./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/termination.prp --file ../../../trunk/examples/svcomp/termination-bwb/or-02.c --full-output --cacsl2boogietranslator.use.bitabs.translation true --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 514d202d 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 ../../../trunk/examples/svcomp/termination-bwb/or-02.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 7598e0946f5292d261b929b388079f7fb794bee1a1e7afaa45add76236cc5a38 --cacsl2boogietranslator.use.bitabs.translation true --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-514d202-m [2024-02-09 14:17:49,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-09 14:17:50,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-02-09 14:17:50,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-09 14:17:50,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-09 14:17:50,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-09 14:17:50,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-09 14:17:50,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-09 14:17:50,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-09 14:17:50,251 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-09 14:17:50,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-09 14:17:50,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-09 14:17:50,251 INFO L153 SettingsManager]: * Use SBE=true [2024-02-09 14:17:50,252 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-09 14:17:50,252 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-09 14:17:50,252 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-09 14:17:50,253 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-09 14:17:50,253 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-09 14:17:50,253 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-09 14:17:50,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-09 14:17:50,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-09 14:17:50,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-09 14:17:50,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-09 14:17:50,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-09 14:17:50,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-09 14:17:50,255 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-09 14:17:50,255 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-09 14:17:50,256 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-09 14:17:50,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-09 14:17:50,256 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-09 14:17:50,256 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-09 14:17:50,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-09 14:17:50,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-09 14:17:50,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-09 14:17:50,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-09 14:17:50,258 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-09 14:17:50,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7598e0946f5292d261b929b388079f7fb794bee1a1e7afaa45add76236cc5a38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2024-02-09 14:17:50,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-09 14:17:50,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-09 14:17:50,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-09 14:17:50,497 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-09 14:17:50,498 INFO L274 PluginConnector]: CDTParser initialized [2024-02-09 14:17:50,499 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-bwb/or-02.c [2024-02-09 14:17:51,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-09 14:17:51,786 INFO L384 CDTParser]: Found 1 translation units. [2024-02-09 14:17:51,787 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-bwb/or-02.c [2024-02-09 14:17:51,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49de86b71/0d82aee3f82e43a5947cc39306015ca7/FLAGf7a9dd546 [2024-02-09 14:17:51,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49de86b71/0d82aee3f82e43a5947cc39306015ca7 [2024-02-09 14:17:51,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-09 14:17:51,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-09 14:17:51,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-09 14:17:51,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-09 14:17:51,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-09 14:17:51,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:51,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8f246e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51, skipping insertion in model container [2024-02-09 14:17:51,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:51,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-09 14:17:51,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 14:17:51,942 INFO L202 MainTranslator]: Completed pre-run [2024-02-09 14:17:51,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 14:17:51,960 INFO L206 MainTranslator]: Completed translation [2024-02-09 14:17:51,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51 WrapperNode [2024-02-09 14:17:51,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-09 14:17:51,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-09 14:17:51,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-09 14:17:51,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-09 14:17:51,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:51,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:51,984 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-02-09 14:17:51,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-09 14:17:51,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-09 14:17:51,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-09 14:17:51,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-09 14:17:51,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:51,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:51,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:52,003 INFO L175 MemorySlicer]: No memory access in input program. [2024-02-09 14:17:52,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:52,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:52,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:52,008 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:52,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:52,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:52,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-09 14:17:52,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-09 14:17:52,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-09 14:17:52,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-09 14:17:52,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (1/1) ... [2024-02-09 14:17:52,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:52,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:52,050 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) [2024-02-09 14:17:52,141 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 [2024-02-09 14:17:52,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-09 14:17:52,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-09 14:17:52,231 INFO L241 CfgBuilder]: Building ICFG [2024-02-09 14:17:52,233 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-09 14:17:52,337 INFO L282 CfgBuilder]: Performing block encoding [2024-02-09 14:17:52,346 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-09 14:17:52,349 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-09 14:17:52,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:17:52 BoogieIcfgContainer [2024-02-09 14:17:52,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-09 14:17:52,351 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-09 14:17:52,351 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-09 14:17:52,357 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-09 14:17:52,358 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:17:52,359 