./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/termination.prp --file ../../../trunk/examples/svcomp/termination-bwb/and-04.c --full-output --cacsl2boogietranslator.use.bitabs.translation false --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/and-04.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 3a784e11bf73a2acfc7dcf1addce2ecbb061bf2a055ac7c7789f5cd2a0fe09f1 --cacsl2boogietranslator.use.bitabs.translation false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-514d202-m [2024-02-09 14:18:20,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-09 14:18:21,037 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-02-09 14:18:21,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-09 14:18:21,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-09 14:18:21,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-09 14:18:21,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-09 14:18:21,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-09 14:18:21,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-09 14:18:21,066 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-09 14:18:21,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-09 14:18:21,067 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-09 14:18:21,067 INFO L153 SettingsManager]: * Use SBE=true [2024-02-09 14:18:21,071 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-09 14:18:21,071 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-09 14:18:21,071 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-09 14:18:21,072 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-09 14:18:21,073 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-09 14:18:21,073 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-09 14:18:21,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-09 14:18:21,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-09 14:18:21,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-09 14:18:21,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-09 14:18:21,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-09 14:18:21,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-09 14:18:21,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-09 14:18:21,075 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-09 14:18:21,076 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-09 14:18:21,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-09 14:18:21,076 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-09 14:18:21,077 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-09 14:18:21,078 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-09 14:18:21,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-09 14:18:21,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-09 14:18:21,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-09 14:18:21,079 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-09 14:18:21,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a784e11bf73a2acfc7dcf1addce2ecbb061bf2a055ac7c7789f5cd2a0fe09f1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2024-02-09 14:18:21,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-09 14:18:21,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-09 14:18:21,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-09 14:18:21,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-09 14:18:21,372 INFO L274 PluginConnector]: CDTParser initialized [2024-02-09 14:18:21,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-bwb/and-04.c [2024-02-09 14:18:22,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-09 14:18:22,775 INFO L384 CDTParser]: Found 1 translation units. [2024-02-09 14:18:22,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-bwb/and-04.c [2024-02-09 14:18:22,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa9471d6/1b46bfaf4d634e0dbd935aeb0cc67710/FLAG44fd50cb1 [2024-02-09 14:18:22,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa9471d6/1b46bfaf4d634e0dbd935aeb0cc67710 [2024-02-09 14:18:22,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-09 14:18:22,812 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-09 14:18:22,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-09 14:18:22,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-09 14:18:22,821 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-09 14:18:22,822 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 02:18:22" (1/1) ... [2024-02-09 14:18:22,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728712f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:22, skipping insertion in model container [2024-02-09 14:18:22,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 02:18:22" (1/1) ... [2024-02-09 14:18:22,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-09 14:18:22,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 14:18:23,012 INFO L202 MainTranslator]: Completed pre-run [2024-02-09 14:18:23,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 14:18:23,040 INFO L206 MainTranslator]: Completed translation [2024-02-09 14:18:23,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23 WrapperNode [2024-02-09 14:18:23,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-09 14:18:23,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-09 14:18:23,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-09 14:18:23,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-09 14:18:23,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,070 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2024-02-09 14:18:23,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-09 14:18:23,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-09 14:18:23,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-09 14:18:23,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-09 14:18:23,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,088 INFO L175 MemorySlicer]: No memory access in input program. [2024-02-09 14:18:23,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-09 14:18:23,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-09 14:18:23,097 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-09 14:18:23,097 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-09 14:18:23,098 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (1/1) ... [2024-02-09 14:18:23,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:23,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:23,131 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 14:18:23,133 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 14:18:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-09 14:18:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-09 14:18:23,255 INFO L241 CfgBuilder]: Building ICFG [2024-02-09 14:18:23,258 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-09 14:18:23,363 INFO L282 CfgBuilder]: Performing block encoding [2024-02-09 14:18:23,374 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-09 14:18:23,375 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-09 14:18:23,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:18:23 BoogieIcfgContainer [2024-02-09 14:18:23,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-09 14:18:23,380 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-09 14:18:23,381 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-09 14:18:23,385 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-09 14:18:23,385 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:18:23,386 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.02 02:18:22" (1/3) ... [2024-02-09 14:18:23,388 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17eee251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 02:18:23, skipping insertion in model container [2024-02-09 14:18:23,388 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:18:23,388 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 02:18:23" (2/3) ... [2024-02-09 14:18:23,390 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17eee251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 02:18:23, skipping insertion in model container [2024-02-09 14:18:23,390 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 14:18:23,391 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:18:23" (3/3) ... [2024-02-09 14:18:23,392 INFO L332 chiAutomizerObserver]: Analyzing ICFG and-04.c [2024-02-09 14:18:23,447 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-09 14:18:23,447 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-09 14:18:23,448 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-09 14:18:23,448 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-09 14:18:23,448 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-09 14:18:23,448 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-09 14:18:23,448 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-09 14:18:23,454 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-02-09 14:18:23,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:23,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-02-09 14:18:23,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:18:23,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:18:23,480 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-02-09 14:18:23,480 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 14:18:23,481 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-02-09 14:18:23,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:23,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-02-09 14:18:23,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:18:23,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:18:23,482 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-02-09 14:18:23,482 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 14:18:23,488 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~ret1#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L16-2true [2024-02-09 14:18:23,489 INFO L750 eck$LassoCheckResult]: Loop: 6#L16-2true assume !!(main_~x~0#1 > 5); 2#L16true assume !(10 != main_~x~0#1);main_~x~0#1 := main_~x~0#1 - 1; 6#L16-2true [2024-02-09 14:18:23,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-02-09 14:18:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:23,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341860727] [2024-02-09 14:18:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:23,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:23,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:23,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:23,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:23,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2024-02-09 14:18:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:23,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837032629] [2024-02-09 14:18:23,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:23,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:23,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:23,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:23,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:23,615 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2024-02-09 14:18:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:23,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738549415] [2024-02-09 14:18:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:23,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:23,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:23,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:23,682 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:18:23,683 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:18:23,683 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:18:23,683 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:18:23,683 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-09 14:18:23,684 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:23,684 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:18:23,684 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:18:23,684 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-04.c_Iteration1_Loop [2024-02-09 14:18:23,684 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:18:23,685 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:18:23,698 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 14:18:23,741 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:18:23,742 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-09 14:18:23,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:23,865 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 14:18:23,866 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 14:18:23,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-09 14:18:23,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:18:23,958 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 14:18:23,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:23,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:23,960 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 14:18:23,962 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 14:18:23,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-09 14:18:23,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:18:23,984 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-02-09 14:18:23,991 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 14:18:23,991 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:18:23,991 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:18:23,991 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:18:23,992 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:18:23,992 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2024-02-09 14:18:23,992 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:23,992 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:18:23,992 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:18:23,992 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-04.c_Iteration1_Loop [2024-02-09 14:18:23,992 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:18:23,992 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:18:23,994 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 14:18:24,017 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:18:24,021 INFO L490 LassoAnalysis]: Using template 'affine'. [2024-02-09 14:18:24,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,024 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 14:18:24,026 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 14:18:24,027 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 14:18:24,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-09 14:18:24,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-09 14:18:24,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-09 14:18:24,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-09 14:18:24,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-09 14:18:24,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-09 14:18:24,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-09 14:18:24,057 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-02-09 14:18:24,064 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-02-09 14:18:24,064 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-02-09 14:18:24,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,125 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 14:18:24,126 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 14:18:24,148 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-02-09 14:18:24,148 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-02-09 14:18:24,149 INFO L513 LassoAnalysis]: Proved termination. [2024-02-09 14:18:24,149 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-02-09 14:18:24,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-02-09 14:18:24,157 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-02-09 14:18:24,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:24,201 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-09 14:18:24,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:24,214 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-09 14:18:24,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:24,221 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 14:18:24,255 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-02-09 14:18:24,257 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:24,292 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 28 transitions. Complement of second has 6 states. [2024-02-09 14:18:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-02-09 14:18:24,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2024-02-09 14:18:24,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 2 letters. [2024-02-09 14:18:24,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:24,307 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2024-02-09 14:18:24,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:24,309 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2024-02-09 14:18:24,309 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:24,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2024-02-09 14:18:24,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-02-09 14:18:24,315 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2024-02-09 14:18:24,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-02-09 14:18:24,316 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-02-09 14:18:24,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-02-09 14:18:24,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-02-09 14:18:24,317 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-02-09 14:18:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-02-09 14:18:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-02-09 14:18:24,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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 14:18:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2024-02-09 14:18:24,334 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-02-09 14:18:24,334 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-02-09 14:18:24,334 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-02-09 14:18:24,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2024-02-09 14:18:24,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-02-09 14:18:24,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:18:24,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:18:24,335 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-02-09 14:18:24,335 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 14:18:24,336 INFO L748 eck$LassoCheckResult]: Stem: 67#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 68#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~ret1#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 70#L16-2 assume !!(main_~x~0#1 > 5); 63#L16 assume 10 != main_~x~0#1;main_~x~0#1 := main_#t~ret1#1;havoc main_#t~ret1#1; 64#L16-2 [2024-02-09 14:18:24,336 INFO L750 eck$LassoCheckResult]: Loop: 64#L16-2 assume !!(main_~x~0#1 > 5); 69#L16 assume !(10 != main_~x~0#1);main_~x~0#1 := main_~x~0#1 - 1; 64#L16-2 [2024-02-09 14:18:24,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-02-09 14:18:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:24,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452149572] [2024-02-09 14:18:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:24,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2024-02-09 14:18:24,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:24,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356845334] [2024-02-09 14:18:24,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:24,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:24,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:24,355 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2024-02-09 14:18:24,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:24,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967724769] [2024-02-09 14:18:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:24,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:24,404 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:18:24,405 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:18:24,405 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:18:24,405 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:18:24,405 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-09 14:18:24,405 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,405 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:18:24,405 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:18:24,405 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-04.c_Iteration2_Loop [2024-02-09 14:18:24,406 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:18:24,406 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:18:24,407 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 14:18:24,433 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:18:24,433 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-09 14:18:24,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,436 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 14:18:24,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-09 14:18:24,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:18:24,452 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 14:18:24,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-02-09 14:18:24,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,458 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 14:18:24,460 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 14:18:24,497 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-09 14:18:24,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:18:24,520 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-02-09 14:18:24,527 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 14:18:24,527 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:18:24,528 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:18:24,528 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:18:24,528 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:18:24,528 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2024-02-09 14:18:24,528 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,528 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:18:24,528 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:18:24,528 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-04.c_Iteration2_Loop [2024-02-09 14:18:24,528 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:18:24,528 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:18:24,529 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 14:18:24,555 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:18:24,555 INFO L490 LassoAnalysis]: Using template 'affine'. [2024-02-09 14:18:24,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,557 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 14:18:24,562 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 14:18:24,568 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 14:18:24,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-09 14:18:24,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-09 14:18:24,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-09 14:18:24,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-09 14:18:24,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-09 14:18:24,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-09 14:18:24,573 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-09 14:18:24,596 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-02-09 14:18:24,599 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-02-09 14:18:24,599 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-02-09 14:18:24,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,718 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 14:18:24,721 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 14:18:24,721 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-02-09 14:18:24,721 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-02-09 14:18:24,721 INFO L513 LassoAnalysis]: Proved termination. [2024-02-09 14:18:24,721 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-02-09 14:18:24,730 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 14:18:24,731 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-02-09 14:18:24,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:24,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-09 14:18:24,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:24,766 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-09 14:18:24,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:24,769 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 14:18:24,770 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-02-09 14:18:24,770 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 14:18:24,788 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 12 states and 17 transitions. Complement of second has 5 states. [2024-02-09 14:18:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-02-09 14:18:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 14:18:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-02-09 14:18:24,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-02-09 14:18:24,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:24,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-02-09 14:18:24,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:24,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2024-02-09 14:18:24,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:24,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2024-02-09 14:18:24,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-02-09 14:18:24,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2024-02-09 14:18:24,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-02-09 14:18:24,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-02-09 14:18:24,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2024-02-09 14:18:24,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-02-09 14:18:24,797 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-02-09 14:18:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2024-02-09 14:18:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-02-09 14:18:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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 14:18:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2024-02-09 14:18:24,800 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-02-09 14:18:24,800 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-02-09 14:18:24,801 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-02-09 14:18:24,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2024-02-09 14:18:24,801 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-02-09 14:18:24,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:18:24,802 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:18:24,802 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2024-02-09 14:18:24,802 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 14:18:24,803 INFO L748 eck$LassoCheckResult]: Stem: 126#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 127#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~ret1#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 128#L16-2 assume !!