./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 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-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.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:34:11,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:34:11,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-10 22:34:11,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:34:11,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:34:11,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-10 22:34:11,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:34:11,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:34:11,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:34:11,475 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:34:11,476 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:34:11,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:34:11,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:34:11,477 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:34:11,478 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-10 22:34:11,478 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-10 22:34:11,478 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-10 22:34:11,478 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-10 22:34:11,479 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-10 22:34:11,479 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-10 22:34:11,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:34:11,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-10 22:34:11,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:34:11,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:34:11,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-10 22:34:11,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-10 22:34:11,483 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-10 22:34:11,483 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:34:11,483 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:34:11,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:34:11,484 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-10 22:34:11,484 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:34:11,484 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:34:11,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:34:11,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:34:11,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:34:11,486 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-10 22:34:11,486 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac [2024-11-10 22:34:11,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:34:11,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:34:11,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:34:11,751 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:34:11,752 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:34:11,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Flip2.c [2024-11-10 22:34:13,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:34:13,227 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:34:13,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Flip2.c [2024-11-10 22:34:13,249 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad2b0958/6326848e141440378b68355a5c3434b9/FLAGabef6d1c6 [2024-11-10 22:34:13,640 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad2b0958/6326848e141440378b68355a5c3434b9 [2024-11-10 22:34:13,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:34:13,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:34:13,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:34:13,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:34:13,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:34:13,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97b8ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13, skipping insertion in model container [2024-11-10 22:34:13,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,667 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:34:13,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:34:13,820 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:34:13,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:34:13,846 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:34:13,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13 WrapperNode [2024-11-10 22:34:13,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:34:13,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:34:13,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:34:13,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:34:13,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,868 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2024-11-10 22:34:13,869 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:34:13,870 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:34:13,870 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:34:13,870 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:34:13,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,882 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-10 22:34:13,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,885 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:34:13,889 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:34:13,890 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:34:13,890 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:34:13,890 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (1/1) ... [2024-11-10 22:34:13,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:13,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:13,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:13,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-10 22:34:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:34:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:34:14,031 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:34:14,033 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:34:14,091 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-10 22:34:14,092 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:34:14,100 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:34:14,100 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:34:14,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:34:14 BoogieIcfgContainer [2024-11-10 22:34:14,101 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:34:14,101 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-10 22:34:14,102 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-10 22:34:14,105 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-10 22:34:14,105 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:34:14,105 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 10:34:13" (1/3) ... [2024-11-10 22:34:14,106 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a15b6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 10:34:14, skipping insertion in model container [2024-11-10 22:34:14,107 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:34:14,107 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:34:13" (2/3) ... [2024-11-10 22:34:14,107 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a15b6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 10:34:14, skipping insertion in model container [2024-11-10 22:34:14,107 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-10 22:34:14,108 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:34:14" (3/3) ... [2024-11-10 22:34:14,111 INFO L332 chiAutomizerObserver]: Analyzing ICFG Flip2.c [2024-11-10 22:34:14,160 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-10 22:34:14,160 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-10 22:34:14,160 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-10 22:34:14,160 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-10 22:34:14,160 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-10 22:34:14,160 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-10 22:34:14,160 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-10 22:34:14,160 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-10 22:34:14,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:14,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-10 22:34:14,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:34:14,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:34:14,180 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-10 22:34:14,180 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:34:14,180 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-10 22:34:14,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:14,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-11-10 22:34:14,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:34:14,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:34:14,181 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-10 22:34:14,181 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:34:14,188 INFO L745 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#ULTIMATE.init_returnLabel#1true assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~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; 5#L13true [2024-11-10 22:34:14,189 INFO L747 eck$LassoCheckResult]: Loop: 5#L13true assume true; 3#L13-1true assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 10#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; 5#L13true [2024-11-10 22:34:14,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:14,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1344, now seen corresponding path program 1 times [2024-11-10 22:34:14,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:14,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456076791] [2024-11-10 22:34:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:14,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash 38691, now seen corresponding path program 1 times [2024-11-10 22:34:14,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:14,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714664555] [2024-11-10 22:34:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:14,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:14,315 INFO L85 PathProgramCache]: Analyzing trace with hash 40048004, now seen corresponding path program 1 times [2024-11-10 22:34:14,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:14,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617393444] [2024-11-10 22:34:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:14,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:14,411 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:14,412 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:14,412 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:14,412 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:14,412 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:34:14,412 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,412 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:14,412 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:14,412 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2024-11-10 22:34:14,412 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:14,412 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:14,424 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:14,435 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:14,438 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:14,502 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:14,502 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:34:14,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:14,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:14,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-10 22:34:14,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:14,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:14,528 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:34:14,529 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: [] [2024-11-10 22:34:14,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-10 22:34:14,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:14,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:14,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-10 22:34:14,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:14,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:14,560 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:34:14,561 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: [] [2024-11-10 22:34:14,572 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 [2024-11-10 22:34:14,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:14,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:14,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-10 22:34:14,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:14,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:14,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-10 22:34:14,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:14,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:14,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-10 22:34:14,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:34:14,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:14,658 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:34:14,663 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 [2024-11-10 22:34:14,664 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:14,664 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:14,665 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:14,665 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:14,665 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:34:14,665 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,665 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:14,666 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:14,666 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2024-11-10 22:34:14,666 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:14,666 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:14,667 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:14,671 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:14,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:14,721 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:14,725 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:34:14,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:14,728 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) [2024-11-10 22:34:14,729 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 [2024-11-10 22:34:14,730 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:14,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:14,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:14,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:14,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:14,747 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:34:14,747 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:34:14,758 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:34:14,770 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 [2024-11-10 22:34:14,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:14,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:14,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-10 22:34:14,775 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:14,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:14,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:34:14,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:14,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:14,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:14,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:34:14,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:34:14,791 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:34:14,793 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-10 22:34:14,793 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-10 22:34:14,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:14,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:14,796 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:14,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-10 22:34:14,797 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:34:14,797 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:34:14,798 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:34:14,798 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 [] [2024-11-10 22:34:14,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:14,811 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:34:14,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:14,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:34:14,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:14,851 WARN L253 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:34:14,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:34:14,892 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 [2024-11-10 22:34:14,893 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:14,931 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 36 transitions. Complement of second has 8 states. [2024-11-10 22:34:14,933 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 [2024-11-10 22:34:14,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2024-11-10 22:34:14,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2024-11-10 22:34:14,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:14,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2024-11-10 22:34:14,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:14,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2024-11-10 22:34:14,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:14,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 36 transitions. [2024-11-10 22:34:14,941 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-10 22:34:14,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 17 states and 23 transitions. [2024-11-10 22:34:14,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-11-10 22:34:14,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2024-11-10 22:34:14,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2024-11-10 22:34:14,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:34:14,945 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2024-11-10 22:34:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2024-11-10 22:34:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-11-10 22:34:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2024-11-10 22:34:14,965 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 22 transitions. [2024-11-10 22:34:14,965 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2024-11-10 22:34:14,965 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-10 22:34:14,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2024-11-10 22:34:14,965 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-10 22:34:14,966 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:34:14,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:34:14,966 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-10 22:34:14,966 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-10 22:34:14,966 INFO L745 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 84#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~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; 85#L13 assume true; 91#L13-1 [2024-11-10 22:34:14,966 INFO L747 eck$LassoCheckResult]: Loop: 91#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 88#L14 assume !(main_~i~0#1 < main_~j~0#1); 89#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 92#L13 assume true; 91#L13-1 [2024-11-10 22:34:14,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:14,967 INFO L85 PathProgramCache]: Analyzing trace with hash 41673, now seen corresponding path program 1 times [2024-11-10 22:34:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387826740] [2024-11-10 22:34:14,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:14,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:14,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1167779, now seen corresponding path program 1 times [2024-11-10 22:34:14,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:14,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705034371] [2024-11-10 22:34:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:14,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:14,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:15,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:15,003 INFO L85 PathProgramCache]: Analyzing trace with hash -168570773, now seen corresponding path program 1 times [2024-11-10 22:34:15,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:15,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017957351] [2024-11-10 22:34:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:15,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:15,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-10 22:34:15,052 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:15,053 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:15,053 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:15,053 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:15,053 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:34:15,053 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,053 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:15,053 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:15,053 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2024-11-10 22:34:15,053 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:15,053 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:15,054 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,060 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,104 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:15,104 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:34:15,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-10 22:34:15,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:15,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:15,125 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:34:15,126 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-10 22:34:15,137 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 [2024-11-10 22:34:15,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-10 22:34:15,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:15,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:15,163 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:34:15,163 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-10 22:34:15,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-10 22:34:15,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,177 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-10 22:34:15,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:15,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:15,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:15,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-10 22:34:15,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:34:15,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:15,274 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:34:15,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-10 22:34:15,279 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:15,279 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:15,279 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:15,279 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:15,279 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:34:15,280 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,280 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:15,280 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:15,280 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2024-11-10 22:34:15,280 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:15,280 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:15,281 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,294 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,329 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:15,329 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:34:15,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-10 22:34:15,333 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:15,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:15,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:15,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:15,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:15,345 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:34:15,345 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:34:15,349 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:34:15,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:15,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,360 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-10 22:34:15,361 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:15,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:15,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:15,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:15,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:15,373 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:34:15,373 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:34:15,376 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:34:15,386 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 [2024-11-10 22:34:15,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,388 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-10 22:34:15,389 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:15,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:15,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:34:15,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:15,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:15,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:15,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:34:15,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:34:15,402 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:34:15,406 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2024-11-10 22:34:15,406 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-11-10 22:34:15,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,407 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-10 22:34:15,409 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:34:15,409 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:34:15,409 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:34:15,409 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 [] [2024-11-10 22:34:15,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:15,421 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:34:15,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:15,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:34:15,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:15,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:34:15,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:34:15,489 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-10 22:34:15,490 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:15,507 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 44 states and 58 transitions. Complement of second has 7 states. [2024-11-10 22:34:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-10 22:34:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-11-10 22:34:15,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-10 22:34:15,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:15,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-10 22:34:15,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:15,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-10 22:34:15,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:15,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 58 transitions. [2024-11-10 22:34:15,511 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2024-11-10 22:34:15,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 57 transitions. [2024-11-10 22:34:15,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2024-11-10 22:34:15,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2024-11-10 22:34:15,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 57 transitions. [2024-11-10 22:34:15,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:34:15,512 INFO L218 hiAutomatonCegarLoop]: Abstraction has 43 states and 57 transitions. [2024-11-10 22:34:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 57 transitions. [2024-11-10 22:34:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-11-10 22:34:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.358974358974359) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2024-11-10 22:34:15,515 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 53 transitions. [2024-11-10 22:34:15,515 INFO L425 stractBuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2024-11-10 22:34:15,515 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-10 22:34:15,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 53 transitions. [2024-11-10 22:34:15,516 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2024-11-10 22:34:15,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:34:15,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:34:15,516 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-10 22:34:15,516 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-10 22:34:15,517 INFO L745 eck$LassoCheckResult]: Stem: 186#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 187#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~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; 192#L13 assume true; 209#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 183#L14 assume !(main_~i~0#1 < main_~j~0#1); 193#L19 [2024-11-10 22:34:15,517 INFO L747 eck$LassoCheckResult]: Loop: 193#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 188#L13 assume true; 189#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 198#L14 assume !(main_~i~0#1 < main_~j~0#1); 193#L19 [2024-11-10 22:34:15,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash 40048007, now seen corresponding path program 1 times [2024-11-10 22:34:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:15,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142474109] [2024-11-10 22:34:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:15,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1051588, now seen corresponding path program 1 times [2024-11-10 22:34:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:15,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220417288] [2024-11-10 22:34:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:15,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:15,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1212214858, now seen corresponding path program 1 times [2024-11-10 22:34:15,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:15,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90440068] [2024-11-10 22:34:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:15,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:15,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:15,559 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:15,559 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:15,560 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:15,560 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:15,560 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:34:15,560 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,560 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:15,560 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:15,560 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2024-11-10 22:34:15,560 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:15,560 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:15,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,566 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,610 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:15,611 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:34:15,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,612 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-10 22:34:15,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:15,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:15,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:15,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,651 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-10 22:34:15,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:34:15,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:15,811 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:34:15,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:15,817 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:15,817 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:15,817 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:15,817 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:15,817 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:34:15,817 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,817 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:15,817 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:15,817 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2024-11-10 22:34:15,817 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:15,817 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:15,818 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:15,863 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:15,863 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:34:15,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,865 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-10 22:34:15,868 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:15,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:15,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:34:15,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:15,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:15,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:15,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:34:15,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:34:15,881 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:34:15,884 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-10 22:34:15,884 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 22:34:15,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:15,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:15,886 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:15,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-10 22:34:15,888 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:34:15,888 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:34:15,888 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:34:15,888 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 [] [2024-11-10 22:34:15,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-10 22:34:15,903 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:34:15,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:15,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:34:15,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:15,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:34:15,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:34:15,955 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 [2024-11-10 22:34:15,955 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 53 transitions. cyclomatic complexity: 21 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) [2024-11-10 22:34:15,971 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 53 transitions. cyclomatic complexity: 21. 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 101 states and 131 transitions. Complement of second has 5 states. [2024-11-10 22:34:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-10 22:34:15,972 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) [2024-11-10 22:34:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2024-11-10 22:34:15,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 4 letters. [2024-11-10 22:34:15,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:15,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2024-11-10 22:34:15,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:15,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 8 letters. [2024-11-10 22:34:15,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:15,973 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 131 transitions. [2024-11-10 22:34:15,975 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2024-11-10 22:34:15,976 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 84 states and 110 transitions. [2024-11-10 22:34:15,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2024-11-10 22:34:15,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2024-11-10 22:34:15,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 110 transitions. [2024-11-10 22:34:15,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:34:15,976 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-11-10 22:34:15,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 110 transitions. [2024-11-10 22:34:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2024-11-10 22:34:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 61 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2024-11-10 22:34:15,984 INFO L240 hiAutomatonCegarLoop]: Abstraction has 62 states and 83 transitions. [2024-11-10 22:34:15,984 INFO L425 stractBuchiCegarLoop]: Abstraction has 62 states and 83 transitions. [2024-11-10 22:34:15,984 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-10 22:34:15,984 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 83 transitions. [2024-11-10 22:34:15,985 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2024-11-10 22:34:15,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:34:15,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:34:15,986 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:34:15,986 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-10 22:34:15,986 INFO L745 eck$LassoCheckResult]: Stem: 373#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 374#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~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; 379#L13 assume true; 400#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 398#L14 assume !(main_~i~0#1 < main_~j~0#1); 380#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 381#L13 assume true; 411#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 387#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; 388#L13 [2024-11-10 22:34:15,986 INFO L747 eck$LassoCheckResult]: Loop: 388#L13 assume true; 397#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 394#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; 388#L13 [2024-11-10 22:34:15,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1212214855, now seen corresponding path program 1 times [2024-11-10 22:34:15,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:15,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332138542] [2024-11-10 22:34:15,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:15,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:16,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:34:16,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:34:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332138542] [2024-11-10 22:34:16,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332138542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:34:16,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:34:16,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:34:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009910061] [2024-11-10 22:34:16,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:34:16,031 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-10 22:34:16,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash 38691, now seen corresponding path program 2 times [2024-11-10 22:34:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:16,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704849530] [2024-11-10 22:34:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:16,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:16,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:16,070 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:16,071 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:16,071 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:16,071 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:16,071 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:34:16,071 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,071 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:16,071 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:16,071 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2024-11-10 22:34:16,071 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:16,071 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:16,072 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,084 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,087 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,121 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:16,121 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:34:16,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,122 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:16,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-10 22:34:16,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:16,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:16,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:16,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,154 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:16,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-10 22:34:16,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:34:16,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:16,191 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:34:16,196 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 [2024-11-10 22:34:16,196 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:16,196 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:16,196 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:16,196 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:16,196 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:34:16,196 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,196 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:16,196 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:16,196 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2024-11-10 22:34:16,196 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:16,196 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:16,197 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,205 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,207 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,236 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:16,236 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:34:16,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,237 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:16,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-10 22:34:16,240 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:16,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:16,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:34:16,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:16,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:16,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:16,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:34:16,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:34:16,256 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:34:16,260 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-10 22:34:16,260 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-10 22:34:16,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,266 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-10 22:34:16,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-10 22:34:16,268 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:34:16,268 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:34:16,268 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:34:16,268 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 [] [2024-11-10 22:34:16,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-10 22:34:16,279 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:34:16,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:16,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:34:16,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:16,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:16,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-10 22:34:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:16,350 WARN L253 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:34:16,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:16,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:34:16,369 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 [2024-11-10 22:34:16,369 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 62 states and 83 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:16,391 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 62 states and 83 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 99 states and 130 transitions. Complement of second has 7 states. [2024-11-10 22:34:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-10 22:34:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2024-11-10 22:34:16,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 3 letters. [2024-11-10 22:34:16,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:16,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 3 letters. [2024-11-10 22:34:16,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:16,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 6 letters. [2024-11-10 22:34:16,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:16,397 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 130 transitions. [2024-11-10 22:34:16,400 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2024-11-10 22:34:16,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 77 states and 103 transitions. [2024-11-10 22:34:16,401 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2024-11-10 22:34:16,401 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2024-11-10 22:34:16,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 103 transitions. [2024-11-10 22:34:16,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:34:16,402 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 103 transitions. [2024-11-10 22:34:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 103 transitions. [2024-11-10 22:34:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2024-11-10 22:34:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 62 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2024-11-10 22:34:16,405 INFO L240 hiAutomatonCegarLoop]: Abstraction has 63 states and 85 transitions. [2024-11-10 22:34:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:34:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:34:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:34:16,409 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2024-11-10 22:34:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:34:16,422 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2024-11-10 22:34:16,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 101 transitions. [2024-11-10 22:34:16,423 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 19 [2024-11-10 22:34:16,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 71 states and 89 transitions. [2024-11-10 22:34:16,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2024-11-10 22:34:16,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2024-11-10 22:34:16,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 89 transitions. [2024-11-10 22:34:16,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:34:16,424 INFO L218 hiAutomatonCegarLoop]: Abstraction has 71 states and 89 transitions. [2024-11-10 22:34:16,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 89 transitions. [2024-11-10 22:34:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2024-11-10 22:34:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.2950819672131149) internal successors, (79), 60 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2024-11-10 22:34:16,427 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 79 transitions. [2024-11-10 22:34:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:34:16,429 INFO L425 stractBuchiCegarLoop]: Abstraction has 61 states and 79 transitions. [2024-11-10 22:34:16,429 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-10 22:34:16,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 79 transitions. [2024-11-10 22:34:16,430 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 19 [2024-11-10 22:34:16,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:34:16,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:34:16,430 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:34:16,430 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-10 22:34:16,430 INFO L745 eck$LassoCheckResult]: Stem: 736#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 737#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 741#L13 assume true; 782#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 780#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 778#L13 assume true; 777#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 751#L14 assume !(main_~i~0#1 < main_~j~0#1); 752#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 743#L13 [2024-11-10 22:34:16,430 INFO L747 eck$LassoCheckResult]: Loop: 743#L13 assume true; 776#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 775#L14 assume !(main_~i~0#1 < main_~j~0#1); 742#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 743#L13 [2024-11-10 22:34:16,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:16,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1209592226, now seen corresponding path program 1 times [2024-11-10 22:34:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:16,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243485089] [2024-11-10 22:34:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:16,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:34:16,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:34:16,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243485089] [2024-11-10 22:34:16,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243485089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:34:16,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:34:16,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:34:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204708463] [2024-11-10 22:34:16,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:34:16,474 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-10 22:34:16,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1199519, now seen corresponding path program 2 times [2024-11-10 22:34:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:16,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971660392] [2024-11-10 22:34:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:16,478 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:16,479 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:16,501 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:16,501 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:16,501 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:16,501 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:16,501 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-10 22:34:16,501 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,501 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:16,501 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:16,501 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2024-11-10 22:34:16,501 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:16,501 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:16,502 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,505 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,507 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,540 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:16,540 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-10 22:34:16,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,541 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) [2024-11-10 22:34:16,543 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 [2024-11-10 22:34:16,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:16,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:16,564 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:34:16,564 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: [] [2024-11-10 22:34:16,579 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 [2024-11-10 22:34:16,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,583 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) [2024-11-10 22:34:16,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:16,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:16,592 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 [2024-11-10 22:34:16,609 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-10 22:34:16,609 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: [] [2024-11-10 22:34:16,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-11-10 22:34:16,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,621 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) [2024-11-10 22:34:16,623 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 [2024-11-10 22:34:16,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-10 22:34:16,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:16,645 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 [2024-11-10 22:34:16,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,647 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) [2024-11-10 22:34:16,648 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 [2024-11-10 22:34:16,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-10 22:34:16,649 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-10 22:34:16,721 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-10 22:34:16,725 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 [2024-11-10 22:34:16,726 INFO L204 LassoAnalysis]: Preferences: [2024-11-10 22:34:16,726 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-10 22:34:16,726 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-10 22:34:16,726 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-10 22:34:16,726 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-10 22:34:16,726 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,726 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-10 22:34:16,726 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-10 22:34:16,726 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2024-11-10 22:34:16,726 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-10 22:34:16,726 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-10 22:34:16,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,732 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-10 22:34:16,770 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-10 22:34:16,771 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-10 22:34:16,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,772 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) [2024-11-10 22:34:16,773 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 [2024-11-10 22:34:16,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:16,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:16,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:16,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:16,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:16,789 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:34:16,789 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:34:16,792 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:34:16,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-11-10 22:34:16,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,807 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) [2024-11-10 22:34:16,808 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 [2024-11-10 22:34:16,808 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:16,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:16,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:16,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:16,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:16,821 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-10 22:34:16,821 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-10 22:34:16,824 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-10 22:34:16,836 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 [2024-11-10 22:34:16,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,839 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) [2024-11-10 22:34:16,841 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 [2024-11-10 22:34:16,842 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-10 22:34:16,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-10 22:34:16,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-10 22:34:16,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-10 22:34:16,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-10 22:34:16,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-10 22:34:16,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-10 22:34:16,856 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-10 22:34:16,860 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-10 22:34:16,864 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2024-11-10 22:34:16,864 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2024-11-10 22:34:16,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-10 22:34:16,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:34:16,866 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) [2024-11-10 22:34:16,872 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 [2024-11-10 22:34:16,873 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-10 22:34:16,873 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-10 22:34:16,873 INFO L474 LassoAnalysis]: Proved termination. [2024-11-10 22:34:16,873 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 [] [2024-11-10 22:34:16,883 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 [2024-11-10 22:34:16,884 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-10 22:34:16,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:16,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 22:34:16,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:34:16,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:34:16,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:34:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:34:16,949 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 [2024-11-10 22:34:16,949 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 79 transitions. cyclomatic complexity: 27 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:16,975 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 79 transitions. cyclomatic complexity: 27. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 121 states and 150 transitions. Complement of second has 7 states. [2024-11-10 22:34:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-10 22:34:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:16,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2024-11-10 22:34:16,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 4 letters. [2024-11-10 22:34:16,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:16,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2024-11-10 22:34:16,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:16,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 8 letters. [2024-11-10 22:34:16,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-10 22:34:16,977 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 150 transitions. [2024-11-10 22:34:16,978 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-11-10 22:34:16,978 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 88 states and 111 transitions. [2024-11-10 22:34:16,978 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2024-11-10 22:34:16,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2024-11-10 22:34:16,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 111 transitions. [2024-11-10 22:34:16,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:34:16,979 INFO L218 hiAutomatonCegarLoop]: Abstraction has 88 states and 111 transitions. [2024-11-10 22:34:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 111 transitions. [2024-11-10 22:34:16,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2024-11-10 22:34:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.303030303030303) internal successors, (86), 65 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:34:16,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-11-10 22:34:16,982 INFO L240 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-11-10 22:34:16,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:34:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:34:16,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:34:16,983 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2024-11-10 22:34:16,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 22:34:16,992 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2024-11-10 22:34:16,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 84 transitions. [2024-11-10 22:34:16,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2024-11-10 22:34:16,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 63 states and 77 transitions. [2024-11-10 22:34:16,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2024-11-10 22:34:16,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2024-11-10 22:34:16,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 77 transitions. [2024-11-10 22:34:16,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-10 22:34:16,994 INFO L218 hiAutomatonCegarLoop]: Abstraction has 63 states and 77 transitions. [2024-11-10 22:34:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 77 transitions. [2024-11-10 22:34:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2024-11-10 22:34:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 45 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) [2024-11-10 22:34:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2024-11-10 22:34:17,003 INFO L240 hiAutomatonCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-10 22:34:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:34:17,004 INFO L425 stractBuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2024-11-10 22:34:17,004 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-10 22:34:17,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 58 transitions. [2024-11-10 22:34:17,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2024-11-10 22:34:17,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-10 22:34:17,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-10 22:34:17,005 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:34:17,005 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 1, 1, 1] [2024-11-10 22:34:17,005 INFO L745 eck$LassoCheckResult]: Stem: 1114#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1115#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~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; 1119#L13 assume true; 1126#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 1113#L14 assume !(main_~i~0#1 < main_~j~0#1); 1122#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1123#L13 assume true; 1143#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 1124#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; 1116#L13 [2024-11-10 22:34:17,005 INFO L747 eck$LassoCheckResult]: Loop: 1116#L13 assume true; 1110#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 1111#L14 assume !(main_~i~0#1 < main_~j~0#1); 1120#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 1121#L13 assume true; 1155#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 1154#L14 assume !(main_~i~0#1 < main_~j~0#1); 1151#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1152#L13 assume true; 1153#L13-1 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 1150#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; 1116#L13 [2024-11-10 22:34:17,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1212244646, now seen corresponding path program 2 times [2024-11-10 22:34:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:17,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017225425] [2024-11-10 22:34:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:17,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:17,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:17,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:17,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash -381905784, now seen corresponding path program 1 times [2024-11-10 22:34:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:17,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901592378] [2024-11-10 22:34:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:17,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:17,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:17,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:34:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1792440125, now seen corresponding path program 1 times [2024-11-10 22:34:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:34:17,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350241229] [2024-11-10 22:34:17,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:34:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:34:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:17,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:17,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 22:34:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:17,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 22:34:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 22:34:17,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 10:34:17 BoogieIcfgContainer [2024-11-10 22:34:17,193 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-10 22:34:17,194 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 22:34:17,194 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 22:34:17,194 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 22:34:17,194 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:34:14" (3/4) ... [2024-11-10 22:34:17,196 INFO L140 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-10 22:34:17,224 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 22:34:17,224 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 22:34:17,225 INFO L158 Benchmark]: Toolchain (without parser) took 3578.72ms. Allocated memory was 146.8MB in the beginning and 203.4MB in the end (delta: 56.6MB). Free memory was 119.0MB in the beginning and 113.4MB in the end (delta: 5.6MB). Peak memory consumption was 61.7MB. Max. memory is 16.1GB. [2024-11-10 22:34:17,225 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory was 103.3MB in the beginning and 103.2MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:34:17,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.95ms. Allocated memory is still 146.8MB. Free memory was 118.5MB in the beginning and 107.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-10 22:34:17,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.21ms. Allocated memory is still 146.8MB. Free memory was 107.5MB in the beginning and 106.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 22:34:17,225 INFO L158 Benchmark]: Boogie Preprocessor took 18.18ms. Allocated memory is still 146.8MB. Free memory was 106.0MB in the beginning and 105.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:34:17,225 INFO L158 Benchmark]: IcfgBuilder took 211.79ms. Allocated memory is still 146.8MB. Free memory was 105.0MB in the beginning and 95.6MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-10 22:34:17,226 INFO L158 Benchmark]: BuchiAutomizer took 3092.01ms. Allocated memory was 146.8MB in the beginning and 203.4MB in the end (delta: 56.6MB). Free memory was 95.6MB in the beginning and 115.5MB in the end (delta: -19.9MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2024-11-10 22:34:17,226 INFO L158 Benchmark]: Witness Printer took 30.50ms. Allocated memory is still 203.4MB. Free memory was 115.5MB in the beginning and 113.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 22:34:17,227 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 146.8MB. Free memory was 103.3MB in the beginning and 103.2MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.95ms. Allocated memory is still 146.8MB. Free memory was 118.5MB in the beginning and 107.5MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.21ms. Allocated memory is still 146.8MB. Free memory was 107.5MB in the beginning and 106.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.18ms. Allocated memory is still 146.8MB. Free memory was 106.0MB in the beginning and 105.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 211.79ms. Allocated memory is still 146.8MB. Free memory was 105.0MB in the beginning and 95.6MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3092.01ms. Allocated memory was 146.8MB in the beginning and 203.4MB in the end (delta: 56.6MB). Free memory was 95.6MB in the beginning and 115.5MB in the end (delta: -19.9MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. * Witness Printer took 30.50ms. Allocated memory is still 203.4MB. Free memory was 115.5MB in the beginning and 113.4MB 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 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 46 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 90 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, 50 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 49 mSDtfsCounter, 78 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: 32ms 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! [2024-11-10 22:34:17,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2024-11-10 22:34:17,446 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)