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.02 02:17:51" (1/3) ... [2024-02-09 14:17:52,368 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d5d1e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 02:17:52, skipping insertion in model container [2024-02-09 14:17:52,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:17:52,368 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:17:51" (2/3) ... [2024-02-09 14:17:52,369 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d5d1e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 02:17:52, skipping insertion in model container [2024-02-09 14:17:52,369 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:17:52,369 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:17:52" (3/3) ... [2024-02-09 14:17:52,370 INFO L332 chiAutomizerObserver]: Analyzing ICFG or-02.c [2024-02-09 14:17:52,424 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-09 14:17:52,425 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-09 14:17:52,425 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-09 14:17:52,425 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-09 14:17:52,425 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-09 14:17:52,425 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-09 14:17:52,426 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-09 14:17:52,426 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-02-09 14:17:52,431 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:52,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:17:52,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:17:52,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:17:52,449 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-02-09 14:17:52,449 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-02-09 14:17:52,450 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-02-09 14:17:52,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:52,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:17:52,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:17:52,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:17:52,453 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-02-09 14:17:52,453 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-02-09 14:17:52,460 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~b~0#1, main_~x~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~b~0#1 := 30;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 2#L19-2true [2024-02-09 14:17:52,460 INFO L750 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~x~0#1 > 0); 8#L20true assume 0 == main_~b~0#1 || main_~b~0#1 == 1 + main_~b~0#1;main_#t~nondet1#1 := 1 + main_~b~0#1; 9#L20-4true main_~b~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_~x~0#1 - main_~b~0#1; 2#L19-2true [2024-02-09 14:17:52,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:52,468 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-02-09 14:17:52,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:52,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910875306] [2024-02-09 14:17:52,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:52,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:52,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:52,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:52,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:52,577 INFO L85 PathProgramCache]: Analyzing trace with hash 40819, now seen corresponding path program 1 times [2024-02-09 14:17:52,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:52,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207578072] [2024-02-09 14:17:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:52,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:52,606 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:52,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:52,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:52,622 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2024-02-09 14:17:52,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:52,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269906295] [2024-02-09 14:17:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:52,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:17:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 14:17:52,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-09 14:17:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269906295] [2024-02-09 14:17:52,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269906295] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-09 14:17:52,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-09 14:17:52,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-09 14:17:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394517756] [2024-02-09 14:17:52,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-09 14:17:52,764 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:17:52,764 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:17:52,765 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:17:52,765 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:17:52,765 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-09 14:17:52,765 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:52,765 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:17:52,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:17:52,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-02.c_Iteration1_Loop [2024-02-09 14:17:52,765 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:17:52,766 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:17:52,776 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:52,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:52,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:52,849 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:17:52,850 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-09 14:17:52,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:52,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:52,854 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) [2024-02-09 14:17:52,855 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 [2024-02-09 14:17:52,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-09 14:17:52,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:17:52,882 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 [2024-02-09 14:17:52,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:52,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:52,897 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) [2024-02-09 14:17:52,902 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 [2024-02-09 14:17:52,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-09 14:17:52,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:17:52,926 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-02-09 14:17:52,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-02-09 14:17:52,931 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:17:52,931 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:17:52,931 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:17:52,931 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:17:52,931 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2024-02-09 14:17:52,931 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:52,931 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:17:52,931 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:17:52,931 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-02.c_Iteration1_Loop [2024-02-09 14:17:52,931 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:17:52,931 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:17:52,932 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:52,940 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:52,942 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:52,982 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:17:52,986 INFO L490 LassoAnalysis]: Using template 'affine'. [2024-02-09 14:17:52,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:52,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:52,996 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) [2024-02-09 14:17:52,998 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 [2024-02-09 14:17:52,999 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 [2024-02-09 14:17:53,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-09 14:17:53,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-09 14:17:53,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-09 14:17:53,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-09 14:17:53,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-09 14:17:53,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-09 14:17:53,025 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-09 14:17:53,045 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-02-09 14:17:53,050 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-02-09 14:17:53,050 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-02-09 14:17:53,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:53,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:53,053 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) [2024-02-09 14:17:53,054 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 [2024-02-09 14:17:53,055 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-02-09 14:17:53,055 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-02-09 14:17:53,056 INFO L513 LassoAnalysis]: Proved termination. [2024-02-09 14:17:53,056 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0#1) = -2*ULTIMATE.start_main_~b~0#1 + 1 Supporting invariants [] [2024-02-09 14:17:53,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-02-09 14:17:53,064 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-02-09 14:17:53,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:17:53,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-09 14:17:53,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:17:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:17:53,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-09 14:17:53,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:17:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 14:17:53,213 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 [2024-02-09 14:17:53,214 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 [2024-02-09 14:17:53,217 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:53,284 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 39 transitions. Complement of second has 8 states. [2024-02-09 14:17:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-02-09 14:17:53,290 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) [2024-02-09 14:17:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2024-02-09 14:17:53,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 3 letters. [2024-02-09 14:17:53,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:53,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 5 letters. Loop has 3 letters. [2024-02-09 14:17:53,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:53,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 6 letters. [2024-02-09 14:17:53,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:53,293 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2024-02-09 14:17:53,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:17:53,297 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 13 states and 18 transitions. [2024-02-09 14:17:53,298 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-02-09 14:17:53,298 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-02-09 14:17:53,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2024-02-09 14:17:53,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-02-09 14:17:53,299 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-02-09 14:17:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2024-02-09 14:17:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2024-02-09 14:17:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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) [2024-02-09 14:17:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2024-02-09 14:17:53,317 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2024-02-09 14:17:53,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-09 14:17:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-09 14:17:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-09 14:17:53,320 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-02-09 14:17:53,331 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2024-02-09 14:17:53,331 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2024-02-09 14:17:53,332 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:17:53,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2024-02-09 14:17:53,332 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-02-09 14:17:53,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-02-09 14:17:53,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2024-02-09 14:17:53,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-02-09 14:17:53,333 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-02-09 14:17:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2024-02-09 14:17:53,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-02-09 14:17:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2024-02-09 14:17:53,334 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-02-09 14:17:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-09 14:17:53,335 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2024-02-09 14:17:53,335 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-02-09 14:17:53,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2024-02-09 14:17:53,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:17:53,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:17:53,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:17:53,337 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-02-09 14:17:53,337 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-02-09 14:17:53,337 INFO L748 eck$LassoCheckResult]: Stem: 108#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 109#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~b~0#1, main_~x~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~b~0#1 := 30;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 104#L19-2 assume !!(main_~x~0#1 > 0); 105#L20 assume !(0 == main_~b~0#1 || main_~b~0#1 == 1 + main_~b~0#1); 106#L20-2 assume !(0 == 1 + main_~b~0#1);assume (main_~b~0#1 < 0 && 1 + main_~b~0#1 >= 0) || main_#t~nondet1#1 >= 1 + main_~b~0#1;assume (main_~b~0#1 >= 0 && 1 + main_~b~0#1 < 0) || main_#t~nondet1#1 >= main_~b~0#1;assume (main_~b~0#1 < 0 || 1 + main_~b~0#1 < 0) || main_#t~nondet1#1 <= main_~b~0#1 + (1 + main_~b~0#1);assume (main_~b~0#1 >= 0 && 1 + main_~b~0#1 >= 0) || main_#t~nondet1#1 < 0;assume main_#t~nondet1#1 <= 2147483647; 107#L20-4 [2024-02-09 14:17:53,338 INFO L750 eck$LassoCheckResult]: Loop: 107#L20-4 main_~b~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_~x~0#1 - main_~b~0#1; 110#L19-2 assume !!(main_~x~0#1 > 0); 112#L20 assume 0 == main_~b~0#1 || main_~b~0#1 == 1 + main_~b~0#1;main_#t~nondet1#1 := 1 + main_~b~0#1; 107#L20-4 [2024-02-09 14:17:53,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash 28699821, now seen corresponding path program 1 times [2024-02-09 14:17:53,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:53,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679437354] [2024-02-09 14:17:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:53,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:53,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash 52249, now seen corresponding path program 2 times [2024-02-09 14:17:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:53,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853700552] [2024-02-09 14:17:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:53,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash 297897965, now seen corresponding path program 1 times [2024-02-09 14:17:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067539709] [2024-02-09 14:17:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:53,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:17:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 14:17:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-09 14:17:53,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067539709] [2024-02-09 14:17:53,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067539709] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-09 14:17:53,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-09 14:17:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-09 14:17:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901623712] [2024-02-09 14:17:53,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-09 14:17:53,458 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:17:53,459 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:17:53,459 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:17:53,459 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:17:53,459 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-09 14:17:53,459 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:53,459 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:17:53,459 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:17:53,459 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-02.c_Iteration2_Loop [2024-02-09 14:17:53,459 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:17:53,460 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:17:53,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:53,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:53,469 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:53,512 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:17:53,512 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-09 14:17:53,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:53,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:53,529 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) [2024-02-09 14:17:53,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-09 14:17:53,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:17:53,568 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 [2024-02-09 14:17:53,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-02-09 14:17:53,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:53,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:53,602 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) [2024-02-09 14:17:53,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-09 14:17:53,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:17:53,618 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 [2024-02-09 14:17:53,626 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-02-09 14:17:53,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-02-09 14:17:53,632 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:17:53,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:17:53,633 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:17:53,633 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:17:53,633 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2024-02-09 14:17:53,633 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:53,633 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:17:53,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:17:53,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-02.c_Iteration2_Loop [2024-02-09 14:17:53,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:17:53,633 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:17:53,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:53,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:53,643 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:53,664 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:17:53,664 INFO L490 LassoAnalysis]: Using template 'affine'. [2024-02-09 14:17:53,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:53,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:53,681 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) [2024-02-09 14:17:53,712 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 [2024-02-09 14:17:53,713 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 [2024-02-09 14:17:53,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-09 14:17:53,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-09 14:17:53,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-09 14:17:53,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-09 14:17:53,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-09 14:17:53,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-09 14:17:53,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-09 14:17:53,744 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-02-09 14:17:53,746 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-02-09 14:17:53,746 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-02-09 14:17:53,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:53,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:53,747 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) [2024-02-09 14:17:53,766 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 [2024-02-09 14:17:53,769 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-02-09 14:17:53,769 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-02-09 14:17:53,769 INFO L513 LassoAnalysis]: Proved termination. [2024-02-09 14:17:53,769 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_#t~nondet1#1) = -2*ULTIMATE.start_main_#t~nondet1#1 + 1 Supporting invariants [] [2024-02-09 14:17:53,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-02-09 14:17:53,778 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-02-09 14:17:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:17:53,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-09 14:17:53,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:17:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:17:53,836 WARN L260 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-09 14:17:53,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:17:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 14:17:53,853 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 [2024-02-09 14:17:53,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:53,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 21 transitions. Complement of second has 6 states. [2024-02-09 14:17:53,897 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 [2024-02-09 14:17:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2024-02-09 14:17:53,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 3 letters. [2024-02-09 14:17:53,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:53,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 8 letters. Loop has 3 letters. [2024-02-09 14:17:53,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:53,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 6 letters. [2024-02-09 14:17:53,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:53,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2024-02-09 14:17:53,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:17:53,905 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 21 transitions. [2024-02-09 14:17:53,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-02-09 14:17:53,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-02-09 14:17:53,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2024-02-09 14:17:53,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-02-09 14:17:53,905 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-02-09 14:17:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2024-02-09 14:17:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-02-09 14:17:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 