./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Flip2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Flip2.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 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:15:20,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:15:20,245 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-19 14:15:20,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:15:20,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:15:20,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:15:20,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:15:20,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:15:20,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:15:20,279 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:15:20,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:15:20,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:15:20,280 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:15:20,280 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-19 14:15:20,281 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-19 14:15:20,281 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-19 14:15:20,283 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-19 14:15:20,283 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-19 14:15:20,283 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-19 14:15:20,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:15:20,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-19 14:15:20,284 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:15:20,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:15:20,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-19 14:15:20,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-19 14:15:20,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-19 14:15:20,287 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:15:20,287 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:15:20,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:15:20,288 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-19 14:15:20,288 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:15:20,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:15:20,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:15:20,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:15:20,288 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:15:20,289 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-19 14:15:20,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac [2024-11-19 14:15:20,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:15:20,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:15:20,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:15:20,578 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:15:20,579 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:15:20,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Flip2.c [2024-11-19 14:15:21,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:15:22,191 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:15:22,192 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Flip2.c [2024-11-19 14:15:22,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518c98ff9/7054bc948be146f4bee12f29df550236/FLAG16da150e4 [2024-11-19 14:15:22,232 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518c98ff9/7054bc948be146f4bee12f29df550236 [2024-11-19 14:15:22,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:15:22,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:15:22,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:15:22,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:15:22,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:15:22,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540bce39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22, skipping insertion in model container [2024-11-19 14:15:22,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:15:22,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:15:22,481 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:15:22,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:15:22,513 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:15:22,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22 WrapperNode [2024-11-19 14:15:22,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:15:22,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:15:22,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:15:22,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:15:22,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,543 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2024-11-19 14:15:22,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:15:22,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:15:22,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:15:22,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:15:22,555 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,563 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-19 14:15:22,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:15:22,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:15:22,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:15:22,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:15:22,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (1/1) ... [2024-11-19 14:15:22,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:22,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:22,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:22,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-19 14:15:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:15:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:15:22,730 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:15:22,733 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:15:22,801 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-19 14:15:22,803 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:15:22,818 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:15:22,818 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 14:15:22,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:22 BoogieIcfgContainer [2024-11-19 14:15:22,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:15:22,820 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-19 14:15:22,820 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-19 14:15:22,823 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-19 14:15:22,824 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:15:22,824 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 02:15:22" (1/3) ... [2024-11-19 14:15:22,826 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c7f5335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 02:15:22, skipping insertion in model container [2024-11-19 14:15:22,826 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:15:22,826 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:15:22" (2/3) ... [2024-11-19 14:15:22,827 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c7f5335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 02:15:22, skipping insertion in model container [2024-11-19 14:15:22,828 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 14:15:22,828 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:22" (3/3) ... [2024-11-19 14:15:22,829 INFO L332 chiAutomizerObserver]: Analyzing ICFG Flip2.c [2024-11-19 14:15:22,885 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-19 14:15:22,886 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-19 14:15:22,886 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-19 14:15:22,886 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-19 14:15:22,887 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-19 14:15:22,887 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-19 14:15:22,887 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-19 14:15:22,887 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-19 14:15:22,894 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:22,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:15:22,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:15:22,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:15:22,916 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-19 14:15:22,916 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:15:22,917 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-19 14:15:22,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:22,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-19 14:15:22,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:15:22,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:15:22,919 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-19 14:15:22,920 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:15:22,926 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 2#L19-2true [2024-11-19 14:15:22,927 INFO L747 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 9#L14true assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 2#L19-2true [2024-11-19 14:15:22,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-19 14:15:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:22,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007622791] [2024-11-19 14:15:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:22,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:23,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2024-11-19 14:15:23,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:23,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836429115] [2024-11-19 14:15:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:23,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,101 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:23,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-11-19 14:15:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389018005] [2024-11-19 14:15:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,134 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:23,225 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:23,225 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:23,226 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:23,226 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:23,226 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:15:23,226 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,227 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:23,227 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:23,227 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2024-11-19 14:15:23,227 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:23,227 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:23,240 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:23,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:23,258 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:23,325 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:23,326 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:15:23,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:23,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:23,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-19 14:15:23,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:23,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:23,360 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:15:23,360 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:15:23,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-19 14:15:23,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:23,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:23,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-19 14:15:23,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:23,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:23,395 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:15:23,396 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:15:23,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-19 14:15:23,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:23,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:23,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-19 14:15:23,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:23,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:23,444 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 [2024-11-19 14:15:23,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:23,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:23,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-19 14:15:23,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:15:23,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:23,487 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:15:23,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-19 14:15:23,492 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:23,492 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:23,492 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:23,492 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:23,492 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:15:23,492 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,493 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:23,493 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:23,493 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2024-11-19 14:15:23,493 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:23,493 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:23,494 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:23,498 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:23,517 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:23,570 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:23,574 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:15:23,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:23,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:23,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-19 14:15:23,582 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:23,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:23,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:23,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:23,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:23,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:15:23,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:15:23,605 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:15:23,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-19 14:15:23,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:23,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:23,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-19 14:15:23,622 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:23,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:23,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:15:23,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:23,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:23,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:23,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:15:23,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:15:23,639 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:15:23,642 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-19 14:15:23,642 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-19 14:15:23,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:23,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:23,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-19 14:15:23,648 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:15:23,649 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:15:23,649 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:15:23,649 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2024-11-19 14:15:23,661 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 [2024-11-19 14:15:23,663 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:15:23,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:23,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:15:23,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:23,713 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:15:23,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:15:23,786 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:15:23,788 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:23,855 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 35 transitions. Complement of second has 8 states. [2024-11-19 14:15:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-19 14:15:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2024-11-19 14:15:23,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2024-11-19 14:15:23,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:23,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-19 14:15:23,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:23,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-19 14:15:23,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:23,875 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2024-11-19 14:15:23,879 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-19 14:15:23,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 14 states and 20 transitions. [2024-11-19 14:15:23,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-11-19 14:15:23,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-19 14:15:23,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2024-11-19 14:15:23,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:15:23,893 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2024-11-19 14:15:23,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2024-11-19 14:15:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2024-11-19 14:15:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2024-11-19 14:15:23,920 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2024-11-19 14:15:23,920 INFO L425 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2024-11-19 14:15:23,920 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-19 14:15:23,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2024-11-19 14:15:23,921 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2024-11-19 14:15:23,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:15:23,921 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:15:23,922 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-19 14:15:23,922 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-19 14:15:23,922 INFO L745 eck$LassoCheckResult]: Stem: 75#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 76#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 77#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 72#L14 [2024-11-19 14:15:23,922 INFO L747 eck$LassoCheckResult]: Loop: 72#L14 assume !(main_~i~0#1 < main_~j~0#1); 81#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 71#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 72#L14 [2024-11-19 14:15:23,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-11-19 14:15:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851892078] [2024-11-19 14:15:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:23,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:23,930 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2024-11-19 14:15:23,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:23,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779619426] [2024-11-19 14:15:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:23,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:23,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash 889694462, now seen corresponding path program 1 times [2024-11-19 14:15:23,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:23,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460619131] [2024-11-19 14:15:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:23,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,950 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:23,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:23,988 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:23,988 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:23,988 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:23,988 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:23,989 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:15:23,989 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:23,989 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:23,989 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:23,989 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2024-11-19 14:15:23,989 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:23,989 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:23,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:23,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:23,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,064 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:24,066 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:15:24,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,068 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:24,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-19 14:15:24,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:24,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:24,114 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:15:24,114 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:15:24,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:24,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,136 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-19 14:15:24,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:24,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:24,159 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:15:24,159 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: [] [2024-11-19 14:15:24,170 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 [2024-11-19 14:15:24,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,172 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-19 14:15:24,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:24,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:24,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:24,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,199 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-19 14:15:24,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:15:24,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:24,293 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:15:24,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-19 14:15:24,299 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:24,299 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:24,299 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:24,299 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:24,299 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:15:24,299 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,299 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:24,299 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:24,299 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2024-11-19 14:15:24,299 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:24,299 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:24,300 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,307 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,349 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:24,349 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:15:24,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,351 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-19 14:15:24,356 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:24,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:24,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:24,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:24,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:24,369 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:15:24,369 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:15:24,372 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:15:24,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-19 14:15:24,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,385 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-19 14:15:24,387 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:24,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:24,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:24,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:24,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:24,399 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:15:24,399 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:15:24,402 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:15:24,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-19 14:15:24,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,417 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-19 14:15:24,419 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:24,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:24,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:15:24,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:24,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:24,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:24,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:15:24,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:15:24,432 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:15:24,436 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2024-11-19 14:15:24,436 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-11-19 14:15:24,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,438 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-19 14:15:24,442 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:15:24,443 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:15:24,443 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:15:24,443 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-19 14:15:24,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-19 14:15:24,459 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:15:24,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:24,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:15:24,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:24,532 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:15:24,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:15:24,592 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:15:24,592 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 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) [2024-11-19 14:15:24,661 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. 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 35 states and 50 transitions. Complement of second has 7 states. [2024-11-19 14:15:24,663 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 [2024-11-19 14:15:24,664 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) [2024-11-19 14:15:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-11-19 14:15:24,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 3 letters. [2024-11-19 14:15:24,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:24,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-19 14:15:24,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:24,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 6 letters. [2024-11-19 14:15:24,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:24,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2024-11-19 14:15:24,666 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2024-11-19 14:15:24,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 31 states and 45 transitions. [2024-11-19 14:15:24,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-11-19 14:15:24,667 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-11-19 14:15:24,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 45 transitions. [2024-11-19 14:15:24,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:15:24,667 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 45 transitions. [2024-11-19 14:15:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 45 transitions. [2024-11-19 14:15:24,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2024-11-19 14:15:24,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2024-11-19 14:15:24,672 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 38 transitions. [2024-11-19 14:15:24,672 INFO L425 stractBuchiCegarLoop]: Abstraction has 25 states and 38 transitions. [2024-11-19 14:15:24,672 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-19 14:15:24,672 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 38 transitions. [2024-11-19 14:15:24,672 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2024-11-19 14:15:24,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:15:24,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:15:24,673 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-19 14:15:24,673 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-19 14:15:24,673 INFO L745 eck$LassoCheckResult]: Stem: 164#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 165#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 168#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 173#L14 assume !(main_~i~0#1 < main_~j~0#1); 166#L19 [2024-11-19 14:15:24,673 INFO L747 eck$LassoCheckResult]: Loop: 166#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 160#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 161#L14 assume !(main_~i~0#1 < main_~j~0#1); 166#L19 [2024-11-19 14:15:24,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:24,676 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2024-11-19 14:15:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:24,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914855933] [2024-11-19 14:15:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:24,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:24,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:24,688 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:24,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2024-11-19 14:15:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:24,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5183947] [2024-11-19 14:15:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:24,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:24,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:24,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2024-11-19 14:15:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138668272] [2024-11-19 14:15:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:24,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:24,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:24,731 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:24,732 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:24,732 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:24,732 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:24,732 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:15:24,732 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,732 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:24,732 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:24,732 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2024-11-19 14:15:24,732 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:24,732 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:24,733 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,740 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,769 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:24,769 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:15:24,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,770 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-19 14:15:24,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:24,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:24,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-19 14:15:24,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,802 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:24,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-19 14:15:24,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:15:24,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:24,922 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:15:24,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-19 14:15:24,928 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:24,928 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:24,928 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:24,928 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:24,928 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:15:24,928 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,928 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:24,928 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:24,928 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2024-11-19 14:15:24,928 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:24,928 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:24,930 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,939 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,942 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:24,982 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:24,982 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:15:24,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:24,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:24,984 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) [2024-11-19 14:15:24,987 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 [2024-11-19 14:15:24,988 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:24,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:24,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:15:24,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:24,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:24,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:25,000 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:15:25,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:15:25,004 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:15:25,016 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 14:15:25,016 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 14:15:25,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,021 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-19 14:15:25,023 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:15:25,024 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:15:25,024 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:15:25,024 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2024-11-19 14:15:25,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:25,040 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:15:25,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:25,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:15:25,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:25,101 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:15:25,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:15:25,136 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:15:25,138 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:25,155 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 92 transitions. Complement of second has 5 states. [2024-11-19 14:15:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:15:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2024-11-19 14:15:25,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2024-11-19 14:15:25,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:25,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2024-11-19 14:15:25,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:25,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2024-11-19 14:15:25,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:25,158 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 92 transitions. [2024-11-19 14:15:25,160 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2024-11-19 14:15:25,161 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 56 states and 81 transitions. [2024-11-19 14:15:25,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-11-19 14:15:25,161 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2024-11-19 14:15:25,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2024-11-19 14:15:25,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:15:25,162 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 81 transitions. [2024-11-19 14:15:25,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2024-11-19 14:15:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2024-11-19 14:15:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions. [2024-11-19 14:15:25,170 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 61 transitions. [2024-11-19 14:15:25,170 INFO L425 stractBuchiCegarLoop]: Abstraction has 42 states and 61 transitions. [2024-11-19 14:15:25,170 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-19 14:15:25,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 61 transitions. [2024-11-19 14:15:25,171 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2024-11-19 14:15:25,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:15:25,171 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:15:25,172 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2024-11-19 14:15:25,172 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-19 14:15:25,176 INFO L745 eck$LassoCheckResult]: Stem: 293#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 294#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 298#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 321#L14 assume !(main_~i~0#1 < main_~j~0#1); 295#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 296#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 306#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 304#L19-2 [2024-11-19 14:15:25,176 INFO L747 eck$LassoCheckResult]: Loop: 304#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 315#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 304#L19-2 [2024-11-19 14:15:25,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2024-11-19 14:15:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:25,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003102142] [2024-11-19 14:15:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:25,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:15:25,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:15:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003102142] [2024-11-19 14:15:25,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003102142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:15:25,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:15:25,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:15:25,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150873597] [2024-11-19 14:15:25,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:15:25,244 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 14:15:25,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2024-11-19 14:15:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:25,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418213603] [2024-11-19 14:15:25,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:15:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:25,253 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:15:25,254 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:15:25,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:25,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:25,318 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:25,318 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:25,319 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:25,319 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:25,319 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:15:25,319 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,319 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:25,319 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:25,319 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2024-11-19 14:15:25,320 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:25,320 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:25,321 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,331 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,334 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,377 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:25,377 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:15:25,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,381 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-19 14:15:25,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:25,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:25,421 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 [2024-11-19 14:15:25,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,423 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-19 14:15:25,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:15:25,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:25,466 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:15:25,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-19 14:15:25,471 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:25,471 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:25,471 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:25,471 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:25,471 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:15:25,472 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,472 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:25,472 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:25,472 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2024-11-19 14:15:25,472 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:25,472 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:25,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,480 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,483 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,513 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:25,513 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:15:25,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,515 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-19 14:15:25,517 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:25,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:25,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:15:25,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:25,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:25,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:25,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:15:25,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:15:25,530 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:15:25,533 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 14:15:25,534 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 14:15:25,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,535 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-19 14:15:25,537 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:15:25,537 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:15:25,537 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:15:25,537 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2024-11-19 14:15:25,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:25,549 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:15:25,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:25,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:15:25,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:25,585 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:15:25,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:15:25,601 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:15:25,601 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29 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) [2024-11-19 14:15:25,620 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29. 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 74 states and 105 transitions. Complement of second has 7 states. [2024-11-19 14:15:25,621 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 [2024-11-19 14:15:25,621 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) [2024-11-19 14:15:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2024-11-19 14:15:25,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2024-11-19 14:15:25,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:25,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2024-11-19 14:15:25,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:25,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-19 14:15:25,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:25,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 105 transitions. [2024-11-19 14:15:25,623 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2024-11-19 14:15:25,624 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 58 states and 84 transitions. [2024-11-19 14:15:25,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2024-11-19 14:15:25,624 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2024-11-19 14:15:25,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 84 transitions. [2024-11-19 14:15:25,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:15:25,625 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 84 transitions. [2024-11-19 14:15:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 84 transitions. [2024-11-19 14:15:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2024-11-19 14:15:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 42 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2024-11-19 14:15:25,630 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 63 transitions. [2024-11-19 14:15:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:15:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:15:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:15:25,633 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 14:15:25,645 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2024-11-19 14:15:25,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 69 transitions. [2024-11-19 14:15:25,646 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2024-11-19 14:15:25,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 45 states and 62 transitions. [2024-11-19 14:15:25,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2024-11-19 14:15:25,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2024-11-19 14:15:25,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 62 transitions. [2024-11-19 14:15:25,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:15:25,646 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 62 transitions. [2024-11-19 14:15:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 62 transitions. [2024-11-19 14:15:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2024-11-19 14:15:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:25,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2024-11-19 14:15:25,652 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 58 transitions. [2024-11-19 14:15:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:15:25,652 INFO L425 stractBuchiCegarLoop]: Abstraction has 41 states and 58 transitions. [2024-11-19 14:15:25,652 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-19 14:15:25,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 58 transitions. [2024-11-19 14:15:25,653 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2024-11-19 14:15:25,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:15:25,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:15:25,654 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2024-11-19 14:15:25,654 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-19 14:15:25,654 INFO L745 eck$LassoCheckResult]: Stem: 551#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 552#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 556#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 562#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 586#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 557#L14 assume !(main_~i~0#1 < main_~j~0#1); 558#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 554#L19-2 [2024-11-19 14:15:25,654 INFO L747 eck$LassoCheckResult]: Loop: 554#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 585#L14 assume !(main_~i~0#1 < main_~j~0#1); 553#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 554#L19-2 [2024-11-19 14:15:25,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1810655530, now seen corresponding path program 1 times [2024-11-19 14:15:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:25,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382158382] [2024-11-19 14:15:25,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:25,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:15:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:15:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382158382] [2024-11-19 14:15:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382158382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:15:25,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:15:25,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:15:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442720539] [2024-11-19 14:15:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:15:25,693 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 14:15:25,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:25,693 INFO L85 PathProgramCache]: Analyzing trace with hash 40879, now seen corresponding path program 2 times [2024-11-19 14:15:25,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:25,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723593565] [2024-11-19 14:15:25,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:15:25,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:25,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:15:25,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:15:25,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:25,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:25,731 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:25,731 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:25,731 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:25,731 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:25,731 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 14:15:25,731 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,731 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:25,731 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:25,731 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2024-11-19 14:15:25,732 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:25,732 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:25,732 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,744 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,778 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:25,778 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 14:15:25,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,780 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-19 14:15:25,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:25,783 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:25,800 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:15:25,801 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:15:25,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:25,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,814 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-19 14:15:25,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:25,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:25,834 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 14:15:25,835 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 14:15:25,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-19 14:15:25,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,846 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-19 14:15:25,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 14:15:25,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:25,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:25,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,873 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-19 14:15:25,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 14:15:25,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 14:15:25,942 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 14:15:25,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-11-19 14:15:25,947 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 14:15:25,947 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 14:15:25,947 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 14:15:25,947 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 14:15:25,947 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 14:15:25,947 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,947 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 14:15:25,947 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 14:15:25,947 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2024-11-19 14:15:25,947 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 14:15:25,947 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 14:15:25,948 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,962 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 14:15:25,989 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 14:15:25,990 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 14:15:25,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:25,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:25,994 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:25,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-19 14:15:25,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:26,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:26,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:26,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:26,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:26,007 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:15:26,007 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:15:26,009 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:15:26,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:26,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:26,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:26,027 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:26,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-19 14:15:26,033 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:26,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:26,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:26,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:26,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:26,045 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-19 14:15:26,045 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-19 14:15:26,050 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 14:15:26,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:26,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:26,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:26,063 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:26,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-19 14:15:26,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 14:15:26,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 14:15:26,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 14:15:26,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 14:15:26,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 14:15:26,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 14:15:26,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 14:15:26,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 14:15:26,079 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 14:15:26,083 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2024-11-19 14:15:26,083 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-11-19 14:15:26,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 14:15:26,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:15:26,085 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 14:15:26,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-11-19 14:15:26,086 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 14:15:26,086 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 14:15:26,086 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 14:15:26,086 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-19 14:15:26,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:26,098 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 14:15:26,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:26,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 14:15:26,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:15:26,127 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:15:26,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:15:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:15:26,143 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-19 14:15:26,143 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:26,163 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 74 states and 102 transitions. Complement of second has 5 states. [2024-11-19 14:15:26,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-19 14:15:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2024-11-19 14:15:26,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2024-11-19 14:15:26,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:26,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2024-11-19 14:15:26,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:26,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 6 letters. [2024-11-19 14:15:26,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 14:15:26,168 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 102 transitions. [2024-11-19 14:15:26,173 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-19 14:15:26,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 57 states and 79 transitions. [2024-11-19 14:15:26,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2024-11-19 14:15:26,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2024-11-19 14:15:26,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 79 transitions. [2024-11-19 14:15:26,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:15:26,174 INFO L218 hiAutomatonCegarLoop]: Abstraction has 57 states and 79 transitions. [2024-11-19 14:15:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 79 transitions. [2024-11-19 14:15:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2024-11-19 14:15:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2024-11-19 14:15:26,179 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 69 transitions. [2024-11-19 14:15:26,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:15:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:15:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:15:26,179 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 14:15:26,196 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2024-11-19 14:15:26,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 66 transitions. [2024-11-19 14:15:26,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-11-19 14:15:26,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 47 states and 61 transitions. [2024-11-19 14:15:26,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2024-11-19 14:15:26,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2024-11-19 14:15:26,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 61 transitions. [2024-11-19 14:15:26,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 14:15:26,200 INFO L218 hiAutomatonCegarLoop]: Abstraction has 47 states and 61 transitions. [2024-11-19 14:15:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 61 transitions. [2024-11-19 14:15:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2024-11-19 14:15:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:15:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2024-11-19 14:15:26,204 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 47 transitions. [2024-11-19 14:15:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:15:26,206 INFO L425 stractBuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2024-11-19 14:15:26,206 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-19 14:15:26,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 47 transitions. [2024-11-19 14:15:26,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2024-11-19 14:15:26,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 14:15:26,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 14:15:26,207 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2024-11-19 14:15:26,207 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1] [2024-11-19 14:15:26,207 INFO L745 eck$LassoCheckResult]: Stem: 815#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 816#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 821#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 828#L14 assume !(main_~i~0#1 < main_~j~0#1); 824#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 839#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 822#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 811#L19-2 [2024-11-19 14:15:26,207 INFO L747 eck$LassoCheckResult]: Loop: 811#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 812#L14 assume !(main_~i~0#1 < main_~j~0#1); 817#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 818#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 845#L14 assume !(main_~i~0#1 < main_~j~0#1); 842#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 843#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 844#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 811#L19-2 [2024-11-19 14:15:26,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724560, now seen corresponding path program 2 times [2024-11-19 14:15:26,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:26,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781972931] [2024-11-19 14:15:26,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:15:26,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:26,213 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:15:26,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 14:15:26,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:26,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:26,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2053356838, now seen corresponding path program 1 times [2024-11-19 14:15:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:26,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926886047] [2024-11-19 14:15:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:26,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:26,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:26,239 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:26,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:15:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash 399570165, now seen corresponding path program 1 times [2024-11-19 14:15:26,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:15:26,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6563312] [2024-11-19 14:15:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:15:26,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:15:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:26,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:26,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:15:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:26,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:15:26,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:15:26,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 02:15:26 BoogieIcfgContainer [2024-11-19 14:15:26,377 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-19 14:15:26,377 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 14:15:26,378 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 14:15:26,378 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 14:15:26,378 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:15:22" (3/4) ... [2024-11-19 14:15:26,380 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-19 14:15:26,404 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 14:15:26,404 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 14:15:26,405 INFO L158 Benchmark]: Toolchain (without parser) took 4167.22ms. Allocated memory was 165.7MB in the beginning and 234.9MB in the end (delta: 69.2MB). Free memory was 92.4MB in the beginning and 72.1MB in the end (delta: 20.3MB). Peak memory consumption was 89.9MB. Max. memory is 16.1GB. [2024-11-19 14:15:26,405 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 165.7MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:15:26,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.11ms. Allocated memory is still 165.7MB. Free memory was 92.4MB in the beginning and 80.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 14:15:26,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.98ms. Allocated memory is still 165.7MB. Free memory was 80.9MB in the beginning and 79.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 14:15:26,405 INFO L158 Benchmark]: Boogie Preprocessor took 28.36ms. Allocated memory is still 165.7MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:15:26,405 INFO L158 Benchmark]: RCFGBuilder took 245.64ms. Allocated memory is still 165.7MB. Free memory was 78.1MB in the beginning and 68.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-19 14:15:26,406 INFO L158 Benchmark]: BuchiAutomizer took 3557.41ms. Allocated memory was 165.7MB in the beginning and 234.9MB in the end (delta: 69.2MB). Free memory was 68.7MB in the beginning and 74.2MB in the end (delta: -5.4MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2024-11-19 14:15:26,406 INFO L158 Benchmark]: Witness Printer took 26.72ms. Allocated memory is still 234.9MB. Free memory was 74.2MB in the beginning and 72.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 14:15:26,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 165.7MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.11ms. Allocated memory is still 165.7MB. Free memory was 92.4MB in the beginning and 80.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.98ms. Allocated memory is still 165.7MB. Free memory was 80.9MB in the beginning and 79.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.36ms. Allocated memory is still 165.7MB. Free memory was 79.8MB in the beginning and 78.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 245.64ms. Allocated memory is still 165.7MB. Free memory was 78.1MB in the beginning and 68.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3557.41ms. Allocated memory was 165.7MB in the beginning and 234.9MB in the end (delta: 69.2MB). Free memory was 68.7MB in the beginning and 74.2MB in the end (delta: -5.4MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. * Witness Printer took 26.72ms. Allocated memory is still 234.9MB. Free memory was 74.2MB in the beginning and 72.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function j and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function (((long) -1 * j) + i) and consists of 3 locations. One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 35 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 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 [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 36 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf92 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2] [L14] COND FALSE !(i < j) VAL [i=2, j=2] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2] [L14] COND FALSE !(i < j) VAL [i=2, j=2] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-19 14:15:26,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:26,622 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 [2024-11-19 14:15:26,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-19 14:15:27,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-19 14:15:27,242 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)