./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.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-crafted-lit/Urban-WST2013-Fig2.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 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:53:37,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:53:37,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-12 20:53:37,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:53:37,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:53:37,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:53:37,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:53:37,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:53:37,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:53:37,749 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:53:37,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:53:37,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:53:37,751 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:53:37,751 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-12 20:53:37,752 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-12 20:53:37,752 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-12 20:53:37,752 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-12 20:53:37,752 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-12 20:53:37,753 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-12 20:53:37,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:53:37,756 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-12 20:53:37,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:53:37,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:53:37,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-12 20:53:37,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-12 20:53:37,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-12 20:53:37,758 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:53:37,758 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:53:37,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:53:37,759 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-12 20:53:37,759 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:53:37,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:53:37,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:53:37,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:53:37,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:53:37,761 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-12 20:53:37,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c55a9a6f50b70c8ad02d8f9cdba1133727e3a9a73c5b8d3940178ed4735e2c1 [2024-11-12 20:53:38,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:53:38,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:53:38,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:53:38,075 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:53:38,076 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:53:38,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2024-11-12 20:53:39,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:53:39,733 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:53:39,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2024-11-12 20:53:39,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/796b949f9/79851eb15e3042caa3597e2fa8f9f6b7/FLAG486d8660e [2024-11-12 20:53:39,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/796b949f9/79851eb15e3042caa3597e2fa8f9f6b7 [2024-11-12 20:53:39,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:53:39,761 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:53:39,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:53:39,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:53:39,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:53:39,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:53:39" (1/1) ... [2024-11-12 20:53:39,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e632c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:39, skipping insertion in model container [2024-11-12 20:53:39,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:53:39" (1/1) ... [2024-11-12 20:53:39,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:53:39,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:53:39,982 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:53:39,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:53:40,010 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:53:40,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40 WrapperNode [2024-11-12 20:53:40,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:53:40,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:53:40,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:53:40,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:53:40,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,037 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2024-11-12 20:53:40,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:53:40,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:53:40,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:53:40,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:53:40,049 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,056 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-12 20:53:40,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:53:40,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:53:40,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:53:40,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:53:40,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (1/1) ... [2024-11-12 20:53:40,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:40,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:40,110 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 20:53:40,114 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 20:53:40,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:53:40,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:53:40,229 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:53:40,231 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:53:40,297 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-12 20:53:40,298 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:53:40,312 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:53:40,315 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:53:40,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:53:40 BoogieIcfgContainer [2024-11-12 20:53:40,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:53:40,317 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-12 20:53:40,317 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-12 20:53:40,322 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-12 20:53:40,323 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:53:40,323 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 08:53:39" (1/3) ... [2024-11-12 20:53:40,324 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77b061aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:53:40, skipping insertion in model container [2024-11-12 20:53:40,324 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:53:40,325 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:53:40" (2/3) ... [2024-11-12 20:53:40,325 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77b061aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 08:53:40, skipping insertion in model container [2024-11-12 20:53:40,325 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-12 20:53:40,325 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:53:40" (3/3) ... [2024-11-12 20:53:40,328 INFO L332 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2024-11-12 20:53:40,388 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2024-11-12 20:53:40,388 INFO L302 stractBuchiCegarLoop]: Hoare is None [2024-11-12 20:53:40,388 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-12 20:53:40,388 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-12 20:53:40,389 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-12 20:53:40,389 INFO L306 stractBuchiCegarLoop]: Difference is false [2024-11-12 20:53:40,390 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-12 20:53:40,390 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-12 20:53:40,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:40,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-12 20:53:40,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:40,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:40,415 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:53:40,415 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:53:40,415 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-12 20:53:40,416 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:40,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-11-12 20:53:40,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:40,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:40,418 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:53:40,418 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-12 20:53:40,426 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~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:53:40,427 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-12 20:53:40,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:40,435 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-12 20:53:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:40,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004531544] [2024-11-12 20:53:40,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:40,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:40,529 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:40,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:40,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2024-11-12 