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) [2024-02-09 14:17:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2024-02-09 14:17:53,914 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2024-02-09 14:17:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-09 14:17:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-09 14:17:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-09 14:17:53,915 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-02-09 14:17:53,942 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2024-02-09 14:17:53,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2024-02-09 14:17:53,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:17:53,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 10 transitions. [2024-02-09 14:17:53,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-02-09 14:17:53,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-02-09 14:17:53,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 10 transitions. [2024-02-09 14:17:53,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-02-09 14:17:53,943 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-02-09 14:17:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 10 transitions. [2024-02-09 14:17:53,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 6. [2024-02-09 14:17:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 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) [2024-02-09 14:17:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2024-02-09 14:17:53,944 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 6 transitions. [2024-02-09 14:17:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-09 14:17:53,945 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2024-02-09 14:17:53,946 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-02-09 14:17:53,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2024-02-09 14:17:53,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:17:53,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:17:53,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:17:53,946 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-02-09 14:17:53,946 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-02-09 14:17:53,947 INFO L748 eck$LassoCheckResult]: Stem: 216#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 217#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~b~0#1, main_~x~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~b~0#1 := 30;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 212#L19-2 [2024-02-09 14:17:53,947 INFO L750 eck$LassoCheckResult]: Loop: 212#L19-2 assume !!(main_~x~0#1 > 0); 213#L20 assume !(0 == main_~b~0#1 || main_~b~0#1 == 1 + main_~b~0#1); 214#L20-2 assume !(0 == 1 + main_~b~0#1);assume (main_~b~0#1 < 0 && 1 + main_~b~0#1 >= 0) || main_#t~nondet1#1 >= 1 + main_~b~0#1;assume (main_~b~0#1 >= 0 && 1 + main_~b~0#1 < 0) || main_#t~nondet1#1 >= main_~b~0#1;assume (main_~b~0#1 < 0 || 1 + main_~b~0#1 < 0) || main_#t~nondet1#1 <= main_~b~0#1 + (1 + main_~b~0#1);assume (main_~b~0#1 >= 0 && 1 + main_~b~0#1 >= 0) || main_#t~nondet1#1 < 0;assume main_#t~nondet1#1 <= 2147483647; 215#L20-4 main_~b~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_~x~0#1 - main_~b~0#1; 212#L19-2 [2024-02-09 14:17:53,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-02-09 14:17:53,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:53,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438600276] [2024-02-09 14:17:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,950 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:53,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1267272, now seen corresponding path program 1 times [2024-02-09 14:17:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:53,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59318680] [2024-02-09 14:17:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:53,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:53,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash 889694474, now seen corresponding path program 1 times [2024-02-09 14:17:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:17:53,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546508250] [2024-02-09 14:17:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:17:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:17:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:17:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:17:53,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:17:54,067 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:17:54,067 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:17:54,068 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:17:54,068 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:17:54,068 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-09 14:17:54,068 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:54,068 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:17:54,068 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:17:54,068 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-02.c_Iteration3_Loop [2024-02-09 14:17:54,068 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:17:54,068 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:17:54,069 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:54,181 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:17:54,181 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-09 14:17:54,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:54,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:54,192 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) [2024-02-09 14:17:54,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-09 14:17:54,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:17:54,204 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 [2024-02-09 14:17:54,222 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 [2024-02-09 14:17:54,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:54,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:54,223 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) [2024-02-09 14:17:54,248 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 [2024-02-09 14:17:54,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-09 14:17:54,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:17:54,280 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-02-09 14:17:54,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-02-09 14:17:54,285 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:17:54,285 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:17:54,285 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:17:54,285 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:17:54,285 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2024-02-09 14:17:54,285 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:54,285 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:17:54,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:17:54,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: or-02.c_Iteration3_Loop [2024-02-09 14:17:54,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:17:54,285 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:17:54,286 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-02-09 14:17:54,447 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:17:54,447 INFO L490 LassoAnalysis]: Using template 'affine'. [2024-02-09 14:17:54,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:54,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:54,449 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) [2024-02-09 14:17:54,467 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 [2024-02-09 14:17:54,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-09 14:17:54,475 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-09 14:17:54,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-09 14:17:54,475 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-02-09 14:17:54,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-09 14:17:54,479 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 [2024-02-09 14:17:54,481 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2024-02-09 14:17:54,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-09 14:17:54,497 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-02-09 14:17:54,501 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-02-09 14:17:54,501 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-02-09 14:17:54,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:17:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:17:54,503 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) [2024-02-09 14:17:54,556 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 [2024-02-09 14:17:54,571 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 [2024-02-09 14:17:54,571 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-02-09 14:17:54,590 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-02-09 14:17:54,590 INFO L513 LassoAnalysis]: Proved termination. [2024-02-09 14:17:54,590 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0#1) = -2*ULTIMATE.start_main_~b~0#1 + 4294967293 Supporting invariants [] [2024-02-09 14:17:54,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-02-09 14:17:54,609 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-02-09 14:17:54,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:17:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:17:54,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-09 14:17:54,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:17:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:17:54,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-09 14:17:54,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:17:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 14:17:54,672 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 [2024-02-09 14:17:54,672 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 6 transitions. cyclomatic complexity: 1 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:54,695 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 6 transitions. cyclomatic complexity: 1. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 11 transitions. Complement of second has 6 states. [2024-02-09 14:17:54,696 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 [2024-02-09 14:17:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:17:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2024-02-09 14:17:54,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2024-02-09 14:17:54,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:54,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 4 letters. [2024-02-09 14:17:54,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:54,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 8 letters. [2024-02-09 14:17:54,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:17:54,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2024-02-09 14:17:54,699 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-02-09 14:17:54,699 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2024-02-09 14:17:54,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-02-09 14:17:54,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-02-09 14:17:54,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-02-09 14:17:54,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-02-09 14:17:54,700 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-02-09 14:17:54,700 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-02-09 14:17:54,700 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-02-09 14:17:54,700 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-02-09 14:17:54,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-02-09 14:17:54,700 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-02-09 14:17:54,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-02-09 14:17:54,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.02 02:17:54 BoogieIcfgContainer [2024-02-09 14:17:54,706 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-02-09 14:17:54,707 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-02-09 14:17:54,707 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-02-09 14:17:54,707 INFO L274 PluginConnector]: Witness Printer initialized [2024-02-09 14:17:54,707 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:17:52" (3/4) ... [2024-02-09 14:17:54,708 INFO L140 WitnessPrinter]: No result that supports witness generation found [2024-02-09 14:17:54,709 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-02-09 14:17:54,710 INFO L158 Benchmark]: Toolchain (without parser) took 2905.20ms. Allocated memory is still 178.3MB. Free memory was 111.2MB in the beginning and 136.0MB in the end (delta: -24.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-09 14:17:54,713 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-09 14:17:54,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.89ms. Allocated memory is still 178.3MB. Free memory was 111.0MB in the beginning and 101.3MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-02-09 14:17:54,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.80ms. Allocated memory is still 178.3MB. Free memory was 101.3MB in the beginning and 100.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-09 14:17:54,713 INFO L158 Benchmark]: Boogie Preprocessor took 24.99ms. Allocated memory is still 178.3MB. Free memory was 100.0MB in the beginning and 98.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-09 14:17:54,714 INFO L158 Benchmark]: RCFGBuilder took 339.50ms. Allocated memory is still 178.3MB. Free memory was 98.4MB in the beginning and 143.8MB in the end (delta: -45.3MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-02-09 14:17:54,715 INFO L158 Benchmark]: BuchiAutomizer took 2355.49ms. Allocated memory is still 178.3MB. Free memory was 143.8MB in the beginning and 137.0MB in the end (delta: 6.7MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2024-02-09 14:17:54,719 INFO L158 Benchmark]: Witness Printer took 2.57ms. Allocated memory is still 178.3MB. Free memory was 137.0MB in the beginning and 136.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-09 14:17:54,722 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.89ms. Allocated memory is still 178.3MB. Free memory was 111.0MB in the beginning and 101.3MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.80ms. Allocated memory is still 178.3MB. Free memory was 101.3MB in the beginning and 100.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.99ms. Allocated memory is still 178.3MB. Free memory was 100.0MB in the beginning and 98.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.50ms. Allocated memory is still 178.3MB. Free memory was 98.4MB in the beginning and 143.8MB in the end (delta: -45.3MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 2355.49ms. Allocated memory is still 178.3MB. Free memory was 143.8MB in the beginning and 137.0MB in the end (delta: 6.7MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Witness Printer took 2.57ms. Allocated memory is still 178.3MB. Free memory was 137.0MB in the beginning and 136.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function ((-2 * b) + 1) and consists of 5 locations. One deterministic module has affine ranking function null and consists of 4 locations. One deterministic module has affine ranking function ((-2 * b) + 4294967293) and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 25 mSDtfsCounter, 59 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax100 hnf100 lsp69 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf92 smp100 dnf157 smp81 tf110 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 142ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 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! [2024-02-09 14:17:54,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-02-09 14:17:54,942 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