(main_~x~0#1 > 5); 120#L16 assume 10 != main_~x~0#1;main_~x~0#1 := main_#t~ret1#1;havoc main_#t~ret1#1; 121#L16-2 assume !!(main_~x~0#1 > 5); 129#L16 assume 10 != main_~x~0#1;main_~x~0#1 := main_#t~ret1#1;havoc main_#t~ret1#1; 124#L16-2 [2024-02-09 14:18:24,803 INFO L750 eck$LassoCheckResult]: Loop: 124#L16-2 assume !!(main_~x~0#1 > 5); 125#L16 assume !(10 != main_~x~0#1);main_~x~0#1 := main_~x~0#1 - 1; 124#L16-2 [2024-02-09 14:18:24,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash 889692233, now seen corresponding path program 2 times [2024-02-09 14:18:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:24,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090540668] [2024-02-09 14:18:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:24,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:24,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2024-02-09 14:18:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:24,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394126153] [2024-02-09 14:18:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:24,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:24,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 295744366, now seen corresponding path program 2 times [2024-02-09 14:18:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219764052] [2024-02-09 14:18:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:24,835 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:24,855 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:18:24,855 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:18:24,855 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:18:24,855 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:18:24,856 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2024-02-09 14:18:24,856 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,856 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:18:24,856 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:18:24,856 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-04.c_Iteration3_Loop [2024-02-09 14:18:24,856 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:18:24,856 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:18:24,857 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 14:18:24,877 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:18:24,877 INFO L404 LassoAnalysis]: Checking for nontermination... [2024-02-09 14:18:24,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,881 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 14:18:24,896 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 14:18:24,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-02-09 14:18:24,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:18:24,923 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 14:18:24,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,928 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 14:18:24,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-02-09 14:18:24,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-02-09 14:18:24,949 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 14:18:24,960 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-02-09 14:18:24,964 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 14:18:24,964 INFO L210 LassoAnalysis]: Preferences: [2024-02-09 14:18:24,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2024-02-09 14:18:24,965 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-02-09 14:18:24,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2024-02-09 14:18:24,965 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2024-02-09 14:18:24,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2024-02-09 14:18:24,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2024-02-09 14:18:24,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-04.c_Iteration3_Loop [2024-02-09 14:18:24,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2024-02-09 14:18:24,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2024-02-09 14:18:24,966 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 14:18:24,991 INFO L294 LassoAnalysis]: Preprocessing complete. [2024-02-09 14:18:24,991 INFO L490 LassoAnalysis]: Using template 'affine'. [2024-02-09 14:18:24,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:24,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:24,998 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 14:18:25,002 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 14:18:25,002 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 14:18:25,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-02-09 14:18:25,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-02-09 14:18:25,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-02-09 14:18:25,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-02-09 14:18:25,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-02-09 14:18:25,018 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-02-09 14:18:25,018 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-02-09 14:18:25,044 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-02-09 14:18:25,047 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-02-09 14:18:25,047 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-02-09 14:18:25,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 14:18:25,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 14:18:25,050 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 14:18:25,052 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-02-09 14:18:25,052 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-02-09 14:18:25,052 INFO L513 LassoAnalysis]: Proved termination. [2024-02-09 14:18:25,053 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-02-09 14:18:25,060 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 14:18:25,061 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 14:18:25,062 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-02-09 14:18:25,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:25,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-09 14:18:25,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:25,095 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-09 14:18:25,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:25,099 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 14:18:25,099 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-02-09 14:18:25,100 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:25,139 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 21 transitions. Complement of second has 5 states. [2024-02-09 14:18:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-02-09 14:18:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-02-09 14:18:25,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-02-09 14:18:25,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:25,143 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-02-09 14:18:25,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:25,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-09 14:18:25,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:25,175 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-09 14:18:25,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:25,178 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 14:18:25,178 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2024-02-09 14:18:25,179 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:25,192 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 21 transitions. Complement of second has 5 states. [2024-02-09 14:18:25,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-02-09 14:18:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-02-09 14:18:25,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-02-09 14:18:25,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:25,195 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-02-09 14:18:25,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:25,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2024-02-09 14:18:25,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 14:18:25,225 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-09 14:18:25,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-09 14:18:25,227 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 14:18:25,228 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2024-02-09 14:18:25,228 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:25,235 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 24 transitions. Complement of second has 4 states. [2024-02-09 14:18:25,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-02-09 14:18:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-09 14:18:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2024-02-09 14:18:25,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2024-02-09 14:18:25,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:25,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2024-02-09 14:18:25,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:25,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2024-02-09 14:18:25,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-02-09 14:18:25,236 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2024-02-09 14:18:25,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:18:25,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2024-02-09 14:18:25,237 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2024-02-09 14:18:25,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-02-09 14:18:25,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2024-02-09 14:18:25,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-02-09 14:18:25,238 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2024-02-09 14:18:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2024-02-09 14:18:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2024-02-09 14:18:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) 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 14:18:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2024-02-09 14:18:25,239 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 8 transitions. [2024-02-09 14:18:25,239 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2024-02-09 14:18:25,239 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-02-09 14:18:25,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2024-02-09 14:18:25,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-02-09 14:18:25,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 14:18:25,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 14:18:25,239 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-02-09 14:18:25,239 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-02-09 14:18:25,240 INFO L748 eck$LassoCheckResult]: Stem: 278#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 279#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~ret1#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 275#L16-2 [2024-02-09 14:18:25,240 INFO L750 eck$LassoCheckResult]: Loop: 275#L16-2 assume !!(main_~x~0#1 > 5); 274#L16 assume 10 != main_~x~0#1;main_~x~0#1 := main_#t~ret1#1;havoc main_#t~ret1#1; 275#L16-2 [2024-02-09 14:18:25,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-02-09 14:18:25,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:25,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052409000] [2024-02-09 14:18:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:25,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:25,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:25,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:25,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:25,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2024-02-09 14:18:25,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:25,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9288662] [2024-02-09 14:18:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:25,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:25,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:25,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:25,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 14:18:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2024-02-09 14:18:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 14:18:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927917720] [2024-02-09 14:18:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 14:18:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 14:18:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:25,249 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:25,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 14:18:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:25,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 14:18:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 14:18:25,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.02 02:18:25 BoogieIcfgContainer [2024-02-09 14:18:25,305 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-02-09 14:18:25,305 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-02-09 14:18:25,305 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-02-09 14:18:25,305 INFO L274 PluginConnector]: Witness Printer initialized [2024-02-09 14:18:25,306 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:18:23" (3/4) ... [2024-02-09 14:18:25,307 INFO L140 WitnessPrinter]: No result that supports witness generation found [2024-02-09 14:18:25,307 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-02-09 14:18:25,308 INFO L158 Benchmark]: Toolchain (without parser) took 2495.85ms. Allocated memory is still 174.1MB. Free memory was 118.1MB in the beginning and 89.3MB in the end (delta: 28.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2024-02-09 14:18:25,308 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 174.1MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-09 14:18:25,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.52ms. Allocated memory is still 174.1MB. Free memory was 118.1MB in the beginning and 107.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-02-09 14:18:25,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.82ms. Allocated memory is still 174.1MB. Free memory was 107.6MB in the beginning and 106.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-09 14:18:25,309 INFO L158 Benchmark]: Boogie Preprocessor took 24.15ms. Allocated memory is still 174.1MB. Free memory was 106.5MB in the beginning and 104.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-09 14:18:25,310 INFO L158 Benchmark]: RCFGBuilder took 278.79ms. Allocated memory is still 174.1MB. Free memory was 104.9MB in the beginning and 97.1MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-02-09 14:18:25,310 INFO L158 Benchmark]: BuchiAutomizer took 1924.66ms. Allocated memory is still 174.1MB. Free memory was 97.0MB in the beginning and 89.3MB in the end (delta: 7.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2024-02-09 14:18:25,310 INFO L158 Benchmark]: Witness Printer took 2.26ms. Allocated memory is still 174.1MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-09 14:18:25,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 174.1MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.52ms. Allocated memory is still 174.1MB. Free memory was 118.1MB in the beginning and 107.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.82ms. Allocated memory is still 174.1MB. Free memory was 107.6MB in the beginning and 106.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.15ms. Allocated memory is still 174.1MB. Free memory was 106.5MB in the beginning and 104.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 278.79ms. Allocated memory is still 174.1MB. Free memory was 104.9MB in the beginning and 97.1MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1924.66ms. Allocated memory is still 174.1MB. Free memory was 97.0MB in the beginning and 89.3MB in the end (delta: 7.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 2.26ms. Allocated memory is still 174.1MB. Free memory is still 89.3MB. 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic) and one module whose termination is unknown.One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 24 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital8 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq200 hnf87 smp100 dnf100 smp100 tf114 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 126ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Unable to decide termination Buchi Automizer cannot decide termination for the following lasso because it contains the following overapproximations. Overapproximations C: x&(x-1) [17] (Reason bitwise operation) Lasso Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~ret1#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;" Loop: "assume !!(main_~x~0#1 > 5);" "assume 10 != main_~x~0#1;main_~x~0#1 := main_#t~ret1#1;havoc main_#t~ret1#1;" RESULT: Ultimate could not prove your program: unable to determine termination [2024-02-09 14:18:25,336 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 14:18:25,527 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 14:18:25,727 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 14:18:25,932 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 Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN