./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-bwb/or-05.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-bwb/or-05.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 c3769a7b9199e4d3a1d3d7ebad63ad6175b11f31d08bb9cf3238c1849c9b4724 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:51:32,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:51:32,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-12 20:51:32,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:51:32,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:51:32,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:51:32,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:51:32,417 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:51:32,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:51:32,419 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:51:32,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:51:32,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:51:32,420 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:51:32,422 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-12 20:51:32,422 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-12 20:51:32,423 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-12 20:51:32,423 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-12 20:51:32,423 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-12 20:51:32,424 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-12 20:51:32,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:51:32,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-12 20:51:32,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:51:32,428 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:51:32,428 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-12 20:51:32,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-12 20:51:32,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-12 20:51:32,429 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:51:32,429 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:51:32,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:51:32,430 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-12 20:51:32,430 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:51:32,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:51:32,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:51:32,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:51:32,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:51:32,432 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-12 20:51:32,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3769a7b9199e4d3a1d3d7ebad63ad6175b11f31d08bb9cf3238c1849c9b4724 [2024-11-12 20:51:32,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:51:32,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:51:32,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:51:32,730 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:51:32,731 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:51:32,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-bwb/or-05.c [2024-11-12 20:51:34,139 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:51:34,307 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:51:34,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-bwb/or-05.c [2024-11-12 20:51:34,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe523181/728e1ee54aa9431cbd283451fa3c021b/FLAG2291f0882 [2024-11-12 20:51:34,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe523181/728e1ee54aa9431cbd283451fa3c021b [2024-11-12 20:51:34,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:51:34,344 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:51:34,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:51:34,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:51:34,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:51:34,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3717d3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34, skipping insertion in model container [2024-11-12 20:51:34,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:51:34,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:51:34,568 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:51:34,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:51:34,590 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:51:34,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34 WrapperNode [2024-11-12 20:51:34,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:51:34,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:51:34,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:51:34,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:51:34,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,613 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2024-11-12 20:51:34,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:51:34,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:51:34,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:51:34,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:51:34,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,627 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,637 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-12 20:51:34,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:51:34,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:51:34,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:51:34,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:51:34,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (1/1) ... [2024-11-12 20:51:34,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:34,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:34,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:51:34,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-12 20:51:34,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:51:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:51:34,777 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:51:34,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:51:34,873 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-11-12 20:51:34,873 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:51:34,882 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:51:34,882 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 20:51:34,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:51:34 BoogieIcfgContainer [2024-11-12 20:51:34,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:51:34,884 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-12 20:51:34,884 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-12 20:51:34,888 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-12 20:51:34,889 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:51:34,889 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 08:51:34" (1/3) ... [2024-11-12 20:51:34,891 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4735af64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:51:34, skipping insertion in model container [2024-11-12 20:51:34,891 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:51:34,891 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:51:34" (2/3) ... [2024-11-12 20:51:34,892 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4735af64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:51:34, skipping insertion in model container [2024-11-12 20:51:34,892 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:51:34,893 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:51:34" (3/3) ... [2024-11-12 20:51:34,895 INFO L332 chiAutomizerObserver]: Analyzing ICFG or-05.c [2024-11-12 20:51:34,980 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2024-11-12 20:51:34,981 INFO L302 stractBuchiCegarLoop]: Hoare is None [2024-11-12 20:51:34,981 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-12 20:51:34,981 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-12 20:51:34,981 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-12 20:51:34,982 INFO L306 stractBuchiCegarLoop]: Difference is false [2024-11-12 20:51:34,982 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-12 20:51:34,982 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-12 20:51:34,986 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:35,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:35,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:51:35,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:51:35,015 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:51:35,015 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-12 20:51:35,015 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-12 20:51:35,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:35,017 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:35,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:51:35,017 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:51:35,017 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:51:35,017 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-12 20:51:35,024 INFO L747 eck$LassoCheckResult]: 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~bitwise1#1, main_~y~0#1, main_~x~0#1;havoc main_~y~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;main_~y~0#1 := 0;" [2024-11-12 20:51:35,024 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x~0#1 > 0);" "assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" [2024-11-12 20:51:35,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-12 20:51:35,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:35,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422559118] [2024-11-12 20:51:35,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:35,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:35,118 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:35,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:35,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1331, now seen corresponding path program 1 times [2024-11-12 20:51:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:35,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538508758] [2024-11-12 20:51:35,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:35,144 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:35,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:35,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:35,155 INFO L85 PathProgramCache]: Analyzing trace with hash 925813, now seen corresponding path program 1 times [2024-11-12 20:51:35,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:35,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39423119] [2024-11-12 20:51:35,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:35,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:35,166 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:35,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:35,247 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:51:35,248 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:51:35,248 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:51:35,248 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:51:35,248 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-12 20:51:35,248 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:35,248 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:51:35,249 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:51:35,249 INFO L132 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration1_Loop [2024-11-12 20:51:35,249 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:51:35,249 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:51:35,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:51:35,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:51:35,343 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:51:35,343 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-12 20:51:35,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:35,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:35,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:51:35,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-12 20:51:35,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:51:35,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:51:35,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-12 20:51:35,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:35,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:35,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:51:35,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-12 20:51:35,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-12 20:51:35,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:51:35,434 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-12 20:51:35,439 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 [2024-11-12 20:51:35,439 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:51:35,439 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:51:35,440 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:51:35,440 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:51:35,440 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-12 20:51:35,440 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:35,440 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:51:35,440 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:51:35,440 INFO L132 ssoRankerPreferences]: Filename of dumped script: or-05.c_Iteration1_Loop [2024-11-12 20:51:35,440 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:51:35,440 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:51:35,442 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:51:35,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:51:35,513 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:51:35,518 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-12 20:51:35,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:35,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:35,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:51:35,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-12 20:51:35,524 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-12 20:51:35,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:51:35,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:51:35,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:51:35,538 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-11-12 20:51:35,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:51:35,541 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2024-11-12 20:51:35,542 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:51:35,546 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:51:35,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-12 20:51:35,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:35,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:35,564 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:51:35,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-12 20:51:35,568 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-12 20:51:35,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:51:35,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:51:35,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:51:35,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:51:35,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:51:35,585 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 20:51:35,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:51:35,591 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-12 20:51:35,596 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-12 20:51:35,598 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-12 20:51:35,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:51:35,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:35,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:51:35,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-12 20:51:35,607 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-12 20:51:35,607 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-12 20:51:35,607 INFO L474 LassoAnalysis]: Proved termination. [2024-11-12 20:51:35,608 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-12 20:51:35,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-12 20:51:35,627 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-12 20:51:35,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:35,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:51:35,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:51:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:35,671 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:51:35,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:51:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:51:35,719 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-12 20:51:35,721 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:35,773 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 29 states and 42 transitions. Complement of second has 6 states. [2024-11-12 20:51:35,776 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 [2024-11-12 20:51:35,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2024-11-12 20:51:35,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 2 letters. [2024-11-12 20:51:35,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:51:35,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-12 20:51:35,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:51:35,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-12 20:51:35,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:51:35,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 42 transitions. [2024-11-12 20:51:35,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:35,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 16 states and 23 transitions. [2024-11-12 20:51:35,795 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-11-12 20:51:35,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-11-12 20:51:35,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2024-11-12 20:51:35,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:51:35,797 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2024-11-12 20:51:35,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2024-11-12 20:51:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2024-11-12 20:51:35,819 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) [2024-11-12 20:51:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2024-11-12 20:51:35,820 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-11-12 20:51:35,821 INFO L426 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-11-12 20:51:35,821 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-12 20:51:35,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2024-11-12 20:51:35,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:35,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:51:35,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:51:35,823 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-12 20:51:35,823 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-12 20:51:35,823 INFO L747 eck$LassoCheckResult]: 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~bitwise1#1, main_~y~0#1, main_~x~0#1;havoc main_~y~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;main_~y~0#1 := 0;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" [2024-11-12 20:51:35,824 INFO L749 eck$LassoCheckResult]: Loop: "assume 0 == main_~y~0#1 || main_~y~0#1 == 1 + main_~y~0#1;main_#t~bitwise1#1 := 1 + main_~y~0#1;" "main_~x~0#1 := main_#t~bitwise1#1;havoc main_#t~bitwise1#1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" [2024-11-12 20:51:35,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-11-12 20:51:35,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:35,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604093624] [2024-11-12 20:51:35,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:35,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:35,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:51:35,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604093624] [2024-11-12 20:51:35,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604093624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:51:35,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698836154] [2024-11-12 20:51:35,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:35,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:51:35,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:35,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:51:35,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 20:51:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:35,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:51:35,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:51:35,898 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:51:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698836154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:51:35,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:51:35,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-12 20:51:35,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194198097] [2024-11-12 20:51:35,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:51:35,912 INFO L752 eck$LassoCheckResult]: stem already infeasible [2024-11-12 20:51:35,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:35,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1456270, now seen corresponding path program 1 times [2024-11-12 20:51:35,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:35,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188331350] [2024-11-12 20:51:35,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:35,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:51:35,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188331350] [2024-11-12 20:51:35,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188331350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:51:35,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557156745] [2024-11-12 20:51:35,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:35,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:51:35,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:35,944 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:51:35,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 20:51:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:35,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:51:35,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:51:35,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:51:35,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557156745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:51:35,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:51:35,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1, 1, 1] total 1 [2024-11-12 20:51:35,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180770341] [2024-11-12 20:51:35,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:51:35,987 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:51:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:51:35,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:51:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:51:35,991 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:51:36,008 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2024-11-12 20:51:36,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2024-11-12 20:51:36,009 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-11-12 20:51:36,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 20 transitions. [2024-11-12 20:51:36,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-11-12 20:51:36,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2024-11-12 20:51:36,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2024-11-12 20:51:36,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:51:36,010 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 20 transitions. [2024-11-12 20:51:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2024-11-12 20:51:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-12 20:51:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-11-12 20:51:36,012 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-11-12 20:51:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:51:36,014 INFO L426 stractBuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-11-12 20:51:36,014 INFO L333 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-12 20:51:36,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2024-11-12 20:51:36,014 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-11-12 20:51:36,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:51:36,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:51:36,015 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2024-11-12 20:51:36,015 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2024-11-12 20:51:36,016 INFO L747 eck$LassoCheckResult]: 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~bitwise1#1, main_~y~0#1, main_~x~0#1;havoc main_~y~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;main_~y~0#1 := 0;" "assume !!(main_~x~0#1 > 0);" "assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" [2024-11-12 20:51:36,016 INFO L749 eck$LassoCheckResult]: Loop: "assume 0 == main_~y~0#1 || main_~y~0#1 == 1 + main_~y~0#1;main_#t~bitwise1#1 := 1 + main_~y~0#1;" "main_~x~0#1 := main_#t~bitwise1#1;havoc main_#t~bitwise1#1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" [2024-11-12 20:51:36,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash 889706648, now seen corresponding path program 1 times [2024-11-12 20:51:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663372583] [2024-11-12 20:51:36,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,024 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:36,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:36,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1399490240, now seen corresponding path program 1 times [2024-11-12 20:51:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:36,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304275695] [2024-11-12 20:51:36,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:36,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:36,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:51:36,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304275695] [2024-11-12 20:51:36,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304275695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:51:36,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067642793] [2024-11-12 20:51:36,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:36,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:51:36,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:51:36,110 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:51:36,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 20:51:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:51:36,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 20:51:36,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:51:36,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:51:36,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067642793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:51:36,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:51:36,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-12 20:51:36,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026827197] [2024-11-12 20:51:36,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:51:36,203 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:51:36,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:51:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:51:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:51:36,204 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:51:36,233 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2024-11-12 20:51:36,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2024-11-12 20:51:36,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:36,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 14 transitions. [2024-11-12 20:51:36,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2024-11-12 20:51:36,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-11-12 20:51:36,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2024-11-12 20:51:36,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:51:36,235 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-12 20:51:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2024-11-12 20:51:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-12 20:51:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:51:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2024-11-12 20:51:36,238 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-12 20:51:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:51:36,239 INFO L426 stractBuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2024-11-12 20:51:36,240 INFO L333 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-12 20:51:36,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2024-11-12 20:51:36,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-12 20:51:36,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:51:36,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:51:36,243 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2024-11-12 20:51:36,243 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:51:36,243 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~bitwise1#1, main_~y~0#1, main_~x~0#1;havoc main_~y~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := 0;" "assume !!(main_~x~0#1 > 0);" "assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" [2024-11-12 20:51:36,243 INFO L749 eck$LassoCheckResult]: Loop: "assume !(0 == main_~y~0#1 || main_~y~0#1 == 1 + main_~y~0#1);" "assume !(0 == 1 + main_~y~0#1);" "havoc main_#t~bitwise1#1;assume (((((main_~y~0#1 < 0 && 1 + main_~y~0#1 >= 0) || main_#t~bitwise1#1 >= 1 + main_~y~0#1) && ((main_~y~0#1 >= 0 && 1 + main_~y~0#1 < 0) || main_#t~bitwise1#1 >= main_~y~0#1)) && ((main_~y~0#1 < 0 || 1 + main_~y~0#1 < 0) || main_#t~bitwise1#1 <= main_~y~0#1 + (1 + main_~y~0#1))) && ((main_~y~0#1 >= 0 && 1 + main_~y~0#1 >= 0) || main_#t~bitwise1#1 < 0)) && main_#t~bitwise1#1 <= 2147483647;" "main_~x~0#1 := main_#t~bitwise1#1;havoc main_#t~bitwise1#1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" [2024-11-12 20:51:36,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:36,244 INFO L85 PathProgramCache]: Analyzing trace with hash 889706648, now seen corresponding path program 2 times [2024-11-12 20:51:36,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:36,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523526690] [2024-11-12 20:51:36,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:36,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,254 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,260 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:36,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:36,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1454393131, now seen corresponding path program 1 times [2024-11-12 20:51:36,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:36,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671021463] [2024-11-12 20:51:36,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:36,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,275 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:36,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:51:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash -532475262, now seen corresponding path program 1 times [2024-11-12 20:51:36,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:51:36,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464995324] [2024-11-12 20:51:36,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:51:36,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:51:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,297 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:51:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,409 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:51:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:51:36,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 08:51:36 BoogieIcfgContainer [2024-11-12 20:51:36,422 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-12 20:51:36,423 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:51:36,423 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:51:36,423 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:51:36,424 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:51:34" (3/4) ... [2024-11-12 20:51:36,426 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-12 20:51:36,427 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:51:36,428 INFO L158 Benchmark]: Toolchain (without parser) took 2084.35ms. Allocated memory was 148.9MB in the beginning and 230.7MB in the end (delta: 81.8MB). Free memory was 91.3MB in the beginning and 126.0MB in the end (delta: -34.7MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2024-11-12 20:51:36,429 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 148.9MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:51:36,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.23ms. Allocated memory is still 148.9MB. Free memory was 90.9MB in the beginning and 79.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-12 20:51:36,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.98ms. Allocated memory is still 148.9MB. Free memory was 79.8MB in the beginning and 78.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:51:36,431 INFO L158 Benchmark]: Boogie Preprocessor took 33.24ms. Allocated memory is still 148.9MB. Free memory was 78.3MB in the beginning and 77.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:51:36,431 INFO L158 Benchmark]: RCFGBuilder took 234.68ms. Allocated memory is still 148.9MB. Free memory was 77.0MB in the beginning and 67.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-12 20:51:36,434 INFO L158 Benchmark]: BuchiAutomizer took 1538.45ms. Allocated memory was 148.9MB in the beginning and 230.7MB in the end (delta: 81.8MB). Free memory was 67.2MB in the beginning and 126.0MB in the end (delta: -58.8MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2024-11-12 20:51:36,434 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 230.7MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:51:36,436 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 148.9MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.23ms. Allocated memory is still 148.9MB. Free memory was 90.9MB in the beginning and 79.8MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.98ms. Allocated memory is still 148.9MB. Free memory was 79.8MB in the beginning and 78.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.24ms. Allocated memory is still 148.9MB. Free memory was 78.3MB in the beginning and 77.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 234.68ms. Allocated memory is still 148.9MB. Free memory was 77.0MB in the beginning and 67.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1538.45ms. Allocated memory was 148.9MB in the beginning and 230.7MB in the end (delta: 81.8MB). Free memory was 67.2MB in the beginning and 126.0MB in the end (delta: -58.8MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 230.7MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one module whose termination is unknown.One deterministic module has affine ranking function x and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 28 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq170 hnf94 smp100 dnf137 smp100 tf109 neg100 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s 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: y|(y+1) [21] (Reason bitwiseOr) 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~bitwise1#1, main_~y~0#1, main_~x~0#1;havoc main_~y~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;main_~y~0#1 := 0;" "assume !!(main_~x~0#1 > 0);" "assume !(1 == main_~y~0#1);main_~y~0#1 := 1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" Loop: "assume !(0 == main_~y~0#1 || main_~y~0#1 == 1 + main_~y~0#1);" "assume !(0 == 1 + main_~y~0#1);" "havoc main_#t~bitwise1#1;assume (((((main_~y~0#1 < 0 && 1 + main_~y~0#1 >= 0) || main_#t~bitwise1#1 >= 1 + main_~y~0#1) && ((main_~y~0#1 >= 0 && 1 + main_~y~0#1 < 0) || main_#t~bitwise1#1 >= main_~y~0#1)) && ((main_~y~0#1 < 0 || 1 + main_~y~0#1 < 0) || main_#t~bitwise1#1 <= main_~y~0#1 + (1 + main_~y~0#1))) && ((main_~y~0#1 >= 0 && 1 + main_~y~0#1 >= 0) || main_#t~bitwise1#1 < 0)) && main_#t~bitwise1#1 <= 2147483647;" "main_~x~0#1 := main_#t~bitwise1#1;havoc main_#t~bitwise1#1;main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" "assume !!(main_~x~0#1 > 0);" "assume 1 == main_~y~0#1;" RESULT: Ultimate could not prove your program: unable to determine termination [2024-11-12 20:51:36,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 20:51:36,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 20:51:36,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 20:51:37,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-12 20:51:37,260 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