20:53:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:40,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767092638] [2024-11-12 20:53:40,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:40,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:40,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:53:40,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767092638] [2024-11-12 20:53:40,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767092638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:53:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417115960] [2024-11-12 20:53:40,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:40,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:53:40,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:40,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:53:40,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 20:53:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:40,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:53:40,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:40,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:53:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417115960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:53:40,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:53:40,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 3 [2024-11-12 20:53:40,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796400501] [2024-11-12 20:53:40,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:53:40,752 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:53:40,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:53:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:53:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:53:40,790 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:40,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:53:40,815 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2024-11-12 20:53:40,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2024-11-12 20:53:40,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:53:40,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2024-11-12 20:53:40,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-12 20:53:40,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2024-11-12 20:53:40,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2024-11-12 20:53:40,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:53:40,821 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-12 20:53:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2024-11-12 20:53:40,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-11-12 20:53:40,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2024-11-12 20:53:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-11-12 20:53:40,842 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-12 20:53:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:53:40,847 INFO L426 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-12 20:53:40,847 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-12 20:53:40,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-11-12 20:53:40,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-12 20:53:40,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:40,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:40,848 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:53:40,848 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2024-11-12 20:53:40,849 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:53:40,849 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-12 20:53:40,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:40,849 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-12 20:53:40,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:40,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712160899] [2024-11-12 20:53:40,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:40,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:40,853 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:40,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:40,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 39403504, now seen corresponding path program 1 times [2024-11-12 20:53:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:40,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564871408] [2024-11-12 20:53:40,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:40,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:53:40,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564871408] [2024-11-12 20:53:40,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564871408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:53:40,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699939023] [2024-11-12 20:53:40,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:40,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:53:40,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:40,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:53:40,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 20:53:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:41,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:53:41,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:41,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 20:53:41,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699939023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 20:53:41,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 20:53:41,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-12 20:53:41,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620937798] [2024-11-12 20:53:41,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 20:53:41,117 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:53:41,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:53:41,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 20:53:41,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-12 20:53:41,119 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:53:41,149 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2024-11-12 20:53:41,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2024-11-12 20:53:41,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-11-12 20:53:41,150 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2024-11-12 20:53:41,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2024-11-12 20:53:41,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2024-11-12 20:53:41,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2024-11-12 20:53:41,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:53:41,150 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-12 20:53:41,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2024-11-12 20:53:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-12 20:53:41,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-11-12 20:53:41,154 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-12 20:53:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 20:53:41,156 INFO L426 stractBuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-12 20:53:41,156 INFO L333 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-12 20:53:41,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2024-11-12 20:53:41,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-11-12 20:53:41,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:41,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:41,157 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:53:41,157 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2024-11-12 20:53:41,157 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~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:53:41,157 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-12 20:53:41,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:41,158 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-12 20:53:41,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:41,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228526425] [2024-11-12 20:53:41,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:41,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:41,181 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:41,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:41,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1240301584, now seen corresponding path program 2 times [2024-11-12 20:53:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:41,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374480681] [2024-11-12 20:53:41,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:41,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:41,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:53:41,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374480681] [2024-11-12 20:53:41,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374480681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:53:41,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005565827] [2024-11-12 20:53:41,413 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 20:53:41,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:53:41,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:41,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:53:41,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 20:53:41,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 20:53:41,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:53:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-12 20:53:41,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640802835] [2024-11-12 20:53:41,460 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 20:53:41,460 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:53:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:53:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 20:53:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-12 20:53:41,462 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand has 9 states, 9 states have (on average 1.0) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:41,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:53:41,487 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2024-11-12 20:53:41,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2024-11-12 20:53:41,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-12 20:53:41,489 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2024-11-12 20:53:41,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-11-12 20:53:41,490 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2024-11-12 20:53:41,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2024-11-12 20:53:41,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:53:41,490 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-12 20:53:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2024-11-12 20:53:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-12 20:53:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-11-12 20:53:41,494 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-12 20:53:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 20:53:41,495 INFO L426 stractBuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-12 20:53:41,495 INFO L333 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-12 20:53:41,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2024-11-12 20:53:41,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-12 20:53:41,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:41,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:41,497 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:53:41,498 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [7, 1, 1, 1] [2024-11-12 20:53:41,498 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:53:41,498 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-12 20:53:41,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-12 20:53:41,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:41,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187102432] [2024-11-12 20:53:41,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:41,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:41,503 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:41,505 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:41,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash 205358320, now seen corresponding path program 3 times [2024-11-12 20:53:41,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:41,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998769515] [2024-11-12 20:53:41,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:41,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:41,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:53:41,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998769515] [2024-11-12 20:53:41,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998769515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:53:41,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839306751] [2024-11-12 20:53:41,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 20:53:41,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:53:41,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:41,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:53:41,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 20:53:41,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 20:53:41,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:53:41,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-12 20:53:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824904844] [2024-11-12 20:53:41,720 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 20:53:41,721 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:53:41,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:53:41,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 20:53:41,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-11-12 20:53:41,722 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand has 10 states, 10 states have (on average 1.0) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:53:41,743 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2024-11-12 20:53:41,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2024-11-12 20:53:41,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2024-11-12 20:53:41,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2024-11-12 20:53:41,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2024-11-12 20:53:41,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2024-11-12 20:53:41,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2024-11-12 20:53:41,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:53:41,745 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-12 20:53:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2024-11-12 20:53:41,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-12 20:53:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 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 20:53:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-12 20:53:41,749 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-12 20:53:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 20:53:41,751 INFO L426 stractBuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-12 20:53:41,751 INFO L333 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-12 20:53:41,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2024-11-12 20:53:41,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2024-11-12 20:53:41,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:41,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:41,752 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:53:41,752 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 1, 1, 1] [2024-11-12 20:53:41,752 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~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:53:41,752 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-12 20:53:41,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:41,753 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2024-11-12 20:53:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:41,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886538973] [2024-11-12 20:53:41,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:41,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:41,760 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:41,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:41,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:41,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2071142384, now seen corresponding path program 4 times [2024-11-12 20:53:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:41,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45776188] [2024-11-12 20:53:41,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:41,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:41,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:53:41,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45776188] [2024-11-12 20:53:41,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45776188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 20:53:41,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441014853] [2024-11-12 20:53:41,938 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 20:53:41,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 20:53:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:41,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 20:53:41,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 20:53:41,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 20:53:41,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-12 20:53:41,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-12 20:53:41,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125714640] [2024-11-12 20:53:41,968 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-12 20:53:41,969 INFO L764 eck$LassoCheckResult]: loop already infeasible [2024-11-12 20:53:41,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:53:41,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 20:53:41,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-12 20:53:41,970 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 11 states, 11 states have (on average 1.0) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 20:53:41,988 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2024-11-12 20:53:41,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2024-11-12 20:53:41,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-11-12 20:53:41,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 15 transitions. [2024-11-12 20:53:41,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2024-11-12 20:53:41,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-11-12 20:53:41,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2024-11-12 20:53:41,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:53:41,990 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-12 20:53:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2024-11-12 20:53:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-12 20:53:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 20:53:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-12 20:53:41,991 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-12 20:53:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 20:53:41,992 INFO L426 stractBuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-12 20:53:41,992 INFO L333 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-12 20:53:41,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 15 transitions. [2024-11-12 20:53:41,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-11-12 20:53:41,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:41,993 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:41,993 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-12 20:53:41,993 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2024-11-12 20:53:41,994 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-12 20:53:41,994 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" [2024-11-12 20:53:41,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2024-11-12 20:53:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:41,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575697905] [2024-11-12 20:53:41,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,001 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:42,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:42,003 INFO L85 PathProgramCache]: Analyzing trace with hash -219093776, now seen corresponding path program 5 times [2024-11-12 20:53:42,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:42,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831538349] [2024-11-12 20:53:42,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,020 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:42,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash 995055026, now seen corresponding path program 1 times [2024-11-12 20:53:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:42,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158214223] [2024-11-12 20:53:42,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,040 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:42,185 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:53:42,185 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:53:42,186 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:53:42,187 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:53:42,187 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-12 20:53:42,187 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,187 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:53:42,187 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:53:42,187 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2024-11-12 20:53:42,187 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:53:42,188 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:53:42,204 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,211 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,216 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,219 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,275 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:53:42,276 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-12 20:53:42,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-12 20:53:42,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:53:42,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:42,310 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:53:42,311 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x2~0#1=0} Honda state: {ULTIMATE.start_main_~x2~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-12 20:53:42,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:42,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,351 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-12 20:53:42,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:53:42,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:42,375 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:53:42,375 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-12 20:53:42,385 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 [2024-11-12 20:53:42,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-12 20:53:42,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:53:42,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:42,408 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:53:42,409 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-12 20:53:42,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:42,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,422 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-12 20:53:42,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:53:42,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:42,448 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 [2024-11-12 20:53:42,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-12 20:53:42,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-12 20:53:42,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:42,479 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-12 20:53:42,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-12 20:53:42,484 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:53:42,484 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:53:42,484 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:53:42,485 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:53:42,485 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-12 20:53:42,485 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,485 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:53:42,485 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:53:42,485 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration6_Loop [2024-11-12 20:53:42,485 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:53:42,485 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:53:42,486 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,489 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,492 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,494 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,527 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:53:42,531 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-12 20:53:42,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,533 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-12 20:53:42,535 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 20:53:42,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:53:42,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:53:42,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:53:42,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:53:42,549 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:53:42,549 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:53:42,554 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:53:42,568 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 [2024-11-12 20:53:42,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,571 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-12 20:53:42,574 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 20:53:42,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:53:42,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:53:42,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:53:42,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:53:42,588 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:53:42,588 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:53:42,593 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:53:42,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-12 20:53:42,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,611 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-12 20:53:42,614 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 20:53:42,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:53:42,626 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:53:42,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:53:42,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:53:42,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:53:42,627 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 20:53:42,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:53:42,630 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:53:42,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-12 20:53:42,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,643 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-12 20:53:42,645 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 20:53:42,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:53:42,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:53:42,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:53:42,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:53:42,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:53:42,656 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 20:53:42,656 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:53:42,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-12 20:53:42,661 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-12 20:53:42,661 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-12 20:53:42,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:42,664 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:42,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-12 20:53:42,666 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-12 20:53:42,666 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-12 20:53:42,666 INFO L474 LassoAnalysis]: Proved termination. [2024-11-12 20:53:42,667 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x1~0#1) = -2*ULTIMATE.start_main_~x1~0#1 + 21 Supporting invariants [] [2024-11-12 20:53:42,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:42,681 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-12 20:53:42,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:42,707 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:53:42,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:42,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:53:42,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:42,828 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-12 20:53:42,832 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 20:53:42,834 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 15 transitions. cyclomatic complexity: 2 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) [2024-11-12 20:53:42,871 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 15 transitions. cyclomatic complexity: 2. 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 26 states and 29 transitions. Complement of second has 4 states. [2024-11-12 20:53:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-12 20:53:42,874 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) [2024-11-12 20:53:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-12 20:53:42,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 12 letters. [2024-11-12 20:53:42,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:42,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 14 letters. Loop has 12 letters. [2024-11-12 20:53:42,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:42,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 24 letters. [2024-11-12 20:53:42,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:42,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 29 transitions. [2024-11-12 20:53:42,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-12 20:53:42,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 28 transitions. [2024-11-12 20:53:42,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-11-12 20:53:42,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2024-11-12 20:53:42,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 28 transitions. [2024-11-12 20:53:42,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:53:42,879 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-12 20:53:42,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 28 transitions. [2024-11-12 20:53:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2024-11-12 20:53:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 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 20:53:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-12 20:53:42,886 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-12 20:53:42,886 INFO L426 stractBuchiCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-12 20:53:42,886 INFO L333 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-12 20:53:42,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 19 transitions. [2024-11-12 20:53:42,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-12 20:53:42,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:42,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:42,887 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-12 20:53:42,887 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-12 20:53:42,887 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" [2024-11-12 20:53:42,887 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" [2024-11-12 20:53:42,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-11-12 20:53:42,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:42,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011937216] [2024-11-12 20:53:42,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:42,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,895 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:42,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2024-11-12 20:53:42,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271584003] [2024-11-12 20:53:42,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:42,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,917 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:42,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2024-11-12 20:53:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:42,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938960942] [2024-11-12 20:53:42,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:42,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,936 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:42,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:42,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-12 20:53:42,954 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:53:42,954 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:53:42,954 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:53:42,954 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:53:42,954 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-12 20:53:42,954 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:42,954 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:53:42,955 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:53:42,955 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration7_Loop [2024-11-12 20:53:42,955 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:53:42,955 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:53:42,956 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:42,964 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,001 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:53:43,002 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-12 20:53:43,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,004 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-12 20:53:43,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:53:43,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:43,032 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:53:43,032 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-12 20:53:43,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-12 20:53:43,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,049 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-12 20:53:43,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:53:43,053 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:43,076 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-12 20:53:43,077 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-12 20:53:43,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-12 20:53:43,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,095 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-12 20:53:43,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:53:43,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:43,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-12 20:53:43,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,131 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-12 20:53:43,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-12 20:53:43,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:43,170 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-12 20:53:43,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:43,175 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:53:43,175 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:53:43,175 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:53:43,175 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:53:43,175 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-12 20:53:43,175 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,175 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:53:43,175 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:53:43,175 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration7_Loop [2024-11-12 20:53:43,176 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:53:43,176 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:53:43,176 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,185 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,188 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,224 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:53:43,225 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-12 20:53:43,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,226 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-12 20:53:43,228 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 20:53:43,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:53:43,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:53:43,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:53:43,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:53:43,240 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:53:43,240 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:53:43,243 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:53:43,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-12 20:53:43,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,261 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-12 20:53:43,263 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 20:53:43,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:53:43,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:53:43,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:53:43,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:53:43,278 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-12 20:53:43,278 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-12 20:53:43,282 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-12 20:53:43,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,299 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-12 20:53:43,301 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 20:53:43,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:53:43,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:53:43,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:53:43,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:53:43,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:53:43,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 20:53:43,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:53:43,319 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-12 20:53:43,325 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-12 20:53:43,325 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-12 20:53:43,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,327 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-12 20:53:43,329 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-12 20:53:43,329 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-12 20:53:43,330 INFO L474 LassoAnalysis]: Proved termination. [2024-11-12 20:53:43,330 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0#1) = 1*ULTIMATE.start_main_~x2~0#1 Supporting invariants [] [2024-11-12 20:53:43,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:43,344 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-12 20:53:43,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:43,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:53:43,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:43,361 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:53:43,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:43,362 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 20:53:43,362 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 [2024-11-12 20:53:43,362 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5 Second operand has 2 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 20:53:43,368 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 19 transitions. cyclomatic complexity: 5. Second operand has 2 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) Result 28 states and 32 transitions. Complement of second has 3 states. [2024-11-12 20:53:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-12 20:53:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 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 20:53:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-11-12 20:53:43,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 3 letters. Loop has 1 letters. [2024-11-12 20:53:43,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:43,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 4 letters. Loop has 1 letters. [2024-11-12 20:53:43,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:43,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-12 20:53:43,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:43,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 32 transitions. [2024-11-12 20:53:43,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-12 20:53:43,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 29 transitions. [2024-11-12 20:53:43,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2024-11-12 20:53:43,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2024-11-12 20:53:43,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 29 transitions. [2024-11-12 20:53:43,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-12 20:53:43,372 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-12 20:53:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 29 transitions. [2024-11-12 20:53:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2024-11-12 20:53:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 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 20:53:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-11-12 20:53:43,374 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-12 20:53:43,374 INFO L426 stractBuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-11-12 20:53:43,374 INFO L333 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-12 20:53:43,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2024-11-12 20:53:43,375 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2024-11-12 20:53:43,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-12 20:53:43,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-12 20:53:43,375 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1, 1] [2024-11-12 20:53:43,376 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2024-11-12 20:53:43,376 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x1~0#1, main_~x2~0#1;havoc main_~x1~0#1;havoc main_~x2~0#1;havoc main_#t~nondet0#1;main_~x1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" "assume !(main_~x2~0#1 > 1);" "main_~x1~0#1 := 1 + main_~x1~0#1;" "assume !!(main_~x1~0#1 <= 10);main_~x2~0#1 := 10;" [2024-11-12 20:53:43,376 INFO L749 eck$LassoCheckResult]: Loop: "assume !!(main_~x2~0#1 > 1);main_~x2~0#1 := main_~x2~0#1 - 1;" [2024-11-12 20:53:43,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash 781934745, now seen corresponding path program 2 times [2024-11-12 20:53:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23033395] [2024-11-12 20:53:43,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:43,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:43,383 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:43,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:43,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2024-11-12 20:53:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:43,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628759794] [2024-11-12 20:53:43,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:43,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:43,392 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:43,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:43,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:43,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1529826661, now seen corresponding path program 3 times [2024-11-12 20:53:43,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:53:43,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962511299] [2024-11-12 20:53:43,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:53:43,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:53:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:43,400 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:53:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:53:43,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:53:43,426 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:53:43,426 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:53:43,426 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:53:43,426 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:53:43,426 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-12 20:53:43,426 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,426 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:53:43,426 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:53:43,426 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration8_Loop [2024-11-12 20:53:43,426 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:53:43,426 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:53:43,427 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,436 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,439 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,470 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:53:43,470 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-12 20:53:43,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,472 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-12 20:53:43,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-12 20:53:43,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:43,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-11-12 20:53:43,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,508 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-12 20:53:43,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-12 20:53:43,511 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-12 20:53:43,548 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-12 20:53:43,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-12 20:53:43,553 INFO L204 LassoAnalysis]: Preferences: [2024-11-12 20:53:43,553 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-12 20:53:43,553 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-12 20:53:43,553 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-12 20:53:43,553 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-12 20:53:43,553 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,553 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-12 20:53:43,553 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-12 20:53:43,553 INFO L132 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration8_Loop [2024-11-12 20:53:43,553 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-12 20:53:43,553 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-12 20:53:43,554 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,564 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-12 20:53:43,597 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-12 20:53:43,597 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-12 20:53:43,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,602 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-12 20:53:43,604 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 20:53:43,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-12 20:53:43,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-12 20:53:43,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-12 20:53:43,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-12 20:53:43,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-12 20:53:43,618 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-12 20:53:43,618 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-12 20:53:43,622 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-12 20:53:43,626 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-12 20:53:43,626 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-12 20:53:43,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-12 20:53:43,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:53:43,628 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-12 20:53:43,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-12 20:53:43,630 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-12 20:53:43,630 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-12 20:53:43,631 INFO L474 LassoAnalysis]: Proved termination. [2024-11-12 20:53:43,631 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0#1) = 1*ULTIMATE.start_main_~x2~0#1 Supporting invariants [] [2024-11-12 20:53:43,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:43,648 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-12 20:53:43,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:43,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:53:43,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:43,704 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:53:43,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:43,705 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 20:53:43,705 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 [2024-11-12 20:53:43,705 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-12 20:53:43,712 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 29 transitions. Complement of second has 3 states. [2024-11-12 20:53:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-12 20:53:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-12 20:53:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-11-12 20:53:43,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 15 letters. Loop has 1 letters. [2024-11-12 20:53:43,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:43,714 INFO L683 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-12 20:53:43,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:43,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:53:43,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:43,767 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:53:43,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:43,767 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 20:53:43,768 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 [2024-11-12 20:53:43,768 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-12 20:53:43,773 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 29 transitions. Complement of second has 3 states. [2024-11-12 20:53:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-12 20:53:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-12 20:53:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 4 transitions. [2024-11-12 20:53:43,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 4 transitions. Stem has 15 letters. Loop has 1 letters. [2024-11-12 20:53:43,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:43,774 INFO L683 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-12 20:53:43,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:53:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:43,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-12 20:53:43,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:53:43,829 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 20:53:43,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 20:53:43,830 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 20:53:43,830 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 [2024-11-12 20:53:43,831 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-12 20:53:43,838 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 19 transitions. Complement of second has 2 states. [2024-11-12 20:53:43,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-12 20:53:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2024-11-12 20:53:43,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2024-11-12 20:53:43,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 15 letters. Loop has 1 letters. [2024-11-12 20:53:43,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:43,840 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 16 letters. Loop has 1 letters. [2024-11-12 20:53:43,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:43,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 15 letters. Loop has 2 letters. [2024-11-12 20:53:43,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-12 20:53:43,841 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2024-11-12 20:53:43,841 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-12 20:53:43,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2024-11-12 20:53:43,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-12 20:53:43,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-12 20:53:43,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-12 20:53:43,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-12 20:53:43,842 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 20:53:43,842 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 20:53:43,842 INFO L426 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-12 20:53:43,842 INFO L333 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-11-12 20:53:43,842 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-12 20:53:43,842 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-12 20:53:43,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-12 20:53:43,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 08:53:43 BoogieIcfgContainer [2024-11-12 20:53:43,850 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-12 20:53:43,850 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:53:43,851 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:53:43,851 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:53:43,851 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:53:40" (3/4) ... [2024-11-12 20:53:43,853 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-12 20:53:43,854 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:53:43,855 INFO L158 Benchmark]: Toolchain (without parser) took 4094.44ms. Allocated memory was 155.2MB in the beginning and 192.9MB in the end (delta: 37.7MB). Free memory was 104.6MB in the beginning and 108.6MB in the end (delta: -4.0MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2024-11-12 20:53:43,855 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory was 117.8MB in the beginning and 117.7MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:53:43,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.80ms. Allocated memory is still 155.2MB. Free memory was 104.0MB in the beginning and 92.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-12 20:53:43,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.10ms. Allocated memory is still 155.2MB. Free memory was 92.9MB in the beginning and 91.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:53:43,856 INFO L158 Benchmark]: Boogie Preprocessor took 28.44ms. Allocated memory is still 155.2MB. Free memory was 91.4MB in the beginning and 90.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:53:43,856 INFO L158 Benchmark]: RCFGBuilder took 248.06ms. Allocated memory is still 155.2MB. Free memory was 90.3MB in the beginning and 81.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-12 20:53:43,857 INFO L158 Benchmark]: BuchiAutomizer took 3533.33ms. Allocated memory was 155.2MB in the beginning and 192.9MB in the end (delta: 37.7MB). Free memory was 80.9MB in the beginning and 108.6MB in the end (delta: -27.6MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2024-11-12 20:53:43,860 INFO L158 Benchmark]: Witness Printer took 4.01ms. Allocated memory is still 192.9MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:53:43,861 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 155.2MB. Free memory was 117.8MB in the beginning and 117.7MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.80ms. Allocated memory is still 155.2MB. Free memory was 104.0MB in the beginning and 92.9MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.10ms. Allocated memory is still 155.2MB. Free memory was 92.9MB in the beginning and 91.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.44ms. Allocated memory is still 155.2MB. Free memory was 91.4MB in the beginning and 90.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 248.06ms. Allocated memory is still 155.2MB. Free memory was 90.3MB in the beginning and 81.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3533.33ms. Allocated memory was 155.2MB in the beginning and 192.9MB in the end (delta: 37.7MB). Free memory was 80.9MB in the beginning and 108.6MB in the end (delta: -27.6MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Witness Printer took 4.01ms. Allocated memory is still 192.9MB. Free memory is still 108.6MB. 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 8 terminating modules (5 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (((long) -2 * x1) + 21) and consists of 3 locations. One deterministic module has affine ranking function x2 and consists of 2 locations. One nondeterministic module has affine ranking function x2 and consists of 2 locations. 5 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.4s and 9 iterations. TraceHistogramMax:9. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 80 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 48 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI5 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-12 20:53:43,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:44,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:44,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:44,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 20:53:44,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:44,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:45,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 20:53:45,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE