_~K~0#1); 3#L18true assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 6#L18-2true [2024-10-12 00:13:20,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:20,728 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-12 00:13:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:20,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843199795] [2024-10-12 00:13:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:20,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:20,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:20,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:20,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:20,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2024-10-12 00:13:20,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:20,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576612235] [2024-10-12 00:13:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:20,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:20,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:20,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:20,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:20,836 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2024-10-12 00:13:20,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:20,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002879738] [2024-10-12 00:13:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:20,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:20,848 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:20,918 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:20,919 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:20,919 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:20,919 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:20,920 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:13:20,920 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:20,920 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:20,920 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:20,920 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2024-10-12 00:13:20,920 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:20,921 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:20,936 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:20,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:20,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:21,049 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:21,051 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:13:21,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:21,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:21,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-12 00:13:21,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:21,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:21,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-12 00:13:21,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:21,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:21,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:21,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-12 00:13:21,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:21,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:21,202 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:13:21,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:21,208 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:21,208 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:21,209 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:21,209 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:21,209 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:13:21,209 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:21,209 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:21,209 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:21,209 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2024-10-12 00:13:21,209 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:21,209 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:21,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:21,227 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:21,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:21,307 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:21,312 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:13:21,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:21,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:21,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:21,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-12 00:13:21,318 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 [2024-10-12 00:13:21,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:21,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:21,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:21,334 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:21,334 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:21,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:21,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:21,342 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:13:21,348 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:13:21,349 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:13:21,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:21,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:21,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:21,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-12 00:13:21,413 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:13:21,413 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:13:21,413 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:13:21,414 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2024-10-12 00:13:21,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-12 00:13:21,431 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:13:21,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:21,476 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:21,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:21,494 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:13:21,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:21,558 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 [2024-10-12 00:13:21,562 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) [2024-10-12 00:13:21,613 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. [2024-10-12 00:13:21,616 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 [2024-10-12 00:13:21,624 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) [2024-10-12 00:13:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2024-10-12 00:13:21,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2024-10-12 00:13:21,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:21,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-12 00:13:21,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:21,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2024-10-12 00:13:21,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:21,629 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2024-10-12 00:13:21,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:21,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 8 states and 11 transitions. [2024-10-12 00:13:21,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-10-12 00:13:21,638 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-10-12 00:13:21,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-10-12 00:13:21,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:13:21,639 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-12 00:13:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-10-12 00:13:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-10-12 00:13:21,663 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) [2024-10-12 00:13:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2024-10-12 00:13:21,664 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-12 00:13:21,664 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-12 00:13:21,665 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-12 00:13:21,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2024-10-12 00:13:21,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:21,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:21,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:21,666 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-12 00:13:21,666 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-12 00:13:21,667 INFO L745 eck$LassoCheckResult]: Stem: 66#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 67#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 68#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 61#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 62#L18-2 [2024-10-12 00:13:21,667 INFO L747 eck$LassoCheckResult]: Loop: 62#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 65#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 62#L18-2 [2024-10-12 00:13:21,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:21,668 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-10-12 00:13:21,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:21,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608825117] [2024-10-12 00:13:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:21,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:21,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:21,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:21,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2024-10-12 00:13:21,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:21,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131825435] [2024-10-12 00:13:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:21,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:21,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:21,690 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:21,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:21,691 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2024-10-12 00:13:21,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:21,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932664703] [2024-10-12 00:13:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:21,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:21,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-12 00:13:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:21,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:13:21,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932664703] [2024-10-12 00:13:21,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932664703] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:13:21,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:13:21,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:13:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996989329] [2024-10-12 00:13:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:13:21,911 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:21,911 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:21,911 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:21,911 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:21,911 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:13:21,912 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:21,912 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:21,912 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:21,912 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2024-10-12 00:13:21,912 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:21,912 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:21,913 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:21,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:21,924 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:21,975 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:21,975 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:13:21,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:21,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:21,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:21,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-12 00:13:21,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:21,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,003 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:22,004 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: [] [2024-10-12 00:13:22,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,020 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-12 00:13:22,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:22,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,040 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:22,041 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:13:22,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,053 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-12 00:13:22,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:22,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-12 00:13:22,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:22,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,220 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:13:22,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,226 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:22,226 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:22,226 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:22,226 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:22,226 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:13:22,226 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,226 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:22,226 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:22,226 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2024-10-12 00:13:22,226 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:22,227 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:22,228 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,293 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:22,293 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:13:22,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,300 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-12 00:13:22,302 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 [2024-10-12 00:13:22,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:22,315 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:22,315 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:22,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:22,317 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-12 00:13:22,317 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-12 00:13:22,321 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:13:22,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,339 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-12 00:13:22,342 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 [2024-10-12 00:13:22,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:22,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:22,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:22,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:22,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:22,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:22,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:22,358 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:13:22,362 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-10-12 00:13:22,362 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:13:22,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,364 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-12 00:13:22,366 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:13:22,366 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:13:22,366 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:13:22,366 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0#1, ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~K~0#1 - 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-10-12 00:13:22,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-12 00:13:22,383 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:13:22,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:22,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:22,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:22,418 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:13:22,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:22,441 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 [2024-10-12 00:13:22,441 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) [2024-10-12 00:13:22,467 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. [2024-10-12 00:13:22,468 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 [2024-10-12 00:13:22,469 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) [2024-10-12 00:13:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-10-12 00:13:22,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-12 00:13:22,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:22,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-10-12 00:13:22,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:22,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2024-10-12 00:13:22,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:22,471 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2024-10-12 00:13:22,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:22,472 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2024-10-12 00:13:22,472 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-12 00:13:22,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-12 00:13:22,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2024-10-12 00:13:22,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:13:22,474 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-10-12 00:13:22,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2024-10-12 00:13:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-12 00:13:22,476 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) [2024-10-12 00:13:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2024-10-12 00:13:22,476 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-10-12 00:13:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:13:22,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:13:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:13:22,481 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) [2024-10-12 00:13:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:13:22,499 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2024-10-12 00:13:22,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2024-10-12 00:13:22,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:22,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2024-10-12 00:13:22,501 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-10-12 00:13:22,501 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-12 00:13:22,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2024-10-12 00:13:22,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:13:22,502 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-12 00:13:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2024-10-12 00:13:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2024-10-12 00:13:22,503 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) [2024-10-12 00:13:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2024-10-12 00:13:22,504 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-10-12 00:13:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:13:22,505 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-10-12 00:13:22,505 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-12 00:13:22,505 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2024-10-12 00:13:22,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:22,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:22,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:22,506 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 00:13:22,506 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-12 00:13:22,506 INFO L745 eck$LassoCheckResult]: Stem: 148#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 149#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 150#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 144#L18 [2024-10-12 00:13:22,506 INFO L747 eck$LassoCheckResult]: Loop: 144#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 145#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 144#L18 [2024-10-12 00:13:22,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-10-12 00:13:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:22,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065300797] [2024-10-12 00:13:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:22,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:22,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2024-10-12 00:13:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:22,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638036615] [2024-10-12 00:13:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:22,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:22,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,534 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:22,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2024-10-12 00:13:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:22,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852315885] [2024-10-12 00:13:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:22,564 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:22,565 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:22,565 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:22,565 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:22,565 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:13:22,565 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,565 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:22,565 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:22,566 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2024-10-12 00:13:22,566 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:22,566 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:22,567 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,570 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,578 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,619 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:22,620 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:13:22,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,622 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-12 00:13:22,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:22,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,647 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:22,647 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:13:22,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-12 00:13:22,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,664 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-12 00:13:22,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:22,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-12 00:13:22,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,702 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-12 00:13:22,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:22,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,914 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:13:22,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,919 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:22,919 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:22,919 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:22,919 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:22,919 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:13:22,919 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,919 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:22,919 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:22,920 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2024-10-12 00:13:22,920 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:22,920 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:22,921 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,930 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,933 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,981 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:22,981 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:13:22,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,983 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-12 00:13:22,985 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 [2024-10-12 00:13:22,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:22,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:22,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:22,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:22,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:22,997 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:22,997 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:23,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:13:23,004 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-10-12 00:13:23,004 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:13:23,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,006 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-12 00:13:23,009 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:13:23,009 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:13:23,009 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:13:23,009 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2024-10-12 00:13:23,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:23,023 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:13:23,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,052 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,086 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 [2024-10-12 00:13:23,086 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) [2024-10-12 00:13:23,096 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. [2024-10-12 00:13:23,096 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 [2024-10-12 00:13:23,097 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) [2024-10-12 00:13:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-10-12 00:13:23,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2024-10-12 00:13:23,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-12 00:13:23,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-12 00:13:23,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2024-10-12 00:13:23,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:23,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2024-10-12 00:13:23,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-10-12 00:13:23,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-10-12 00:13:23,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-10-12 00:13:23,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:13:23,100 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-10-12 00:13:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-10-12 00:13:23,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-10-12 00:13:23,101 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) [2024-10-12 00:13:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-10-12 00:13:23,101 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-12 00:13:23,101 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-12 00:13:23,101 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-12 00:13:23,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-10-12 00:13:23,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-12 00:13:23,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:23,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:23,103 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2024-10-12 00:13:23,103 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-12 00:13:23,103 INFO L745 eck$LassoCheckResult]: Stem: 203#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 204#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 202#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 200#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 201#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 198#L18 [2024-10-12 00:13:23,103 INFO L747 eck$LassoCheckResult]: Loop: 198#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 199#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 198#L18 [2024-10-12 00:13:23,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2024-10-12 00:13:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:23,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589119104] [2024-10-12 00:13:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:23,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:23,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:23,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:23,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2024-10-12 00:13:23,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:23,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359295248] [2024-10-12 00:13:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:23,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:23,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:23,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:23,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2024-10-12 00:13:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:23,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229989629] [2024-10-12 00:13:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:23,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:13:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229989629] [2024-10-12 00:13:23,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229989629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:13:23,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:13:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:13:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3737020] [2024-10-12 00:13:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:13:23,216 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:23,216 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:23,216 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:23,216 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:23,216 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:13:23,216 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,216 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:23,216 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:23,216 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2024-10-12 00:13:23,216 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:23,217 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:23,217 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,229 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,277 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:23,277 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:13:23,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,279 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-12 00:13:23,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:23,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:23,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-12 00:13:23,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,321 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-12 00:13:23,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:23,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:23,528 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:13:23,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-12 00:13:23,534 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:23,534 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:23,534 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:23,534 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:23,534 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:13:23,534 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,534 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:23,534 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:23,534 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2024-10-12 00:13:23,534 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:23,534 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:23,536 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,547 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,597 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:23,598 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:13:23,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,600 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-12 00:13:23,603 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 [2024-10-12 00:13:23,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:23,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:23,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:23,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:23,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:23,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:23,620 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:23,623 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:13:23,628 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:13:23,628 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:13:23,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,630 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-12 00:13:23,632 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:13:23,632 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:13:23,632 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:13:23,633 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~K~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-10-12 00:13:23,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-12 00:13:23,649 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:13:23,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,685 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,708 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 [2024-10-12 00:13:23,708 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) [2024-10-12 00:13:23,715 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. [2024-10-12 00:13:23,716 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 [2024-10-12 00:13:23,717 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) [2024-10-12 00:13:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-10-12 00:13:23,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-12 00:13:23,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,718 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:13:23,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,750 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,770 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 [2024-10-12 00:13:23,770 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) [2024-10-12 00:13:23,776 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. [2024-10-12 00:13:23,777 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 [2024-10-12 00:13:23,778 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) [2024-10-12 00:13:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-10-12 00:13:23,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-12 00:13:23,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,778 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:13:23,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,807 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,832 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 [2024-10-12 00:13:23,832 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) [2024-10-12 00:13:23,839 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. [2024-10-12 00:13:23,840 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 [2024-10-12 00:13:23,840 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) [2024-10-12 00:13:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-10-12 00:13:23,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-12 00:13:23,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2024-10-12 00:13:23,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2024-10-12 00:13:23,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-10-12 00:13:23,842 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:13:23,842 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2024-10-12 00:13:23,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 00:13:23,843 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 00:13:23,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 00:13:23,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 00:13:23,843 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:13:23,843 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:13:23,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:13:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:13:23,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:13:23,844 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2024-10-12 00:13:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:13:23,844 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-10-12 00:13:23,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-10-12 00:13:23,844 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:13:23,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 00:13:23,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 00:13:23,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 00:13:23,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 00:13:23,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 00:13:23,844 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:13:23,844 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:13:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 00:13:23,845 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:13:23,845 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-12 00:13:23,845 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-12 00:13:23,845 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:13:23,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-12 00:13:23,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 12:13:23 BoogieIcfgContainer [2024-10-12 00:13:23,854 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-12 00:13:23,855 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 00:13:23,855 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 00:13:23,855 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 00:13:23,855 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:13:20" (3/4) ... [2024-10-12 00:13:23,857 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 00:13:23,858 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 00:13:23,858 INFO L158 Benchmark]: Toolchain (without parser) took 3726.54ms. Allocated memory is still 207.6MB. Free memory was 177.0MB in the beginning and 85.6MB in the end (delta: 91.4MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2024-10-12 00:13:23,859 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 130.0MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:13:23,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.07ms. Allocated memory is still 207.6MB. Free memory was 176.8MB in the beginning and 168.6MB in the end (delta: 8.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-10-12 00:13:23,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.37ms. Allocated memory is still 207.6MB. Free memory was 168.6MB in the beginning and 167.7MB in the end (delta: 867.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:13:23,860 INFO L158 Benchmark]: Boogie Preprocessor took 28.52ms. Allocated memory is still 207.6MB. Free memory was 167.7MB in the beginning and 165.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:13:23,860 INFO L158 Benchmark]: RCFGBuilder took 200.96ms. Allocated memory is still 207.6MB. Free memory was 165.7MB in the beginning and 157.2MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-12 00:13:23,860 INFO L158 Benchmark]: BuchiAutomizer took 3232.85ms. Allocated memory is still 207.6MB. Free memory was 157.2MB in the beginning and 85.6MB in the end (delta: 71.6MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2024-10-12 00:13:23,860 INFO L158 Benchmark]: Witness Printer took 2.82ms. Allocated memory is still 207.6MB. Free memory is still 85.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:13:23,862 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 130.0MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.07ms. Allocated memory is still 207.6MB. Free memory was 176.8MB in the beginning and 168.6MB in the end (delta: 8.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.37ms. Allocated memory is still 207.6MB. Free memory was 168.6MB in the beginning and 167.7MB in the end (delta: 867.7kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.52ms. Allocated memory is still 207.6MB. Free memory was 167.7MB in the beginning and 165.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 200.96ms. Allocated memory is still 207.6MB. Free memory was 165.7MB in the beginning and 157.2MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3232.85ms. Allocated memory is still 207.6MB. Free memory was 157.2MB in the beginning and 85.6MB in the end (delta: 71.6MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. * Witness Printer took 2.82ms. Allocated memory is still 207.6MB. Free memory is still 85.6MB. 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 (K + ((long) -1 * x)) and consists of 4 locations. One deterministic module has affine ranking function (K + ((long) -1 * x)) and consists of 3 locations. One deterministic module has affine ranking function (x + ((long) -1 * K)) and consists of 3 locations. One nondeterministic module has affine ranking function (x + ((long) -1 * K)) 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 3.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. 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, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 26 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf95 smp62 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-12 00:13:23,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:24,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-12 00:13:24,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:24,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE