./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:33:12,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:33:12,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-10 22:33:12,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:33:12,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:33:12,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-10 22:33:12,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:33:12,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:33:12,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:33:12,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:33:12,118 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:33:12,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:33:12,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:33:12,119 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:33:12,119 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-10 22:33:12,120 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-10 22:33:12,120 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-10 22:33:12,120 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-10 22:33:12,120 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-10 22:33:12,120 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-10 22:33:12,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:33:12,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-10 22:33:12,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:33:12,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:33:12,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-10 22:33:12,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-10 22:33:12,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-10 22:33:12,123 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:33:12,123 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:33:12,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:33:12,123 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-10 22:33:12,124 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:33:12,124 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:33:12,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:33:12,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:33:12,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:33:12,124 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-10 22:33:12,125 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 [2024-11-10 22:33:12,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:33:12,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:33:12,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:33:12,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:33:12,358 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:33:12,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-11-10 22:33:13,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:33:13,651 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:33:13,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-11-10 22:33:13,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1c5a399/2058e0a4ceaa40b7a6b1a3755636d64a/FLAGd6703d842 [2024-11-10 22:33:14,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1c5a399/2058e0a4ceaa40b7a6b1a3755636d64a [2024-11-10 22:33:14,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:33:14,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:33:14,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:33:14,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:33:14,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:33:14,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f60d595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14, skipping insertion in model container [2024-11-10 22:33:14,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:33:14,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:33:14,219 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:33:14,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:33:14,237 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:33:14,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14 WrapperNode [2024-11-10 22:33:14,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:33:14,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:33:14,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:33:14,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:33:14,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,254 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-11-10 22:33:14,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:33:14,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:33:14,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:33:14,255 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:33:14,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,266 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-10 22:33:14,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,267 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:33:14,269 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:33:14,269 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:33:14,269 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:33:14,270 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (1/1) ... [2024-11-10 22:33:14,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:14,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:14,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:14,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-10 22:33:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:33:14,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:33:14,396 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:33:14,397 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:33:14,438 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-10 22:33:14,438 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:33:14,447 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:33:14,447 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:33:14,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:14 BoogieIcfgContainer [2024-11-10 22:33:14,447 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:33:14,448 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-10 22:33:14,452 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-10 22:33:14,455 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-10 22:33:14,456 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:33:14,457 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 10:33:14" (1/3) ... [2024-11-10 22:33:14,458 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@379137a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 10:33:14, skipping insertion in model container [2024-11-10 22:33:14,458 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:33:14,458 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:14" (2/3) ... [2024-11-10 22:33:14,459 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@379137a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 10:33:14, skipping insertion in model container [2024-11-10 22:33:14,459 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:33:14,459 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:14" (3/3) ... [2024-11-10 22:33:14,460 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-11-10 22:33:14,504 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-10 22:33:14,504 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-10 22:33:14,505 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-10 22:33:14,505 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-10 22:33:14,505 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-10 22:33:14,505 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-10 22:33:14,506 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-10 22:33:14,506 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-10 22:33:14,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:14,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:14,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:14,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:14,526 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-10 22:33:14,526 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:14,526 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-10 22:33:14,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:14,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:14,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:14,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:14,529 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-10 22:33:14,529 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:14,535 INFO L745 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#ULTIMATE.init_returnLabel#1true assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#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; 3#L17true [2024-11-10 22:33:14,536 INFO L747 eck$LassoCheckResult]: Loop: 3#L17true assume true; 7#L17-1true assume !!(main_~x~0#1 != main_~K~0#1); 4#L18true assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 3#L17true [2024-11-10 22:33:14,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:14,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1280, now seen corresponding path program 1 times [2024-11-10 22:33:14,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:14,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392926038] [2024-11-10 22:33:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:14,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:14,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:14,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:14,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash 36707, now seen corresponding path program 1 times [2024-11-10 22:33:14,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:14,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694424771] [2024-11-10 22:33:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:14,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:14,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:14,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:14,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:14,655 INFO L85 PathProgramCache]: Analyzing trace with hash 38139396, now seen corresponding path program 1 times [2024-11-10 22:33:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620144129] [2024-11-10 22:33:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:14,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:14,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:14,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:14,740 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:14,740 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:14,740 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:14,741 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:14,741 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:33:14,741 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:14,741 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:14,741 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:14,741 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2024-11-10 22:33:14,741 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:14,741 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:14,752 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:14,765 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:14,768 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:14,808 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:14,808 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:33:14,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:14,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:14,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-10 22:33:14,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:14,813 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:14,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-10 22:33:14,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:14,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:14,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:14,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-10 22:33:14,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:33:14,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:14,972 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:33:14,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:14,978 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:14,978 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:14,978 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:14,978 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:14,978 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:33:14,978 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:14,978 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:14,979 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:14,979 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2024-11-10 22:33:14,979 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:14,979 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:14,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:14,987 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:14,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,029 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:15,032 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:33:15,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-10 22:33:15,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:33:15,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:15,052 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:33:15,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:15,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:15,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:15,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:33:15,055 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:33:15,058 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:33:15,064 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-10 22:33:15,065 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-10 22:33:15,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-10 22:33:15,093 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:33:15,094 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:33:15,094 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:33:15,095 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 [] [2024-11-10 22:33:15,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-10 22:33:15,113 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:33:15,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,147 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:15,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,158 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:15,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:15,194 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-10 22:33:15,196 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,228 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 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 19 states and 25 transitions. Complement of second has 6 states. [2024-11-10 22:33:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-10 22:33:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-11-10 22:33:15,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 3 letters. [2024-11-10 22:33:15,239 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2024-11-10 22:33:15,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 2 letters. Loop has 6 letters. [2024-11-10 22:33:15,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2024-11-10 22:33:15,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,248 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 14 transitions. [2024-11-10 22:33:15,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-10 22:33:15,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-10 22:33:15,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2024-11-10 22:33:15,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:33:15,250 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-10 22:33:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2024-11-10 22:33:15,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-10 22:33:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-11-10 22:33:15,269 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-10 22:33:15,269 INFO L425 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-10 22:33:15,269 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-10 22:33:15,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2024-11-10 22:33:15,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:15,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:15,271 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-10 22:33:15,271 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:15,271 INFO L745 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 74#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#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; 75#L17 assume true; 72#L17-1 assume !!(main_~x~0#1 != main_~K~0#1); 66#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 67#L17 [2024-11-10 22:33:15,271 INFO L747 eck$LassoCheckResult]: Loop: 67#L17 assume true; 70#L17-1 assume !!(main_~x~0#1 != main_~K~0#1); 76#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 67#L17 [2024-11-10 22:33:15,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash 38139397, now seen corresponding path program 1 times [2024-11-10 22:33:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074126387] [2024-11-10 22:33:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:15,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash 36707, now seen corresponding path program 2 times [2024-11-10 22:33:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933853883] [2024-11-10 22:33:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:15,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1955550497, now seen corresponding path program 1 times [2024-11-10 22:33:15,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593918883] [2024-11-10 22:33:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:15,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:33:15,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593918883] [2024-11-10 22:33:15,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593918883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:33:15,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995269680] [2024-11-10 22:33:15,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:33:15,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,377 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:33:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:15,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:15,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:33:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995269680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:33:15,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:33:15,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-10 22:33:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847409246] [2024-11-10 22:33:15,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:33:15,475 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:15,475 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:15,475 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:15,475 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:15,475 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:33:15,475 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,475 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:15,475 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:15,476 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2024-11-10 22:33:15,476 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:15,476 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:15,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,479 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,481 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:15,538 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:15,538 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:33:15,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,539 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-10 22:33:15,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:15,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:15,574 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:15,574 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-10 22:33:15,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-10 22:33:15,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,586 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-10 22:33:15,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:15,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:15,609 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:15,609 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: [] [2024-11-10 22:33:15,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:15,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-10 22:33:15,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:15,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:15,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-10 22:33:15,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,647 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-10 22:33:15,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:33:15,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:15,778 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:33:15,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-10 22:33:15,783 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:15,783 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:15,783 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:15,783 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:15,783 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:33:15,783 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,783 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:15,783 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:15,783 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2024-11-10 22:33:15,783 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:15,783 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:15,785 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,788 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,791 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:15,821 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:15,821 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:33:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,823 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-10 22:33:15,825 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:33:15,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:15,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:15,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:15,836 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:15,839 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:33:15,839 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:33:15,842 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:33:15,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:15,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,855 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-10 22:33:15,857 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:33:15,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:15,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:15,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:15,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:15,870 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:33:15,870 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:33:15,875 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:33:15,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-10 22:33:15,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-10 22:33:15,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:33:15,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:15,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:33:15,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:15,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:15,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:15,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:33:15,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:33:15,903 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:33:15,906 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-11-10 22:33:15,906 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 22:33:15,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:15,907 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:15,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-10 22:33:15,909 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:33:15,909 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:33:15,909 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:33:15,909 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 [] [2024-11-10 22:33:15,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:15,920 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:33:15,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:15,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:15,942 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:33:15,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:15,947 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-11-10 22:33:15,947 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,956 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Result 17 states and 22 transitions. Complement of second has 5 states. [2024-11-10 22:33:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-10 22:33:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-10 22:33:15,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2024-11-10 22:33:15,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2024-11-10 22:33:15,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2024-11-10 22:33:15,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:15,958 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2024-11-10 22:33:15,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2024-11-10 22:33:15,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-11-10 22:33:15,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-10 22:33:15,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2024-11-10 22:33:15,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:33:15,960 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-10 22:33:15,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2024-11-10 22:33:15,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-10 22:33:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-10 22:33:15,961 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-10 22:33:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:33:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:33:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:33:15,964 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:33:15,980 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-11-10 22:33:15,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2024-11-10 22:33:15,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 16 transitions. [2024-11-10 22:33:15,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-11-10 22:33:15,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-10 22:33:15,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2024-11-10 22:33:15,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:33:15,982 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-10 22:33:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2024-11-10 22:33:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 9. [2024-11-10 22:33:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2024-11-10 22:33:15,983 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-11-10 22:33:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:33:15,985 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-11-10 22:33:15,985 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-10 22:33:15,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2024-11-10 22:33:15,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:15,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:15,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:15,986 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-10 22:33:15,986 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:15,986 INFO L745 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 223#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#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; 224#L17 assume true; 217#L17-1 [2024-11-10 22:33:15,986 INFO L747 eck$LassoCheckResult]: Loop: 217#L17-1 assume !!(main_~x~0#1 != main_~K~0#1); 220#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 216#L17 assume true; 217#L17-1 [2024-11-10 22:33:15,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash 39687, now seen corresponding path program 1 times [2024-11-10 22:33:15,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904061233] [2024-11-10 22:33:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,989 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:15,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:15,992 INFO L85 PathProgramCache]: Analyzing trace with hash 35688, now seen corresponding path program 1 times [2024-11-10 22:33:15,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:15,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462299530] [2024-11-10 22:33:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:15,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:15,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:16,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1182321314, now seen corresponding path program 2 times [2024-11-10 22:33:16,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:16,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849515144] [2024-11-10 22:33:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:16,026 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:16,026 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:16,026 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:16,026 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:16,026 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:33:16,026 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,026 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:16,026 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:16,027 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2024-11-10 22:33:16,027 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:16,027 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:16,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,072 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:16,073 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:33:16,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,075 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-10 22:33:16,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:16,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,094 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:33:16,095 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: [] [2024-11-10 22:33:16,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-10 22:33:16,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,107 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-10 22:33:16,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:16,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:16,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,134 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-10 22:33:16,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:33:16,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,241 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:33:16,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:16,246 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:16,246 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:16,246 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:16,246 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:16,246 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:33:16,246 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,246 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:16,246 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:16,246 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2024-11-10 22:33:16,246 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:16,246 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:16,247 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,305 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:16,307 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:33:16,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,308 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-10 22:33:16,310 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:33:16,320 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:16,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:16,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:16,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:16,323 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:33:16,323 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:33:16,326 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:33:16,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:16,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,337 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-10 22:33:16,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:33:16,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:16,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:33:16,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:16,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:16,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:16,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:33:16,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:33:16,352 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:33:16,356 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-11-10 22:33:16,356 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 22:33:16,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,357 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-10 22:33:16,359 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:33:16,359 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:33:16,359 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:33:16,360 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 [] [2024-11-10 22:33:16,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-10 22:33:16,370 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:33:16,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,391 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,428 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-10 22:33:16,429 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,444 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.5) 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) Result 19 states and 21 transitions. Complement of second has 7 states. [2024-11-10 22:33:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-10 22:33:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2024-11-10 22:33:16,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2024-11-10 22:33:16,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-10 22:33:16,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2024-11-10 22:33:16,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2024-11-10 22:33:16,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:16,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 12 transitions. [2024-11-10 22:33:16,448 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-11-10 22:33:16,448 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-10 22:33:16,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2024-11-10 22:33:16,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:33:16,448 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-10 22:33:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2024-11-10 22:33:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2024-11-10 22:33:16,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-10 22:33:16,449 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-10 22:33:16,449 INFO L425 stractBuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-10 22:33:16,449 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-10 22:33:16,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2024-11-10 22:33:16,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-10 22:33:16,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:33:16,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:33:16,449 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2024-11-10 22:33:16,449 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:33:16,450 INFO L745 eck$LassoCheckResult]: Stem: 293#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 294#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#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; 286#L17 assume true; 287#L17-1 assume !!(main_~x~0#1 != main_~K~0#1); 292#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 288#L17 assume true; 289#L17-1 [2024-11-10 22:33:16,450 INFO L747 eck$LassoCheckResult]: Loop: 289#L17-1 assume !!(main_~x~0#1 != main_~K~0#1); 290#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 291#L17 assume true; 289#L17-1 [2024-11-10 22:33:16,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1182321283, now seen corresponding path program 2 times [2024-11-10 22:33:16,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:16,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604334278] [2024-11-10 22:33:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,453 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:16,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,455 INFO L85 PathProgramCache]: Analyzing trace with hash 35688, now seen corresponding path program 2 times [2024-11-10 22:33:16,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:16,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876248551] [2024-11-10 22:33:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:33:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:33:16,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:33:16,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash -493446746, now seen corresponding path program 2 times [2024-11-10 22:33:16,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:33:16,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357483687] [2024-11-10 22:33:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:33:16,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:33:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:33:16,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357483687] [2024-11-10 22:33:16,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357483687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:33:16,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:33:16,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:33:16,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787586786] [2024-11-10 22:33:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:33:16,542 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:16,542 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:16,542 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:16,543 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:16,543 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:33:16,543 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,543 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:16,543 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:16,543 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2024-11-10 22:33:16,543 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:16,543 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:16,544 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,552 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,584 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:16,584 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:33:16,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,585 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-10 22:33:16,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:33:16,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-10 22:33:16,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,614 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-10 22:33:16,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:33:16,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:33:16,722 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:33:16,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:16,727 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:33:16,727 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:33:16,727 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:33:16,727 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:33:16,727 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:33:16,727 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,727 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:33:16,727 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:33:16,727 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2024-11-10 22:33:16,727 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:33:16,727 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:33:16,728 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,736 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:33:16,781 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:33:16,781 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:33:16,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,783 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-10 22:33:16,786 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:33:16,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:33:16,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:33:16,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:33:16,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:33:16,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:33:16,797 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:33:16,797 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:33:16,799 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:33:16,801 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-10 22:33:16,801 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-10 22:33:16,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:33:16,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:33:16,803 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:33:16,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-10 22:33:16,805 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:33:16,805 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:33:16,805 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:33:16,805 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 [] [2024-11-10 22:33:16,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:16,820 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:33:16,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,847 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,873 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-10 22:33:16,874 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,883 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 12 states and 13 transitions. Complement of second has 5 states. [2024-11-10 22:33:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-10 22:33:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2024-11-10 22:33:16,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-10 22:33:16,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,884 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-10 22:33:16,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,908 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:16,934 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-10 22:33:16,934 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,945 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 12 states and 13 transitions. Complement of second has 5 states. [2024-11-10 22:33:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-10 22:33:16,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2024-11-10 22:33:16,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-10 22:33:16,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:16,947 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-10 22:33:16,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:33:16,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-10 22:33:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:33:16,981 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:33:16,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:33:16,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-10 22:33:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:33:17,013 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 3 loop predicates [2024-11-10 22:33:17,013 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:17,026 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 14 states and 15 transitions. Complement of second has 6 states. [2024-11-10 22:33:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-10 22:33:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-10 22:33:17,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-10 22:33:17,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:17,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2024-11-10 22:33:17,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:17,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2024-11-10 22:33:17,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:33:17,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2024-11-10 22:33:17,029 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 22:33:17,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2024-11-10 22:33:17,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-10 22:33:17,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-10 22:33:17,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-10 22:33:17,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-10 22:33:17,030 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,030 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:33:17,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:33:17,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:33:17,030 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:33:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:33:17,030 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-10 22:33:17,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-10 22:33:17,030 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 22:33:17,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-10 22:33:17,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-10 22:33:17,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-10 22:33:17,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-10 22:33:17,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-10 22:33:17,031 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,031 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 22:33:17,031 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 22:33:17,031 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-10 22:33:17,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-10 22:33:17,031 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-10 22:33:17,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-10 22:33:17,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 10:33:17 BoogieIcfgContainer [2024-11-10 22:33:17,037 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-10 22:33:17,038 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:33:17,038 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:33:17,038 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:33:17,038 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:14" (3/4) ... [2024-11-10 22:33:17,040 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-10 22:33:17,041 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:33:17,041 INFO L158 Benchmark]: Toolchain (without parser) took 2963.06ms. Allocated memory was 163.6MB in the beginning and 199.2MB in the end (delta: 35.7MB). Free memory was 133.7MB in the beginning and 157.1MB in the end (delta: -23.4MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2024-11-10 22:33:17,041 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 135.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.66ms. Allocated memory is still 163.6MB. Free memory was 133.7MB in the beginning and 122.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-10 22:33:17,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.64ms. Allocated memory is still 163.6MB. Free memory was 122.5MB in the beginning and 121.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,042 INFO L158 Benchmark]: Boogie Preprocessor took 13.55ms. Allocated memory is still 163.6MB. Free memory was 121.2MB in the beginning and 119.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:33:17,042 INFO L158 Benchmark]: IcfgBuilder took 178.36ms. Allocated memory is still 163.6MB. Free memory was 119.8MB in the beginning and 110.6MB in the end (delta: 9.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 22:33:17,043 INFO L158 Benchmark]: BuchiAutomizer took 2589.27ms. Allocated memory was 163.6MB in the beginning and 199.2MB in the end (delta: 35.7MB). Free memory was 110.6MB in the beginning and 158.1MB in the end (delta: -47.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,043 INFO L158 Benchmark]: Witness Printer took 3.18ms. Allocated memory is still 199.2MB. Free memory was 158.1MB in the beginning and 157.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:33:17,044 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 135.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.66ms. Allocated memory is still 163.6MB. Free memory was 133.7MB in the beginning and 122.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.64ms. Allocated memory is still 163.6MB. Free memory was 122.5MB in the beginning and 121.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.55ms. Allocated memory is still 163.6MB. Free memory was 121.2MB in the beginning and 119.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 178.36ms. Allocated memory is still 163.6MB. Free memory was 119.8MB in the beginning and 110.6MB in the end (delta: 9.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 2589.27ms. Allocated memory was 163.6MB in the beginning and 199.2MB in the end (delta: 35.7MB). Free memory was 110.6MB in the beginning and 158.1MB in the end (delta: -47.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.18ms. Allocated memory is still 199.2MB. Free memory was 158.1MB in the beginning and 157.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (x + ((long) -1 * K)) and consists of 4 locations. One deterministic module has affine ranking function (x + ((long) -1 * K)) and consists of 3 locations. One deterministic module has affine ranking function (K + ((long) -1 * x)) and consists of 4 locations. One nondeterministic module has affine ranking function (K + ((long) -1 * x)) and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 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, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 32 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf95 smp82 dnf100 smp100 tf112 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-10 22:33:17,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:33:17,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE