./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.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 0f57a241e2c58801cabb7fcf6419a1ee8415c4d2687e9efe6a7f86e17b88f5ca --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:48:59,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:48:59,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-24 23:48:59,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:48:59,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:48:59,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:48:59,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:48:59,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:48:59,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:48:59,243 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:48:59,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:48:59,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:48:59,245 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:48:59,246 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-24 23:48:59,246 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-24 23:48:59,248 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-24 23:48:59,248 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-24 23:48:59,248 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-24 23:48:59,249 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-24 23:48:59,249 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:48:59,249 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-24 23:48:59,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:48:59,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:48:59,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-24 23:48:59,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-24 23:48:59,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-24 23:48:59,251 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:48:59,251 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:48:59,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:48:59,252 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-24 23:48:59,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:48:59,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:48:59,252 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:48:59,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:48:59,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:48:59,254 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-24 23:48:59,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f57a241e2c58801cabb7fcf6419a1ee8415c4d2687e9efe6a7f86e17b88f5ca [2024-10-24 23:48:59,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:48:59,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:48:59,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:48:59,541 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:48:59,541 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:48:59,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2024-10-24 23:49:01,027 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:49:01,180 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:49:01,180 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2024-10-24 23:49:01,187 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1036bd487/040d5337a8414d72bac69fdc2328b761/FLAGd85b0ab56 [2024-10-24 23:49:01,199 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1036bd487/040d5337a8414d72bac69fdc2328b761 [2024-10-24 23:49:01,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:49:01,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:49:01,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:49:01,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:49:01,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:49:01,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6f1e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01, skipping insertion in model container [2024-10-24 23:49:01,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,226 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:49:01,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:49:01,418 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:49:01,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:49:01,453 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:49:01,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01 WrapperNode [2024-10-24 23:49:01,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:49:01,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:49:01,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:49:01,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:49:01,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,474 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-10-24 23:49:01,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:49:01,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:49:01,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:49:01,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:49:01,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,488 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-24 23:49:01,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,489 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,495 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:49:01,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:49:01,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:49:01,497 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:49:01,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (1/1) ... [2024-10-24 23:49:01,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:01,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:01,528 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) [2024-10-24 23:49:01,537 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 [2024-10-24 23:49:01,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:49:01,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:49:01,633 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:49:01,636 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:49:01,731 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-10-24 23:49:01,731 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:49:01,746 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:49:01,747 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 23:49:01,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:49:01 BoogieIcfgContainer [2024-10-24 23:49:01,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:49:01,749 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-24 23:49:01,749 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-24 23:49:01,753 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-24 23:49:01,753 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:49:01,754 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 24.10 11:49:01" (1/3) ... [2024-10-24 23:49:01,755 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ce69aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:49:01, skipping insertion in model container [2024-10-24 23:49:01,755 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:49:01,755 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:49:01" (2/3) ... [2024-10-24 23:49:01,756 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ce69aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:49:01, skipping insertion in model container [2024-10-24 23:49:01,756 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:49:01,756 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:49:01" (3/3) ... [2024-10-24 23:49:01,758 INFO L332 chiAutomizerObserver]: Analyzing ICFG KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c [2024-10-24 23:49:01,814 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-24 23:49:01,815 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-24 23:49:01,815 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-24 23:49:01,815 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-24 23:49:01,815 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-24 23:49:01,816 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-24 23:49:01,816 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-24 23:49:01,816 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-24 23:49:01,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:01,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:49:01,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:49:01,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:49:01,842 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-24 23:49:01,842 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:49:01,842 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-24 23:49:01,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:01,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:49:01,844 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:49:01,845 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:49:01,845 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-24 23:49:01,845 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:49:01,852 INFO L745 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 9#L23-1true [2024-10-24 23:49:01,853 INFO L747 eck$LassoCheckResult]: Loop: 9#L23-1true assume !!(main_~x~0#1 < 255); 3#L18true assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 6#L18-2true assume 0 != main_~debug~0#1;main_~x~0#1 := 0; 9#L23-1true [2024-10-24 23:49:01,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-24 23:49:01,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:01,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948852720] [2024-10-24 23:49:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:01,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:01,941 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:01,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:01,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash 40878, now seen corresponding path program 1 times [2024-10-24 23:49:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102358064] [2024-10-24 23:49:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:01,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:02,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2024-10-24 23:49:02,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:02,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477849128] [2024-10-24 23:49:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:49:02,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:49:02,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477849128] [2024-10-24 23:49:02,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477849128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:49:02,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:49:02,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:49:02,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110075823] [2024-10-24 23:49:02,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:49:02,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:49:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:49:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:49:02,213 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:49:02,223 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2024-10-24 23:49:02,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-10-24 23:49:02,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:49:02,227 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2024-10-24 23:49:02,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-10-24 23:49:02,228 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-10-24 23:49:02,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2024-10-24 23:49:02,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-24 23:49:02,229 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5 states and 6 transitions. [2024-10-24 23:49:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2024-10-24 23:49:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2024-10-24 23:49:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2024-10-24 23:49:02,254 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5 states and 6 transitions. [2024-10-24 23:49:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:49:02,261 INFO L425 stractBuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2024-10-24 23:49:02,262 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-24 23:49:02,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2024-10-24 23:49:02,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:49:02,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:49:02,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:49:02,263 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-24 23:49:02,263 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:49:02,263 INFO L745 eck$LassoCheckResult]: Stem: 32#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 33#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 31#L23-1 [2024-10-24 23:49:02,263 INFO L747 eck$LassoCheckResult]: Loop: 31#L23-1 assume !!(main_~x~0#1 < 255); 29#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 30#L18-2 assume !(0 != main_~debug~0#1); 31#L23-1 [2024-10-24 23:49:02,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:02,265 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-10-24 23:49:02,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:02,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761571941] [2024-10-24 23:49:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:02,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:02,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 40880, now seen corresponding path program 1 times [2024-10-24 23:49:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:02,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508013195] [2024-10-24 23:49:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,306 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:02,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 28699822, now seen corresponding path program 1 times [2024-10-24 23:49:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025259439] [2024-10-24 23:49:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:02,372 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:49:02,372 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:49:02,372 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:49:02,373 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:49:02,373 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:49:02,373 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:02,373 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:49:02,373 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:49:02,373 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration2_Loop [2024-10-24 23:49:02,373 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:49:02,373 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:49:02,387 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:02,408 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:02,518 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:49:02,519 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:49:02,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:02,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:02,526 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) [2024-10-24 23:49:02,528 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 [2024-10-24 23:49:02,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:49:02,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:49:02,558 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 [2024-10-24 23:49:02,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:02,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:02,560 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) [2024-10-24 23:49:02,562 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 [2024-10-24 23:49:02,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:49:02,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:49:02,604 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:49:02,610 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 [2024-10-24 23:49:02,610 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:49:02,610 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:49:02,610 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:49:02,610 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:49:02,610 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:49:02,611 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:02,611 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:49:02,611 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:49:02,611 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration2_Loop [2024-10-24 23:49:02,611 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:49:02,611 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:49:02,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:02,626 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:02,706 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:49:02,710 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:49:02,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:02,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:02,714 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) [2024-10-24 23:49:02,715 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 [2024-10-24 23:49:02,716 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:49:02,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:49:02,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:49:02,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:49:02,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:49:02,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:49:02,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:49:02,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:49:02,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:49:02,743 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:49:02,744 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:49:02,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:02,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:02,748 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) [2024-10-24 23:49:02,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-24 23:49:02,751 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:49:02,751 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:49:02,752 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:49:02,753 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-10-24 23:49:02,767 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 [2024-10-24 23:49:02,770 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:49:02,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:02,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:49:02,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:02,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:49:02,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:49:02,886 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 [2024-10-24 23:49:02,887 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 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) [2024-10-24 23:49:02,930 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. 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 12 states and 15 transitions. Complement of second has 7 states. [2024-10-24 23:49:02,931 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 [2024-10-24 23:49:02,932 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) [2024-10-24 23:49:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2024-10-24 23:49:02,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2024-10-24 23:49:02,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:02,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2024-10-24 23:49:02,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:02,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2024-10-24 23:49:02,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:02,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2024-10-24 23:49:02,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:49:02,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 15 transitions. [2024-10-24 23:49:02,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-24 23:49:02,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-10-24 23:49:02,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2024-10-24 23:49:02,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:49:02,940 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-10-24 23:49:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2024-10-24 23:49:02,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2024-10-24 23:49:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-10-24 23:49:02,942 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-10-24 23:49:02,942 INFO L425 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-10-24 23:49:02,942 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-24 23:49:02,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2024-10-24 23:49:02,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:49:02,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:49:02,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:49:02,943 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-24 23:49:02,943 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:49:02,944 INFO L745 eck$LassoCheckResult]: Stem: 92#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 94#L23-1 assume !!(main_~x~0#1 < 255); 85#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 86#L18-2 [2024-10-24 23:49:02,944 INFO L747 eck$LassoCheckResult]: Loop: 86#L18-2 assume !(0 != main_~debug~0#1); 89#L23-1 assume !!(main_~x~0#1 < 255); 95#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 86#L18-2 [2024-10-24 23:49:02,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-10-24 23:49:02,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:02,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099485445] [2024-10-24 23:49:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,951 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:02,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 2 times [2024-10-24 23:49:02,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:02,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664952023] [2024-10-24 23:49:02,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:02,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:02,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665941, now seen corresponding path program 1 times [2024-10-24 23:49:02,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:02,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426633818] [2024-10-24 23:49:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:03,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:03,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:03,034 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 [2024-10-24 23:49:03,072 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:49:03,072 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:49:03,073 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:49:03,073 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:49:03,073 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:49:03,073 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,073 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:49:03,073 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:49:03,073 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration3_Loop [2024-10-24 23:49:03,074 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:49:03,074 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:49:03,075 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:03,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:03,161 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:49:03,162 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:49:03,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,164 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) [2024-10-24 23:49:03,166 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 [2024-10-24 23:49:03,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:49:03,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:49:03,183 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:49:03,183 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~debug~0#1=0} Honda state: {ULTIMATE.start_main_~debug~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:49:03,199 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 [2024-10-24 23:49:03,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,201 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) [2024-10-24 23:49:03,202 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 [2024-10-24 23:49:03,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:49:03,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:49:03,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-24 23:49:03,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,236 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) [2024-10-24 23:49:03,238 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 [2024-10-24 23:49:03,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:49:03,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:49:03,279 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:49:03,285 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 [2024-10-24 23:49:03,285 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:49:03,285 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:49:03,285 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:49:03,286 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:49:03,286 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:49:03,286 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,286 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:49:03,286 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:49:03,286 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration3_Loop [2024-10-24 23:49:03,286 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:49:03,286 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:49:03,287 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:03,293 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:03,373 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:49:03,374 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:49:03,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,375 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) [2024-10-24 23:49:03,376 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 [2024-10-24 23:49:03,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:49:03,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:49:03,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:49:03,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:49:03,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:49:03,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:49:03,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:49:03,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:49:03,390 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:49:03,405 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 [2024-10-24 23:49:03,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,408 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) [2024-10-24 23:49:03,409 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 [2024-10-24 23:49:03,410 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:49:03,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:49:03,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:49:03,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:49:03,420 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:49:03,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:49:03,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:49:03,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:49:03,425 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:49:03,427 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:49:03,427 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:49:03,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,430 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) [2024-10-24 23:49:03,433 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 [2024-10-24 23:49:03,434 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:49:03,434 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:49:03,434 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:49:03,434 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-10-24 23:49:03,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-24 23:49:03,452 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:49:03,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:03,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:49:03,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:03,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:49:03,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:49:03,504 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-24 23:49:03,504 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 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) [2024-10-24 23:49:03,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. 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 17 states and 22 transitions. Complement of second has 7 states. [2024-10-24 23:49:03,529 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 [2024-10-24 23:49:03,530 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) [2024-10-24 23:49:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-10-24 23:49:03,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2024-10-24 23:49:03,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:03,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2024-10-24 23:49:03,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:03,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2024-10-24 23:49:03,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:03,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2024-10-24 23:49:03,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:49:03,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2024-10-24 23:49:03,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-10-24 23:49:03,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-10-24 23:49:03,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2024-10-24 23:49:03,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:49:03,534 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-10-24 23:49:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2024-10-24 23:49:03,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-24 23:49:03,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-10-24 23:49:03,536 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-10-24 23:49:03,536 INFO L425 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-10-24 23:49:03,536 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-24 23:49:03,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2024-10-24 23:49:03,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-24 23:49:03,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:49:03,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:49:03,538 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2024-10-24 23:49:03,538 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:49:03,538 INFO L745 eck$LassoCheckResult]: Stem: 164#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 165#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~post1#1, main_~x~0#1, main_~debug~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~debug~0#1 := 0; 166#L23-1 assume !!(main_~x~0#1 < 255); 167#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 161#L18-2 assume !(0 != main_~debug~0#1); 163#L23-1 assume !!(main_~x~0#1 < 255); 157#L18 assume 0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2);main_#t~post1#1 := main_~x~0#1;main_~x~0#1 := main_#t~post1#1 - 1;havoc main_#t~post1#1; 158#L18-2 [2024-10-24 23:49:03,538 INFO L747 eck$LassoCheckResult]: Loop: 158#L18-2 assume !(0 != main_~debug~0#1); 170#L23-1 assume !!(main_~x~0#1 < 255); 169#L18 assume !(0 != (if main_~x~0#1 < 0 && 0 != main_~x~0#1 % 2 then main_~x~0#1 % 2 - 2 else main_~x~0#1 % 2));main_~x~0#1 := 2 + main_~x~0#1; 158#L18-2 [2024-10-24 23:49:03,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665939, now seen corresponding path program 1 times [2024-10-24 23:49:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:03,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018163773] [2024-10-24 23:49:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:49:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:49:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018163773] [2024-10-24 23:49:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018163773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:49:03,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:49:03,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:49:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916659440] [2024-10-24 23:49:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:49:03,789 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-24 23:49:03,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 3 times [2024-10-24 23:49:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:49:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687235725] [2024-10-24 23:49:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:49:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:49:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:03,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:49:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:49:03,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:49:03,829 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:49:03,829 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:49:03,829 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:49:03,829 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:49:03,829 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:49:03,829 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,829 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:49:03,830 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:49:03,830 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration4_Loop [2024-10-24 23:49:03,830 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:49:03,830 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:49:03,834 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:03,841 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:03,910 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:49:03,910 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:49:03,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,912 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) [2024-10-24 23:49:03,914 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 [2024-10-24 23:49:03,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:49:03,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:49:03,929 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:49:03,929 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~debug~0#1=0} Honda state: {ULTIMATE.start_main_~debug~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:49:03,940 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 [2024-10-24 23:49:03,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,941 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) [2024-10-24 23:49:03,942 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 [2024-10-24 23:49:03,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:49:03,943 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:49:03,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-24 23:49:03,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:03,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:03,965 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) [2024-10-24 23:49:03,966 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 [2024-10-24 23:49:03,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:49:03,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:49:04,004 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:49:04,011 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 [2024-10-24 23:49:04,012 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:49:04,012 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:49:04,012 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:49:04,012 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:49:04,012 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:49:04,012 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:04,012 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:49:04,012 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:49:04,012 INFO L132 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-CAV2010-Fig1.c_Iteration4_Loop [2024-10-24 23:49:04,012 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:49:04,012 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:49:04,013 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:04,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:49:04,083 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:49:04,083 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:49:04,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:04,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:04,086 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) [2024-10-24 23:49:04,087 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 [2024-10-24 23:49:04,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:49:04,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:49:04,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:49:04,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:49:04,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:49:04,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:49:04,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:49:04,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:49:04,101 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:49:04,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-24 23:49:04,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:04,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:04,112 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) [2024-10-24 23:49:04,113 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 [2024-10-24 23:49:04,114 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-24 23:49:04,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:49:04,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:49:04,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:49:04,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:49:04,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:49:04,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:49:04,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:49:04,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:49:04,133 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:49:04,133 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:49:04,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:49:04,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:49:04,135 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) [2024-10-24 23:49:04,137 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 [2024-10-24 23:49:04,137 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:49:04,137 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:49:04,138 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:49:04,138 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 255 Supporting invariants [] [2024-10-24 23:49:04,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-24 23:49:04,154 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:49:04,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:04,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:49:04,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:04,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:49:04,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:49:04,218 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-24 23:49:04,219 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:04,239 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 7 states. [2024-10-24 23:49:04,241 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 [2024-10-24 23:49:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-10-24 23:49:04,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2024-10-24 23:49:04,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:04,243 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:49:04,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:04,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:49:04,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:04,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:49:04,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:49:04,299 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-24 23:49:04,299 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:04,316 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 7 states. [2024-10-24 23:49:04,317 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 [2024-10-24 23:49:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2024-10-24 23:49:04,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2024-10-24 23:49:04,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:04,319 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:49:04,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:49:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:04,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 23:49:04,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:49:04,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:49:04,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:49:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:49:04,375 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-24 23:49:04,376 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:04,394 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 32 transitions. Complement of second has 6 states. [2024-10-24 23:49:04,394 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 [2024-10-24 23:49:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:04,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2024-10-24 23:49:04,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2024-10-24 23:49:04,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:04,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2024-10-24 23:49:04,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:04,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2024-10-24 23:49:04,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:49:04,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 32 transitions. [2024-10-24 23:49:04,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-24 23:49:04,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 26 transitions. [2024-10-24 23:49:04,398 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-10-24 23:49:04,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-10-24 23:49:04,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2024-10-24 23:49:04,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:49:04,399 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-24 23:49:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2024-10-24 23:49:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 9. [2024-10-24 23:49:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2024-10-24 23:49:04,400 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2024-10-24 23:49:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:49:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 23:49:04,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 23:49:04,401 INFO L87 Difference]: Start difference. First operand 9 states and 12 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:49:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:49:04,417 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2024-10-24 23:49:04,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2024-10-24 23:49:04,418 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:49:04,418 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2024-10-24 23:49:04,418 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-24 23:49:04,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-24 23:49:04,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-24 23:49:04,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-24 23:49:04,419 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:49:04,419 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:49:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 23:49:04,420 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:49:04,420 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-24 23:49:04,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-24 23:49:04,420 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:49:04,420 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-24 23:49:04,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 24.10 11:49:04 BoogieIcfgContainer [2024-10-24 23:49:04,433 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-24 23:49:04,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-24 23:49:04,434 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:49:04,438 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:49:04,438 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:49:04,439 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:49:01" (3/4) ... [2024-10-24 23:49:04,440 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 23:49:04,442 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:49:04,446 INFO L158 Benchmark]: Toolchain (without parser) took 3242.76ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 80.5MB in the beginning and 156.2MB in the end (delta: -75.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:49:04,446 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 151.0MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:49:04,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.03ms. Allocated memory is still 151.0MB. Free memory was 80.3MB in the beginning and 121.2MB in the end (delta: -40.9MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-10-24 23:49:04,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.45ms. Allocated memory is still 151.0MB. Free memory was 121.2MB in the beginning and 119.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:49:04,447 INFO L158 Benchmark]: Boogie Preprocessor took 21.22ms. Allocated memory is still 151.0MB. Free memory was 119.8MB in the beginning and 118.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:49:04,447 INFO L158 Benchmark]: RCFGBuilder took 250.32ms. Allocated memory is still 151.0MB. Free memory was 118.7MB in the beginning and 109.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-24 23:49:04,447 INFO L158 Benchmark]: BuchiAutomizer took 2684.64ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 109.3MB in the beginning and 157.4MB in the end (delta: -48.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:49:04,447 INFO L158 Benchmark]: Witness Printer took 11.28ms. Allocated memory is still 188.7MB. Free memory was 157.4MB in the beginning and 156.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:49:04,453 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2024-10-24 23:49:04,459 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 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 151.0MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.03ms. Allocated memory is still 151.0MB. Free memory was 80.3MB in the beginning and 121.2MB in the end (delta: -40.9MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.45ms. Allocated memory is still 151.0MB. Free memory was 121.2MB in the beginning and 119.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.22ms. Allocated memory is still 151.0MB. Free memory was 119.8MB in the beginning and 118.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.32ms. Allocated memory is still 151.0MB. Free memory was 118.7MB in the beginning and 109.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2684.64ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 109.3MB in the beginning and 157.4MB in the end (delta: -48.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 11.28ms. Allocated memory is still 188.7MB. Free memory was 157.4MB in the beginning and 156.2MB in the end (delta: 1.3MB). 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. One deterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. One nondeterministic module has affine ranking function (255 + ((long) -1 * x)) and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 58 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 46 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp83 ukn100 mio100 lsp100 div346 bol100 ite100 ukn100 eq150 hnf94 smp47 dnf100 smp100 tf105 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-24 23:49:04,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE