./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Narrowing.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Narrowing.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 65d96571ae692dc892a607d17412b050d92bd8365fc1d6c09a627f6750d6e1ac --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:11:21,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:11:21,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-20 22:11:21,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:11:21,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:11:21,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:11:21,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:11:21,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:11:21,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:11:21,142 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:11:21,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:11:21,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:11:21,143 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:11:21,143 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-20 22:11:21,143 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-20 22:11:21,144 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-20 22:11:21,144 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-20 22:11:21,144 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-20 22:11:21,148 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-20 22:11:21,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:11:21,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-20 22:11:21,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:11:21,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:11:21,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-20 22:11:21,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-20 22:11:21,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-20 22:11:21,151 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:11:21,151 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:11:21,151 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:11:21,152 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-20 22:11:21,152 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:11:21,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:11:21,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:11:21,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:11:21,154 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:11:21,154 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-20 22:11:21,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65d96571ae692dc892a607d17412b050d92bd8365fc1d6c09a627f6750d6e1ac [2024-11-20 22:11:21,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:11:21,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:11:21,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:11:21,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:11:21,472 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:11:21,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Narrowing.c [2024-11-20 22:11:22,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:11:23,134 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:11:23,135 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Narrowing.c [2024-11-20 22:11:23,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8683831/e7e7455d8f454e0eac6edd3872b92757/FLAG668417cfc [2024-11-20 22:11:23,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa8683831/e7e7455d8f454e0eac6edd3872b92757 [2024-11-20 22:11:23,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:11:23,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:11:23,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:11:23,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:11:23,530 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:11:23,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560ebb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23, skipping insertion in model container [2024-11-20 22:11:23,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:11:23,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:11:23,776 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:11:23,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:11:23,805 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:11:23,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23 WrapperNode [2024-11-20 22:11:23,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:11:23,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:11:23,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:11:23,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:11:23,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,828 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-11-20 22:11:23,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:11:23,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:11:23,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:11:23,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:11:23,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,843 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-20 22:11:23,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,850 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,851 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,852 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:11:23,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:11:23,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:11:23,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:11:23,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (1/1) ... [2024-11-20 22:11:23,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:23,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:23,882 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) [2024-11-20 22:11:23,884 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 [2024-11-20 22:11:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:11:23,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:11:24,013 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:11:24,019 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:11:24,104 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-20 22:11:24,104 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:11:24,115 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:11:24,115 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 22:11:24,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:11:24 BoogieIcfgContainer [2024-11-20 22:11:24,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:11:24,116 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-20 22:11:24,116 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-20 22:11:24,119 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-20 22:11:24,120 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:11:24,120 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:11:23" (1/3) ... [2024-11-20 22:11:24,121 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2856edc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:11:24, skipping insertion in model container [2024-11-20 22:11:24,121 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:11:24,121 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:11:23" (2/3) ... [2024-11-20 22:11:24,121 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2856edc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:11:24, skipping insertion in model container [2024-11-20 22:11:24,121 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:11:24,121 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:11:24" (3/3) ... [2024-11-20 22:11:24,123 INFO L332 chiAutomizerObserver]: Analyzing ICFG Narrowing.c [2024-11-20 22:11:24,171 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-20 22:11:24,172 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-20 22:11:24,172 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-20 22:11:24,172 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-20 22:11:24,172 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-20 22:11:24,172 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-20 22:11:24,172 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-20 22:11:24,172 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-20 22:11:24,176 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2024-11-20 22:11:24,188 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-20 22:11:24,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:24,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:24,192 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-20 22:11:24,192 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:24,193 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-20 22:11:24,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) [2024-11-20 22:11:24,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-11-20 22:11:24,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:24,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:24,194 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-20 22:11:24,194 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:24,199 INFO L745 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 4#L26-1true [2024-11-20 22:11:24,200 INFO L747 eck$LassoCheckResult]: Loop: 4#L26-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 11#L14true assume !(0 == main_~i~0#1); 12#L14-2true assume main_~i~0#1 == main_~range~0#1;main_~up~0#1 := 0; 9#L17-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 7#L20-1true assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 10#L23-1true assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4#L26-1true [2024-11-20 22:11:24,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-20 22:11:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233243610] [2024-11-20 22:11:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:24,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1217822514, now seen corresponding path program 1 times [2024-11-20 22:11:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761204247] [2024-11-20 22:11:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:24,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:24,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761204247] [2024-11-20 22:11:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761204247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:11:24,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:11:24,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:11:24,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172698924] [2024-11-20 22:11:24,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:11:24,406 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:11:24,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:11:24,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:11:24,433 INFO L87 Difference]: Start difference. First operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 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) 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) [2024-11-20 22:11:24,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:24,467 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2024-11-20 22:11:24,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 30 transitions. [2024-11-20 22:11:24,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-11-20 22:11:24,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 14 states and 23 transitions. [2024-11-20 22:11:24,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2024-11-20 22:11:24,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2024-11-20 22:11:24,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 23 transitions. [2024-11-20 22:11:24,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-20 22:11:24,475 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 23 transitions. [2024-11-20 22:11:24,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 23 transitions. [2024-11-20 22:11:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-20 22:11:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 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) [2024-11-20 22:11:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 23 transitions. [2024-11-20 22:11:24,494 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 23 transitions. [2024-11-20 22:11:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:11:24,499 INFO L425 stractBuchiCegarLoop]: Abstraction has 14 states and 23 transitions. [2024-11-20 22:11:24,499 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-20 22:11:24,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 23 transitions. [2024-11-20 22:11:24,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-11-20 22:11:24,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:24,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:24,501 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-20 22:11:24,501 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:24,501 INFO L745 eck$LassoCheckResult]: Stem: 43#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 44#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 48#L26-1 [2024-11-20 22:11:24,501 INFO L747 eck$LassoCheckResult]: Loop: 48#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 54#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 51#L14-2 assume main_~i~0#1 == main_~range~0#1;main_~up~0#1 := 0; 49#L17-1 assume !(1 == main_~up~0#1); 50#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 46#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 48#L26-1 [2024-11-20 22:11:24,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,502 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-11-20 22:11:24,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177042108] [2024-11-20 22:11:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,507 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:24,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1215977394, now seen corresponding path program 1 times [2024-11-20 22:11:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037421445] [2024-11-20 22:11:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037421445] [2024-11-20 22:11:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037421445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:11:24,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:11:24,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:11:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053243322] [2024-11-20 22:11:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:11:24,567 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:11:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:24,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:11:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:11:24,568 INFO L87 Difference]: Start difference. First operand 14 states and 23 transitions. cyclomatic complexity: 10 Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:11:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:24,628 INFO L93 Difference]: Finished difference Result 38 states and 61 transitions. [2024-11-20 22:11:24,628 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 61 transitions. [2024-11-20 22:11:24,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2024-11-20 22:11:24,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 38 states and 61 transitions. [2024-11-20 22:11:24,635 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2024-11-20 22:11:24,635 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2024-11-20 22:11:24,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 61 transitions. [2024-11-20 22:11:24,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-20 22:11:24,636 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 61 transitions. [2024-11-20 22:11:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 61 transitions. [2024-11-20 22:11:24,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-20 22:11:24,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 37 states have internal predecessors, (61), 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) [2024-11-20 22:11:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2024-11-20 22:11:24,642 INFO L240 hiAutomatonCegarLoop]: Abstraction has 38 states and 61 transitions. [2024-11-20 22:11:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:11:24,645 INFO L425 stractBuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2024-11-20 22:11:24,645 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-20 22:11:24,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 61 transitions. [2024-11-20 22:11:24,647 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2024-11-20 22:11:24,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:24,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:24,648 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-20 22:11:24,648 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:24,648 INFO L745 eck$LassoCheckResult]: Stem: 102#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 103#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 110#L26-1 [2024-11-20 22:11:24,649 INFO L747 eck$LassoCheckResult]: Loop: 110#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 125#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 119#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 115#L17-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 116#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 121#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 110#L26-1 [2024-11-20 22:11:24,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-11-20 22:11:24,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236947140] [2024-11-20 22:11:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:24,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1216035056, now seen corresponding path program 1 times [2024-11-20 22:11:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609992939] [2024-11-20 22:11:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:24,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609992939] [2024-11-20 22:11:24,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609992939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:11:24,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:11:24,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:11:24,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004255318] [2024-11-20 22:11:24,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:11:24,716 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:11:24,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:24,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:11:24,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:11:24,717 INFO L87 Difference]: Start difference. First operand 38 states and 61 transitions. cyclomatic complexity: 24 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) [2024-11-20 22:11:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:24,741 INFO L93 Difference]: Finished difference Result 38 states and 58 transitions. [2024-11-20 22:11:24,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 58 transitions. [2024-11-20 22:11:24,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2024-11-20 22:11:24,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 38 states and 58 transitions. [2024-11-20 22:11:24,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2024-11-20 22:11:24,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2024-11-20 22:11:24,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 58 transitions. [2024-11-20 22:11:24,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-20 22:11:24,747 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 58 transitions. [2024-11-20 22:11:24,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 58 transitions. [2024-11-20 22:11:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2024-11-20 22:11:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.53125) internal successors, (49), 31 states have internal predecessors, (49), 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) [2024-11-20 22:11:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 49 transitions. [2024-11-20 22:11:24,752 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 49 transitions. [2024-11-20 22:11:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:11:24,755 INFO L425 stractBuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2024-11-20 22:11:24,755 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-20 22:11:24,755 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 49 transitions. [2024-11-20 22:11:24,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2024-11-20 22:11:24,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:24,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:24,756 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-20 22:11:24,756 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:24,757 INFO L745 eck$LassoCheckResult]: Stem: 184#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 185#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 188#L26-1 [2024-11-20 22:11:24,757 INFO L747 eck$LassoCheckResult]: Loop: 188#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 199#L14 assume !(0 == main_~i~0#1); 205#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 203#L17-1 assume !(1 == main_~up~0#1); 202#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 200#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 188#L26-1 [2024-11-20 22:11:24,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-11-20 22:11:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935263172] [2024-11-20 22:11:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,769 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:24,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1217884020, now seen corresponding path program 1 times [2024-11-20 22:11:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926167680] [2024-11-20 22:11:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:24,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:24,793 INFO L85 PathProgramCache]: Analyzing trace with hash 297933238, now seen corresponding path program 1 times [2024-11-20 22:11:24,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:24,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739319056] [2024-11-20 22:11:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:24,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:24,808 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:24,924 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:11:24,925 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:11:24,925 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:11:24,925 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:11:24,925 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:11:24,925 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:24,926 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:11:24,926 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:11:24,926 INFO L132 ssoRankerPreferences]: Filename of dumped script: Narrowing.c_Iteration4_Loop [2024-11-20 22:11:24,926 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:11:24,926 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:11:24,940 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:24,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:24,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:24,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:25,079 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:11:25,079 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:11:25,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:25,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:25,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:11:25,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-20 22:11:25,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:11:25,088 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:25,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-20 22:11:25,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:25,118 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:11:25,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-20 22:11:25,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:11:25,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:25,154 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:11:25,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-20 22:11:25,160 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:11:25,160 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:11:25,160 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:11:25,160 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:11:25,160 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:11:25,160 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:25,160 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:11:25,160 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:11:25,161 INFO L132 ssoRankerPreferences]: Filename of dumped script: Narrowing.c_Iteration4_Loop [2024-11-20 22:11:25,161 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:11:25,161 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:11:25,163 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:25,179 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:25,183 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:25,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:25,276 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:11:25,281 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:11:25,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:25,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:25,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:11:25,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-20 22:11:25,293 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 [2024-11-20 22:11:25,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:11:25,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:11:25,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:11:25,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:11:25,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:11:25,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:11:25,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:11:25,314 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:11:25,324 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:11:25,324 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:11:25,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:25,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:25,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:11:25,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-20 22:11:25,350 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:11:25,350 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:11:25,351 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:11:25,351 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2024-11-20 22:11:25,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-20 22:11:25,362 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:11:25,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:25,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:11:25,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:25,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:11:25,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:25,490 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-20 22:11:25,492 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 49 transitions. cyclomatic complexity: 18 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-11-20 22:11:25,553 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 49 transitions. cyclomatic complexity: 18. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 100 states and 152 transitions. Complement of second has 7 states. [2024-11-20 22:11:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-20 22:11:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2024-11-20 22:11:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2024-11-20 22:11:25,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 6 letters. [2024-11-20 22:11:25,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:25,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 6 letters. [2024-11-20 22:11:25,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:25,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 12 letters. [2024-11-20 22:11:25,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:25,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 152 transitions. [2024-11-20 22:11:25,566 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 60 [2024-11-20 22:11:25,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 100 states and 152 transitions. [2024-11-20 22:11:25,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2024-11-20 22:11:25,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-11-20 22:11:25,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 100 states and 152 transitions. [2024-11-20 22:11:25,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:25,568 INFO L218 hiAutomatonCegarLoop]: Abstraction has 100 states and 152 transitions. [2024-11-20 22:11:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states and 152 transitions. [2024-11-20 22:11:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2024-11-20 22:11:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 89 states have (on average 1.550561797752809) internal successors, (138), 88 states have internal predecessors, (138), 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) [2024-11-20 22:11:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 138 transitions. [2024-11-20 22:11:25,580 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 138 transitions. [2024-11-20 22:11:25,580 INFO L425 stractBuchiCegarLoop]: Abstraction has 89 states and 138 transitions. [2024-11-20 22:11:25,580 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-20 22:11:25,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 138 transitions. [2024-11-20 22:11:25,583 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 54 [2024-11-20 22:11:25,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:25,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:25,583 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-20 22:11:25,583 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:25,584 INFO L745 eck$LassoCheckResult]: Stem: 365#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 366#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 376#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 384#L14 [2024-11-20 22:11:25,584 INFO L747 eck$LassoCheckResult]: Loop: 384#L14 assume !(0 == main_~i~0#1); 435#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 431#L17-1 assume !(1 == main_~up~0#1); 428#L20-1 assume !(0 == main_~up~0#1); 424#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 423#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 384#L14 [2024-11-20 22:11:25,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-11-20 22:11:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928981278] [2024-11-20 22:11:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,591 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:25,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1366755632, now seen corresponding path program 1 times [2024-11-20 22:11:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201381911] [2024-11-20 22:11:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,602 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:25,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash 645997719, now seen corresponding path program 1 times [2024-11-20 22:11:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303229894] [2024-11-20 22:11:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:25,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:25,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303229894] [2024-11-20 22:11:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303229894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:11:25,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:11:25,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:11:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446347616] [2024-11-20 22:11:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:11:25,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-20 22:11:25,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:11:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:11:25,747 INFO L87 Difference]: Start difference. First operand 89 states and 138 transitions. cyclomatic complexity: 54 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2024-11-20 22:11:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:25,761 INFO L93 Difference]: Finished difference Result 77 states and 112 transitions. [2024-11-20 22:11:25,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 112 transitions. [2024-11-20 22:11:25,762 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 38 [2024-11-20 22:11:25,766 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 71 states and 102 transitions. [2024-11-20 22:11:25,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2024-11-20 22:11:25,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2024-11-20 22:11:25,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 102 transitions. [2024-11-20 22:11:25,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:25,769 INFO L218 hiAutomatonCegarLoop]: Abstraction has 71 states and 102 transitions. [2024-11-20 22:11:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 102 transitions. [2024-11-20 22:11:25,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2024-11-20 22:11:25,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 64 states have internal predecessors, (94), 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) [2024-11-20 22:11:25,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 94 transitions. [2024-11-20 22:11:25,776 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 94 transitions. [2024-11-20 22:11:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:11:25,781 INFO L425 stractBuchiCegarLoop]: Abstraction has 65 states and 94 transitions. [2024-11-20 22:11:25,781 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-20 22:11:25,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 94 transitions. [2024-11-20 22:11:25,782 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 35 [2024-11-20 22:11:25,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:25,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:25,782 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-20 22:11:25,782 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:25,783 INFO L745 eck$LassoCheckResult]: Stem: 539#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 540#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 550#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 568#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 582#L14-2 [2024-11-20 22:11:25,783 INFO L747 eck$LassoCheckResult]: Loop: 582#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 593#L17-1 assume !(1 == main_~up~0#1); 591#L20-1 assume !(0 == main_~up~0#1); 588#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 535#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 536#L14 assume !(0 == main_~i~0#1); 582#L14-2 [2024-11-20 22:11:25,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-11-20 22:11:25,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874604310] [2024-11-20 22:11:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:25,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1544255282, now seen corresponding path program 2 times [2024-11-20 22:11:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790619183] [2024-11-20 22:11:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:25,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1071052759, now seen corresponding path program 1 times [2024-11-20 22:11:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620127763] [2024-11-20 22:11:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620127763] [2024-11-20 22:11:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620127763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:11:25,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:11:25,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:11:25,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013852692] [2024-11-20 22:11:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:11:25,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:11:25,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:11:25,896 INFO L87 Difference]: Start difference. First operand 65 states and 94 transitions. cyclomatic complexity: 33 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2024-11-20 22:11:25,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:25,910 INFO L93 Difference]: Finished difference Result 49 states and 66 transitions. [2024-11-20 22:11:25,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 66 transitions. [2024-11-20 22:11:25,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2024-11-20 22:11:25,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 47 states and 64 transitions. [2024-11-20 22:11:25,913 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2024-11-20 22:11:25,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2024-11-20 22:11:25,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 64 transitions. [2024-11-20 22:11:25,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:25,914 INFO L218 hiAutomatonCegarLoop]: Abstraction has 47 states and 64 transitions. [2024-11-20 22:11:25,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 64 transitions. [2024-11-20 22:11:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2024-11-20 22:11:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.380952380952381) internal successors, (58), 41 states have internal predecessors, (58), 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) [2024-11-20 22:11:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2024-11-20 22:11:25,920 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 58 transitions. [2024-11-20 22:11:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:11:25,922 INFO L425 stractBuchiCegarLoop]: Abstraction has 42 states and 58 transitions. [2024-11-20 22:11:25,922 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-20 22:11:25,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 58 transitions. [2024-11-20 22:11:25,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2024-11-20 22:11:25,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:25,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:25,923 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-20 22:11:25,923 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:25,923 INFO L745 eck$LassoCheckResult]: Stem: 661#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 662#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 675#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 658#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 676#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 682#L17-1 [2024-11-20 22:11:25,923 INFO L747 eck$LassoCheckResult]: Loop: 682#L17-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 663#L20-1 assume !(0 == main_~up~0#1); 664#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 689#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 690#L14 assume !(0 == main_~i~0#1); 684#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 682#L17-1 [2024-11-20 22:11:25,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,924 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2024-11-20 22:11:25,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999178846] [2024-11-20 22:11:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:25,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1664464050, now seen corresponding path program 1 times [2024-11-20 22:11:25,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213895412] [2024-11-20 22:11:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:25,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1214361119, now seen corresponding path program 1 times [2024-11-20 22:11:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:25,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984789157] [2024-11-20 22:11:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:25,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:25,946 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:26,009 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:11:26,009 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:11:26,009 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:11:26,009 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:11:26,009 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:11:26,010 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,010 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:11:26,010 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:11:26,010 INFO L132 ssoRankerPreferences]: Filename of dumped script: Narrowing.c_Iteration7_Loop [2024-11-20 22:11:26,010 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:11:26,010 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:11:26,011 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:26,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:26,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:26,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:26,131 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:11:26,132 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:11:26,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:11:26,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-20 22:11:26,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:11:26,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:26,161 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:11:26,162 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: [] [2024-11-20 22:11:26,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-20 22:11:26,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,172 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) [2024-11-20 22:11:26,173 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 [2024-11-20 22:11:26,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:11:26,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:26,198 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:11:26,199 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: [] [2024-11-20 22:11:26,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-20 22:11:26,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,210 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) [2024-11-20 22:11:26,211 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 [2024-11-20 22:11:26,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:11:26,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:26,229 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:11:26,230 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:11:26,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-20 22:11:26,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,240 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) [2024-11-20 22:11:26,243 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 [2024-11-20 22:11:26,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:11:26,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:26,268 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 [2024-11-20 22:11:26,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,285 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) [2024-11-20 22:11:26,288 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 [2024-11-20 22:11:26,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:11:26,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:26,446 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:11:26,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-20 22:11:26,455 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:11:26,455 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:11:26,455 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:11:26,455 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:11:26,455 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:11:26,455 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,455 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:11:26,455 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:11:26,455 INFO L132 ssoRankerPreferences]: Filename of dumped script: Narrowing.c_Iteration7_Loop [2024-11-20 22:11:26,456 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:11:26,456 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:11:26,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:26,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:26,468 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:26,475 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:26,669 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:11:26,670 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:11:26,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,674 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) [2024-11-20 22:11:26,675 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 [2024-11-20 22:11:26,676 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 [2024-11-20 22:11:26,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:11:26,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:11:26,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:11:26,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:11:26,693 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-20 22:11:26,693 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-20 22:11:26,697 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:11:26,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-20 22:11:26,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,708 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) [2024-11-20 22:11:26,710 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 [2024-11-20 22:11:26,711 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 [2024-11-20 22:11:26,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:11:26,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:11:26,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:11:26,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:11:26,726 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-20 22:11:26,726 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-20 22:11:26,730 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:11:26,737 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 [2024-11-20 22:11:26,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,740 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) [2024-11-20 22:11:26,746 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 [2024-11-20 22:11:26,747 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 [2024-11-20 22:11:26,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:11:26,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:11:26,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:11:26,760 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:11:26,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:11:26,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:11:26,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:11:26,762 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:11:26,770 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 [2024-11-20 22:11:26,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,773 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) [2024-11-20 22:11:26,776 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 [2024-11-20 22:11:26,777 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 [2024-11-20 22:11:26,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:11:26,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:11:26,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:11:26,790 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-11-20 22:11:26,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:11:26,792 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2024-11-20 22:11:26,792 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:11:26,799 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:11:26,802 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:11:26,802 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-20 22:11:26,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:26,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:26,807 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) [2024-11-20 22:11:26,809 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 [2024-11-20 22:11:26,810 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:11:26,810 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:11:26,810 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:11:26,811 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~range~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~range~0#1 Supporting invariants [] [2024-11-20 22:11:26,818 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 [2024-11-20 22:11:26,820 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:11:26,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:26,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:11:26,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:26,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:11:26,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:26,914 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-20 22:11:26,915 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 58 transitions. cyclomatic complexity: 18 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-20 22:11:26,964 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 58 transitions. cyclomatic complexity: 18. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Result 91 states and 124 transitions. Complement of second has 7 states. [2024-11-20 22:11:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-20 22:11:26,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-11-20 22:11:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2024-11-20 22:11:26,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 5 letters. Loop has 6 letters. [2024-11-20 22:11:26,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:26,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 11 letters. Loop has 6 letters. [2024-11-20 22:11:26,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:26,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 5 letters. Loop has 12 letters. [2024-11-20 22:11:26,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:26,969 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 124 transitions. [2024-11-20 22:11:26,970 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2024-11-20 22:11:26,972 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 78 states and 107 transitions. [2024-11-20 22:11:26,972 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-11-20 22:11:26,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2024-11-20 22:11:26,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 107 transitions. [2024-11-20 22:11:26,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:26,972 INFO L218 hiAutomatonCegarLoop]: Abstraction has 78 states and 107 transitions. [2024-11-20 22:11:26,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 107 transitions. [2024-11-20 22:11:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2024-11-20 22:11:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 71 states have internal predecessors, (101), 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) [2024-11-20 22:11:26,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2024-11-20 22:11:26,977 INFO L240 hiAutomatonCegarLoop]: Abstraction has 72 states and 101 transitions. [2024-11-20 22:11:26,977 INFO L425 stractBuchiCegarLoop]: Abstraction has 72 states and 101 transitions. [2024-11-20 22:11:26,977 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-20 22:11:26,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states and 101 transitions. [2024-11-20 22:11:26,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2024-11-20 22:11:26,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:26,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:26,978 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:11:26,979 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2024-11-20 22:11:26,979 INFO L745 eck$LassoCheckResult]: Stem: 851#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 852#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 863#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 903#L14 assume !(0 == main_~i~0#1); 904#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 861#L17-1 assume !(1 == main_~up~0#1); 862#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 894#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 895#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 917#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 916#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 915#L17-1 [2024-11-20 22:11:26,979 INFO L747 eck$LassoCheckResult]: Loop: 915#L17-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 914#L20-1 assume !(0 == main_~up~0#1); 857#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 858#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 882#L14 assume !(0 == main_~i~0#1); 880#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 915#L17-1 [2024-11-20 22:11:26,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1968356129, now seen corresponding path program 1 times [2024-11-20 22:11:26,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:26,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464938249] [2024-11-20 22:11:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:26,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:27,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:27,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464938249] [2024-11-20 22:11:27,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464938249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:11:27,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506986064] [2024-11-20 22:11:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:27,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:11:27,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,025 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:11:27,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 22:11:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:27,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 22:11:27,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:27,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:27,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:11:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:27,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506986064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:11:27,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:11:27,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-20 22:11:27,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738393361] [2024-11-20 22:11:27,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:11:27,102 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:11:27,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1664464050, now seen corresponding path program 2 times [2024-11-20 22:11:27,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:27,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602065918] [2024-11-20 22:11:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:27,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:27,113 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:27,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:27,185 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:11:27,185 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:11:27,185 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:11:27,185 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:11:27,185 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:11:27,185 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,185 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:11:27,186 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:11:27,186 INFO L132 ssoRankerPreferences]: Filename of dumped script: Narrowing.c_Iteration8_Loop [2024-11-20 22:11:27,186 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:11:27,186 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:11:27,187 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:27,190 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:27,196 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:27,206 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:27,331 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:11:27,332 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:11:27,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,336 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) [2024-11-20 22:11:27,339 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 [2024-11-20 22:11:27,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:11:27,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:27,359 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:11:27,360 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:11:27,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-20 22:11:27,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,367 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) [2024-11-20 22:11:27,368 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 [2024-11-20 22:11:27,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:11:27,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:27,381 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:11:27,382 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:11:27,388 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 [2024-11-20 22:11:27,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,390 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) [2024-11-20 22:11:27,391 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 [2024-11-20 22:11:27,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:11:27,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:27,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-20 22:11:27,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,411 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) [2024-11-20 22:11:27,414 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 [2024-11-20 22:11:27,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:11:27,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:11:27,563 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:11:27,570 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 [2024-11-20 22:11:27,570 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:11:27,570 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:11:27,570 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:11:27,570 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:11:27,570 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:11:27,570 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,570 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:11:27,571 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:11:27,571 INFO L132 ssoRankerPreferences]: Filename of dumped script: Narrowing.c_Iteration8_Loop [2024-11-20 22:11:27,571 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:11:27,571 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:11:27,572 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:27,580 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:27,583 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:27,596 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:11:27,697 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:11:27,697 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:11:27,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,733 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) [2024-11-20 22:11:27,736 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 [2024-11-20 22:11:27,742 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 [2024-11-20 22:11:27,754 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:11:27,754 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:11:27,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:11:27,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:11:27,755 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:11:27,755 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:11:27,755 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:11:27,757 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:11:27,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-20 22:11:27,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,766 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) [2024-11-20 22:11:27,770 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 [2024-11-20 22:11:27,771 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 [2024-11-20 22:11:27,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:11:27,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:11:27,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:11:27,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:11:27,786 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-20 22:11:27,786 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-20 22:11:27,789 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:11:27,797 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 [2024-11-20 22:11:27,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,799 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) [2024-11-20 22:11:27,801 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 [2024-11-20 22:11:27,805 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 [2024-11-20 22:11:27,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:11:27,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:11:27,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:11:27,817 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-11-20 22:11:27,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:11:27,819 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2024-11-20 22:11:27,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:11:27,823 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:11:27,827 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-11-20 22:11:27,828 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:11:27,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:11:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:27,833 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) [2024-11-20 22:11:27,834 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:11:27,835 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:11:27,835 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:11:27,835 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~range~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~range~0#1 Supporting invariants [] [2024-11-20 22:11:27,839 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 [2024-11-20 22:11:27,843 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 [2024-11-20 22:11:27,845 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:11:27,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:27,880 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 [2024-11-20 22:11:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:27,887 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 [2024-11-20 22:11:27,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:11:27,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:27,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:11:27,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:27,953 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-20 22:11:27,953 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states and 101 transitions. cyclomatic complexity: 34 Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:11:27,990 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states and 101 transitions. cyclomatic complexity: 34. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 96 states and 136 transitions. Complement of second has 7 states. [2024-11-20 22:11:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-20 22:11:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:11:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2024-11-20 22:11:27,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 11 letters. Loop has 6 letters. [2024-11-20 22:11:27,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:27,993 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:11:28,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:28,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:11:28,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:28,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:11:28,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:28,061 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-20 22:11:28,061 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states and 101 transitions. cyclomatic complexity: 34 Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:11:28,108 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states and 101 transitions. cyclomatic complexity: 34. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 125 states and 174 transitions. Complement of second has 9 states. [2024-11-20 22:11:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-20 22:11:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:11:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2024-11-20 22:11:28,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 11 letters. Loop has 6 letters. [2024-11-20 22:11:28,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:28,111 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:11:28,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:28,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 22:11:28,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:28,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:11:28,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:28,177 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 3 loop predicates [2024-11-20 22:11:28,177 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states and 101 transitions. cyclomatic complexity: 34 Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:11:28,207 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states and 101 transitions. cyclomatic complexity: 34. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 113 states and 165 transitions. Complement of second has 8 states. [2024-11-20 22:11:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-20 22:11:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:11:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2024-11-20 22:11:28,210 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 11 letters. Loop has 6 letters. [2024-11-20 22:11:28,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:28,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 17 letters. Loop has 6 letters. [2024-11-20 22:11:28,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:28,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 11 letters. Loop has 12 letters. [2024-11-20 22:11:28,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:11:28,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 165 transitions. [2024-11-20 22:11:28,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2024-11-20 22:11:28,218 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 85 states and 121 transitions. [2024-11-20 22:11:28,218 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2024-11-20 22:11:28,218 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2024-11-20 22:11:28,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 121 transitions. [2024-11-20 22:11:28,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:28,218 INFO L218 hiAutomatonCegarLoop]: Abstraction has 85 states and 121 transitions. [2024-11-20 22:11:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states and 121 transitions. [2024-11-20 22:11:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 50. [2024-11-20 22:11:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.46) internal successors, (73), 49 states have internal predecessors, (73), 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) [2024-11-20 22:11:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 73 transitions. [2024-11-20 22:11:28,226 INFO L240 hiAutomatonCegarLoop]: Abstraction has 50 states and 73 transitions. [2024-11-20 22:11:28,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:11:28,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 22:11:28,229 INFO L87 Difference]: Start difference. First operand 50 states and 73 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:11:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:28,327 INFO L93 Difference]: Finished difference Result 209 states and 277 transitions. [2024-11-20 22:11:28,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 209 states and 277 transitions. [2024-11-20 22:11:28,329 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 82 [2024-11-20 22:11:28,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 209 states to 199 states and 266 transitions. [2024-11-20 22:11:28,332 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2024-11-20 22:11:28,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2024-11-20 22:11:28,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 199 states and 266 transitions. [2024-11-20 22:11:28,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:28,333 INFO L218 hiAutomatonCegarLoop]: Abstraction has 199 states and 266 transitions. [2024-11-20 22:11:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states and 266 transitions. [2024-11-20 22:11:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 174. [2024-11-20 22:11:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 1.3505747126436782) internal successors, (235), 173 states have internal predecessors, (235), 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) [2024-11-20 22:11:28,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 235 transitions. [2024-11-20 22:11:28,346 INFO L240 hiAutomatonCegarLoop]: Abstraction has 174 states and 235 transitions. [2024-11-20 22:11:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 22:11:28,347 INFO L425 stractBuchiCegarLoop]: Abstraction has 174 states and 235 transitions. [2024-11-20 22:11:28,350 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-11-20 22:11:28,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 235 transitions. [2024-11-20 22:11:28,351 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 79 [2024-11-20 22:11:28,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:28,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:28,352 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2024-11-20 22:11:28,352 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-20 22:11:28,354 INFO L745 eck$LassoCheckResult]: Stem: 1785#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1786#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 1791#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 1869#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1868#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 1851#L17-1 [2024-11-20 22:11:28,355 INFO L747 eck$LassoCheckResult]: Loop: 1851#L17-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1864#L20-1 assume !(0 == main_~up~0#1); 1862#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 1858#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 1853#L14 assume !(0 == main_~i~0#1); 1850#L14-2 assume main_~i~0#1 == main_~range~0#1;main_~up~0#1 := 0; 1840#L17-1 assume !(1 == main_~up~0#1); 1848#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 1849#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 1847#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 1845#L14 assume !(0 == main_~i~0#1); 1839#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 1836#L17-1 assume !(1 == main_~up~0#1); 1834#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 1831#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 1832#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 1843#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1844#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 1851#L17-1 [2024-11-20 22:11:28,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 2 times [2024-11-20 22:11:28,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:28,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636830615] [2024-11-20 22:11:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:28,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:28,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:28,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:28,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1874596340, now seen corresponding path program 1 times [2024-11-20 22:11:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:28,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757044992] [2024-11-20 22:11:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:28,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:28,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757044992] [2024-11-20 22:11:28,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757044992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:11:28,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274821064] [2024-11-20 22:11:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:28,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:11:28,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:28,525 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:11:28,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-20 22:11:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:28,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:11:28,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:28,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:11:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:28,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274821064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:11:28,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:11:28,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 11 [2024-11-20 22:11:28,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345790635] [2024-11-20 22:11:28,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:11:28,633 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:11:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:28,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 22:11:28,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-20 22:11:28,633 INFO L87 Difference]: Start difference. First operand 174 states and 235 transitions. cyclomatic complexity: 69 Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 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) [2024-11-20 22:11:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:28,795 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2024-11-20 22:11:28,795 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 114 states and 126 transitions. [2024-11-20 22:11:28,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2024-11-20 22:11:28,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 114 states to 108 states and 120 transitions. [2024-11-20 22:11:28,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2024-11-20 22:11:28,797 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2024-11-20 22:11:28,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 120 transitions. [2024-11-20 22:11:28,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:28,797 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 120 transitions. [2024-11-20 22:11:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 120 transitions. [2024-11-20 22:11:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 89. [2024-11-20 22:11:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 88 states have internal predecessors, (101), 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) [2024-11-20 22:11:28,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2024-11-20 22:11:28,804 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 101 transitions. [2024-11-20 22:11:28,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 22:11:28,808 INFO L425 stractBuchiCegarLoop]: Abstraction has 89 states and 101 transitions. [2024-11-20 22:11:28,808 INFO L332 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2024-11-20 22:11:28,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 101 transitions. [2024-11-20 22:11:28,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-20 22:11:28,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:28,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:28,809 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-20 22:11:28,809 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:11:28,809 INFO L745 eck$LassoCheckResult]: Stem: 2198#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 2199#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 2204#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2230#L14 assume !(0 == main_~i~0#1); 2228#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2226#L17-1 assume !(1 == main_~up~0#1); 2224#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2219#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2196#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2197#L14 assume !(0 == main_~i~0#1); 2214#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2207#L17-1 assume !(1 == main_~up~0#1); 2208#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2217#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2248#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2258#L14 assume !(0 == main_~i~0#1); 2256#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2254#L17-1 assume !(1 == main_~up~0#1); 2251#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2246#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2247#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2242#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2243#L14-2 [2024-11-20 22:11:28,809 INFO L747 eck$LassoCheckResult]: Loop: 2243#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2205#L17-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2206#L20-1 assume !(0 == main_~up~0#1); 2274#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 2273#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2272#L14 assume !(0 == main_~i~0#1); 2270#L14-2 assume main_~i~0#1 == main_~range~0#1;main_~up~0#1 := 0; 2269#L17-1 assume !(1 == main_~up~0#1); 2253#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2250#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 2244#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2245#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2243#L14-2 [2024-11-20 22:11:28,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:28,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2020896569, now seen corresponding path program 2 times [2024-11-20 22:11:28,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:28,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670454931] [2024-11-20 22:11:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:28,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:28,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:28,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670454931] [2024-11-20 22:11:28,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670454931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:11:28,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712062293] [2024-11-20 22:11:28,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:11:28,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:11:28,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:28,894 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:11:28,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-20 22:11:28,921 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:11:28,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:11:28,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:11:28,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:28,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:11:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712062293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:11:29,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:11:29,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 22:11:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449524461] [2024-11-20 22:11:29,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:11:29,016 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:11:29,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:29,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1010763299, now seen corresponding path program 2 times [2024-11-20 22:11:29,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:29,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540007377] [2024-11-20 22:11:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:29,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:29,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:29,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 22:11:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-20 22:11:29,075 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. cyclomatic complexity: 16 Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 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) [2024-11-20 22:11:29,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:29,241 INFO L93 Difference]: Finished difference Result 159 states and 171 transitions. [2024-11-20 22:11:29,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 171 transitions. [2024-11-20 22:11:29,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-20 22:11:29,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 151 states and 163 transitions. [2024-11-20 22:11:29,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2024-11-20 22:11:29,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2024-11-20 22:11:29,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 163 transitions. [2024-11-20 22:11:29,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:29,245 INFO L218 hiAutomatonCegarLoop]: Abstraction has 151 states and 163 transitions. [2024-11-20 22:11:29,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states and 163 transitions. [2024-11-20 22:11:29,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 137. [2024-11-20 22:11:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 137 states have (on average 1.0875912408759123) internal successors, (149), 136 states have internal predecessors, (149), 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) [2024-11-20 22:11:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2024-11-20 22:11:29,250 INFO L240 hiAutomatonCegarLoop]: Abstraction has 137 states and 149 transitions. [2024-11-20 22:11:29,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 22:11:29,253 INFO L425 stractBuchiCegarLoop]: Abstraction has 137 states and 149 transitions. [2024-11-20 22:11:29,253 INFO L332 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2024-11-20 22:11:29,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 137 states and 149 transitions. [2024-11-20 22:11:29,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-20 22:11:29,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:29,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:29,256 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 7, 7, 7, 7, 1, 1, 1] [2024-11-20 22:11:29,256 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:11:29,257 INFO L745 eck$LassoCheckResult]: Stem: 2604#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 2605#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 2616#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2639#L14 assume !(0 == main_~i~0#1); 2636#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2633#L17-1 assume !(1 == main_~up~0#1); 2630#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2625#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2624#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2726#L14 assume !(0 == main_~i~0#1); 2621#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2612#L17-1 assume !(1 == main_~up~0#1); 2613#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2622#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2723#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2722#L14 assume !(0 == main_~i~0#1); 2721#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2720#L17-1 assume !(1 == main_~up~0#1); 2719#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2718#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2717#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2716#L14 assume !(0 == main_~i~0#1); 2715#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2714#L17-1 assume !(1 == main_~up~0#1); 2713#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2712#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2711#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2710#L14 assume !(0 == main_~i~0#1); 2709#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2708#L17-1 assume !(1 == main_~up~0#1); 2707#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2706#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2705#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2704#L14 assume !(0 == main_~i~0#1); 2703#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2702#L17-1 assume !(1 == main_~up~0#1); 2701#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2700#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2656#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2697#L14 assume !(0 == main_~i~0#1); 2669#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2667#L17-1 assume !(1 == main_~up~0#1); 2659#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2654#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 2655#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2649#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2650#L14-2 [2024-11-20 22:11:29,259 INFO L747 eck$LassoCheckResult]: Loop: 2650#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 2610#L17-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2611#L20-1 assume !(0 == main_~up~0#1); 2665#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 2664#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2663#L14 assume !(0 == main_~i~0#1); 2662#L14-2 assume main_~i~0#1 == main_~range~0#1;main_~up~0#1 := 0; 2661#L17-1 assume !(1 == main_~up~0#1); 2660#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 2657#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 2651#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 2652#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2650#L14-2 [2024-11-20 22:11:29,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1325721725, now seen corresponding path program 3 times [2024-11-20 22:11:29,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:29,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77447257] [2024-11-20 22:11:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:29,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:29,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77447257] [2024-11-20 22:11:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77447257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:11:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797971205] [2024-11-20 22:11:29,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 22:11:29,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:11:29,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:29,433 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:11:29,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-20 22:11:29,520 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-20 22:11:29,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:11:29,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 22:11:29,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:29,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:11:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:29,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797971205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:11:29,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:11:29,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-20 22:11:29,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45375439] [2024-11-20 22:11:29,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:11:29,851 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:11:29,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1010763299, now seen corresponding path program 3 times [2024-11-20 22:11:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:29,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247546588] [2024-11-20 22:11:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:29,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:29,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:29,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:29,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:29,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 22:11:29,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2024-11-20 22:11:29,938 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. cyclomatic complexity: 16 Second operand has 19 states, 18 states have (on average 5.444444444444445) internal successors, (98), 19 states have internal predecessors, (98), 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) [2024-11-20 22:11:30,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:30,185 INFO L93 Difference]: Finished difference Result 263 states and 275 transitions. [2024-11-20 22:11:30,185 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 263 states and 275 transitions. [2024-11-20 22:11:30,187 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-20 22:11:30,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 263 states to 247 states and 259 transitions. [2024-11-20 22:11:30,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 136 [2024-11-20 22:11:30,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 136 [2024-11-20 22:11:30,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 247 states and 259 transitions. [2024-11-20 22:11:30,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:30,190 INFO L218 hiAutomatonCegarLoop]: Abstraction has 247 states and 259 transitions. [2024-11-20 22:11:30,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states and 259 transitions. [2024-11-20 22:11:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 233. [2024-11-20 22:11:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 233 states have (on average 1.0515021459227467) internal successors, (245), 232 states have internal predecessors, (245), 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) [2024-11-20 22:11:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 245 transitions. [2024-11-20 22:11:30,194 INFO L240 hiAutomatonCegarLoop]: Abstraction has 233 states and 245 transitions. [2024-11-20 22:11:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 22:11:30,195 INFO L425 stractBuchiCegarLoop]: Abstraction has 233 states and 245 transitions. [2024-11-20 22:11:30,195 INFO L332 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2024-11-20 22:11:30,195 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 233 states and 245 transitions. [2024-11-20 22:11:30,196 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-20 22:11:30,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:30,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:30,198 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [16, 15, 15, 15, 15, 15, 1, 1, 1] [2024-11-20 22:11:30,198 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:11:30,199 INFO L745 eck$LassoCheckResult]: Stem: 3322#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3323#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 3333#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3348#L14 assume !(0 == main_~i~0#1); 3346#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3345#L17-1 assume !(1 == main_~up~0#1); 3344#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3341#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3340#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3335#L14 assume !(0 == main_~i~0#1); 3336#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3332#L17-1 assume !(1 == main_~up~0#1); 3326#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3327#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3538#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3537#L14 assume !(0 == main_~i~0#1); 3536#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3535#L17-1 assume !(1 == main_~up~0#1); 3534#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3533#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3532#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3531#L14 assume !(0 == main_~i~0#1); 3530#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3529#L17-1 assume !(1 == main_~up~0#1); 3528#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3527#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3526#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3525#L14 assume !(0 == main_~i~0#1); 3524#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3523#L17-1 assume !(1 == main_~up~0#1); 3522#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3521#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3520#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3519#L14 assume !(0 == main_~i~0#1); 3518#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3517#L17-1 assume !(1 == main_~up~0#1); 3516#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3515#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3514#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3513#L14 assume !(0 == main_~i~0#1); 3512#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3511#L17-1 assume !(1 == main_~up~0#1); 3510#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3509#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3508#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3507#L14 assume !(0 == main_~i~0#1); 3506#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3505#L17-1 assume !(1 == main_~up~0#1); 3504#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3503#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3502#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3501#L14 assume !(0 == main_~i~0#1); 3500#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3499#L17-1 assume !(1 == main_~up~0#1); 3498#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3497#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3496#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3495#L14 assume !(0 == main_~i~0#1); 3494#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3493#L17-1 assume !(1 == main_~up~0#1); 3492#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3491#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3490#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3489#L14 assume !(0 == main_~i~0#1); 3488#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3487#L17-1 assume !(1 == main_~up~0#1); 3486#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3485#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3484#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3483#L14 assume !(0 == main_~i~0#1); 3482#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3481#L17-1 assume !(1 == main_~up~0#1); 3480#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3479#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3478#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3477#L14 assume !(0 == main_~i~0#1); 3476#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3475#L17-1 assume !(1 == main_~up~0#1); 3474#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3473#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3472#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3471#L14 assume !(0 == main_~i~0#1); 3470#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3469#L17-1 assume !(1 == main_~up~0#1); 3468#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3467#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3371#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3390#L14 assume !(0 == main_~i~0#1); 3388#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3383#L17-1 assume !(1 == main_~up~0#1); 3375#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3370#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 3372#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3366#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 3367#L14-2 [2024-11-20 22:11:30,199 INFO L747 eck$LassoCheckResult]: Loop: 3367#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 3330#L17-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3331#L20-1 assume !(0 == main_~up~0#1); 3382#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 3381#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3380#L14 assume !(0 == main_~i~0#1); 3379#L14-2 assume main_~i~0#1 == main_~range~0#1;main_~up~0#1 := 0; 3378#L17-1 assume !(1 == main_~up~0#1); 3377#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 3374#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 3368#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 3369#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 3367#L14-2 [2024-11-20 22:11:30,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash -944359675, now seen corresponding path program 4 times [2024-11-20 22:11:30,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:30,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17432930] [2024-11-20 22:11:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:30,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:11:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:30,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:11:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17432930] [2024-11-20 22:11:30,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17432930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:11:30,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458130647] [2024-11-20 22:11:30,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 22:11:30,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:11:30,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:11:30,577 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:11:30,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-20 22:11:30,629 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 22:11:30,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:11:30,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 22:11:30,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:11:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:30,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:11:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:11:31,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458130647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:11:31,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:11:31,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 22 [2024-11-20 22:11:31,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284368592] [2024-11-20 22:11:31,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:11:31,089 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:11:31,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1010763299, now seen corresponding path program 4 times [2024-11-20 22:11:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338473706] [2024-11-20 22:11:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:31,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:31,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:31,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:31,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:11:31,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 22:11:31,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=307, Unknown=0, NotChecked=0, Total=506 [2024-11-20 22:11:31,150 INFO L87 Difference]: Start difference. First operand 233 states and 245 transitions. cyclomatic complexity: 16 Second operand has 23 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 23 states have internal predecessors, (127), 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) [2024-11-20 22:11:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:11:31,362 INFO L93 Difference]: Finished difference Result 303 states and 315 transitions. [2024-11-20 22:11:31,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 303 states and 315 transitions. [2024-11-20 22:11:31,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-20 22:11:31,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 303 states to 295 states and 307 transitions. [2024-11-20 22:11:31,366 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 160 [2024-11-20 22:11:31,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 160 [2024-11-20 22:11:31,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 295 states and 307 transitions. [2024-11-20 22:11:31,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:11:31,366 INFO L218 hiAutomatonCegarLoop]: Abstraction has 295 states and 307 transitions. [2024-11-20 22:11:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states and 307 transitions. [2024-11-20 22:11:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 281. [2024-11-20 22:11:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 281 states have (on average 1.0427046263345197) internal successors, (293), 280 states have internal predecessors, (293), 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) [2024-11-20 22:11:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 293 transitions. [2024-11-20 22:11:31,370 INFO L240 hiAutomatonCegarLoop]: Abstraction has 281 states and 293 transitions. [2024-11-20 22:11:31,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 22:11:31,371 INFO L425 stractBuchiCegarLoop]: Abstraction has 281 states and 293 transitions. [2024-11-20 22:11:31,371 INFO L332 stractBuchiCegarLoop]: ======== Iteration 13 ============ [2024-11-20 22:11:31,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 281 states and 293 transitions. [2024-11-20 22:11:31,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2024-11-20 22:11:31,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:11:31,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:11:31,374 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [20, 19, 19, 19, 19, 19, 1, 1, 1] [2024-11-20 22:11:31,374 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:11:31,374 INFO L745 eck$LassoCheckResult]: Stem: 4460#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 4461#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~range~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~range~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~range~0#1 := 20;main_~up~0#1 := 0; 4466#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4486#L14 assume !(0 == main_~i~0#1); 4484#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4483#L17-1 assume !(1 == main_~up~0#1); 4482#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4479#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4478#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4474#L14 assume !(0 == main_~i~0#1); 4475#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4469#L17-1 assume !(1 == main_~up~0#1); 4470#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4476#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4621#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4620#L14 assume !(0 == main_~i~0#1); 4619#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4618#L17-1 assume !(1 == main_~up~0#1); 4617#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4616#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4615#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4614#L14 assume !(0 == main_~i~0#1); 4613#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4612#L17-1 assume !(1 == main_~up~0#1); 4611#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4610#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4609#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4608#L14 assume !(0 == main_~i~0#1); 4607#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4606#L17-1 assume !(1 == main_~up~0#1); 4605#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4604#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4603#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4602#L14 assume !(0 == main_~i~0#1); 4601#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4600#L17-1 assume !(1 == main_~up~0#1); 4599#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4598#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4597#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4596#L14 assume !(0 == main_~i~0#1); 4595#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4594#L17-1 assume !(1 == main_~up~0#1); 4593#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4592#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4591#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4590#L14 assume !(0 == main_~i~0#1); 4589#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4588#L17-1 assume !(1 == main_~up~0#1); 4587#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4586#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4585#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4584#L14 assume !(0 == main_~i~0#1); 4583#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4582#L17-1 assume !(1 == main_~up~0#1); 4581#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4580#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4579#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4578#L14 assume !(0 == main_~i~0#1); 4577#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4576#L17-1 assume !(1 == main_~up~0#1); 4575#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4574#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4573#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4572#L14 assume !(0 == main_~i~0#1); 4571#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4570#L17-1 assume !(1 == main_~up~0#1); 4569#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4568#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4567#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4566#L14 assume !(0 == main_~i~0#1); 4565#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4564#L17-1 assume !(1 == main_~up~0#1); 4563#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4562#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4561#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4560#L14 assume !(0 == main_~i~0#1); 4559#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4558#L17-1 assume !(1 == main_~up~0#1); 4557#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4556#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4555#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4554#L14 assume !(0 == main_~i~0#1); 4553#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4552#L17-1 assume !(1 == main_~up~0#1); 4551#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4550#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4549#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4548#L14 assume !(0 == main_~i~0#1); 4547#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4546#L17-1 assume !(1 == main_~up~0#1); 4545#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4544#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4543#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4542#L14 assume !(0 == main_~i~0#1); 4541#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4540#L17-1 assume !(1 == main_~up~0#1); 4539#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4538#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4537#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4536#L14 assume !(0 == main_~i~0#1); 4535#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4534#L17-1 assume !(1 == main_~up~0#1); 4533#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4532#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4531#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4530#L14 assume !(0 == main_~i~0#1); 4529#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4528#L17-1 assume !(1 == main_~up~0#1); 4527#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4526#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4501#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4513#L14 assume !(0 == main_~i~0#1); 4509#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4506#L17-1 assume !(1 == main_~up~0#1); 4503#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4500#L23-1 assume main_~i~0#1 == main_~range~0#1 - 2;main_~range~0#1 := main_~range~0#1 - 1; 4502#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4511#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4512#L14-2 [2024-11-20 22:11:31,374 INFO L747 eck$LassoCheckResult]: Loop: 4512#L14-2 assume !(main_~i~0#1 == main_~range~0#1); 4504#L17-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4505#L20-1 assume !(0 == main_~up~0#1); 4524#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 4523#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4522#L14 assume !(0 == main_~i~0#1); 4521#L14-2 assume main_~i~0#1 == main_~range~0#1;main_~up~0#1 := 0; 4520#L17-1 assume !(1 == main_~up~0#1); 4519#L20-1 assume 0 == main_~up~0#1;main_~i~0#1 := main_~i~0#1 - 1; 4517#L23-1 assume !(main_~i~0#1 == main_~range~0#1 - 2); 4514#L26-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= main_~range~0#1); 4515#L14 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4512#L14-2 [2024-11-20 22:11:31,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash 228527177, now seen corresponding path program 5 times [2024-11-20 22:11:31,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:31,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732012068] [2024-11-20 22:11:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:31,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:31,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:31,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1010763299, now seen corresponding path program 5 times [2024-11-20 22:11:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:31,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026372177] [2024-11-20 22:11:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:31,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:31,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:31,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:31,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:11:31,430 INFO L85 PathProgramCache]: Analyzing trace with hash 210101867, now seen corresponding path program 1 times [2024-11-20 22:11:31,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:11:31,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497333986] [2024-11-20 22:11:31,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:11:31,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:11:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:31,453 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:31,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:11:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:32,454 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:11:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:11:32,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:11:32 BoogieIcfgContainer [2024-11-20 22:11:32,567 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-20 22:11:32,568 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 22:11:32,568 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 22:11:32,568 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 22:11:32,569 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:11:24" (3/4) ... [2024-11-20 22:11:32,571 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-20 22:11:32,642 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 22:11:32,642 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 22:11:32,643 INFO L158 Benchmark]: Toolchain (without parser) took 9122.43ms. Allocated memory was 192.9MB in the beginning and 245.4MB in the end (delta: 52.4MB). Free memory was 123.9MB in the beginning and 211.0MB in the end (delta: -87.1MB). Peak memory consumption was 102.3MB. Max. memory is 16.1GB. [2024-11-20 22:11:32,643 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 192.9MB. Free memory is still 168.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:11:32,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.46ms. Allocated memory is still 192.9MB. Free memory was 123.7MB in the beginning and 157.9MB in the end (delta: -34.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-20 22:11:32,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.09ms. Allocated memory is still 192.9MB. Free memory was 157.9MB in the beginning and 156.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:11:32,643 INFO L158 Benchmark]: Boogie Preprocessor took 22.74ms. Allocated memory is still 192.9MB. Free memory was 156.2MB in the beginning and 154.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:11:32,644 INFO L158 Benchmark]: RCFGBuilder took 259.04ms. Allocated memory is still 192.9MB. Free memory was 154.9MB in the beginning and 145.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-20 22:11:32,644 INFO L158 Benchmark]: BuchiAutomizer took 8451.29ms. Allocated memory was 192.9MB in the beginning and 245.4MB in the end (delta: 52.4MB). Free memory was 145.5MB in the beginning and 78.6MB in the end (delta: 67.0MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. [2024-11-20 22:11:32,644 INFO L158 Benchmark]: Witness Printer took 74.25ms. Allocated memory is still 245.4MB. Free memory was 78.6MB in the beginning and 211.0MB in the end (delta: -132.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 22:11:32,645 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 192.9MB. Free memory is still 168.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.46ms. Allocated memory is still 192.9MB. Free memory was 123.7MB in the beginning and 157.9MB in the end (delta: -34.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.09ms. Allocated memory is still 192.9MB. Free memory was 157.9MB in the beginning and 156.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.74ms. Allocated memory is still 192.9MB. Free memory was 156.2MB in the beginning and 154.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 259.04ms. Allocated memory is still 192.9MB. Free memory was 154.9MB in the beginning and 145.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 8451.29ms. Allocated memory was 192.9MB in the beginning and 245.4MB in the end (delta: 52.4MB). Free memory was 145.5MB in the beginning and 78.6MB in the end (delta: 67.0MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. * Witness Printer took 74.25ms. Allocated memory is still 245.4MB. Free memory was 78.6MB in the beginning and 211.0MB in the end (delta: -132.5MB). Peak memory consumption was 4.2MB. 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 13 terminating modules (10 trivial, 2 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function (((long) -1 * i) + range) and consists of 4 locations. One nondeterministic module has affine ranking function (((long) -1 * i) + range) and consists of 4 locations. 10 modules have a trivial ranking function, the largest among these consists of 23 locations. The remainder module has 281 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.3s and 13 iterations. TraceHistogramMax:20. Analysis of lassos took 6.2s. Construction of modules took 0.6s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 155 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 500 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 495 mSDsluCounter, 355 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 186 mSDsCounter, 110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 789 IncrementalHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 110 mSolverCounterUnsat, 169 mSDtfsCounter, 789 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT2 conc2 concLT0 SILN3 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital30 mio100 ax139 hnf100 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq174 hnf97 smp57 dnf135 smp95 tf106 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int range; [L8] int up; [L9] i = __VERIFIER_nondet_int() [L10] range = 20 [L11] up = 0 VAL [range=20, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=19, range=20, up=0] [L14] COND FALSE !(i == 0) VAL [i=19, range=20, up=0] [L17] COND FALSE !(i == range) VAL [i=19, range=20, up=0] [L20] COND FALSE !(up == 1) VAL [i=19, range=20, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=18, range=20, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=18, range=19, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=18, range=19, up=0] [L14] COND FALSE !(i == 0) VAL [i=18, range=19, up=0] [L17] COND FALSE !(i == range) VAL [i=18, range=19, up=0] [L20] COND FALSE !(up == 1) VAL [i=18, range=19, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=17, range=19, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=17, range=18, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=17, range=18, up=0] [L14] COND FALSE !(i == 0) VAL [i=17, range=18, up=0] [L17] COND FALSE !(i == range) VAL [i=17, range=18, up=0] [L20] COND FALSE !(up == 1) VAL [i=17, range=18, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=16, range=18, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=16, range=17, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=16, range=17, up=0] [L14] COND FALSE !(i == 0) VAL [i=16, range=17, up=0] [L17] COND FALSE !(i == range) VAL [i=16, range=17, up=0] [L20] COND FALSE !(up == 1) VAL [i=16, range=17, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=15, range=17, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=15, range=16, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=15, range=16, up=0] [L14] COND FALSE !(i == 0) VAL [i=15, range=16, up=0] [L17] COND FALSE !(i == range) VAL [i=15, range=16, up=0] [L20] COND FALSE !(up == 1) VAL [i=15, range=16, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=14, range=16, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=14, range=15, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=14, range=15, up=0] [L14] COND FALSE !(i == 0) VAL [i=14, range=15, up=0] [L17] COND FALSE !(i == range) VAL [i=14, range=15, up=0] [L20] COND FALSE !(up == 1) VAL [i=14, range=15, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=13, range=15, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=13, range=14, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=13, range=14, up=0] [L14] COND FALSE !(i == 0) VAL [i=13, range=14, up=0] [L17] COND FALSE !(i == range) VAL [i=13, range=14, up=0] [L20] COND FALSE !(up == 1) VAL [i=13, range=14, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=12, range=14, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=12, range=13, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=12, range=13, up=0] [L14] COND FALSE !(i == 0) VAL [i=12, range=13, up=0] [L17] COND FALSE !(i == range) VAL [i=12, range=13, up=0] [L20] COND FALSE !(up == 1) VAL [i=12, range=13, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=11, range=13, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=11, range=12, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=11, range=12, up=0] [L14] COND FALSE !(i == 0) VAL [i=11, range=12, up=0] [L17] COND FALSE !(i == range) VAL [i=11, range=12, up=0] [L20] COND FALSE !(up == 1) VAL [i=11, range=12, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=10, range=12, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=10, range=11, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=10, range=11, up=0] [L14] COND FALSE !(i == 0) VAL [i=10, range=11, up=0] [L17] COND FALSE !(i == range) VAL [i=10, range=11, up=0] [L20] COND FALSE !(up == 1) VAL [i=10, range=11, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=9, range=11, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=9, range=10, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=9, range=10, up=0] [L14] COND FALSE !(i == 0) VAL [i=9, range=10, up=0] [L17] COND FALSE !(i == range) VAL [i=9, range=10, up=0] [L20] COND FALSE !(up == 1) VAL [i=9, range=10, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=8, range=10, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=8, range=9, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=8, range=9, up=0] [L14] COND FALSE !(i == 0) VAL [i=8, range=9, up=0] [L17] COND FALSE !(i == range) VAL [i=8, range=9, up=0] [L20] COND FALSE !(up == 1) VAL [i=8, range=9, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=7, range=9, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=7, range=8, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=7, range=8, up=0] [L14] COND FALSE !(i == 0) VAL [i=7, range=8, up=0] [L17] COND FALSE !(i == range) VAL [i=7, range=8, up=0] [L20] COND FALSE !(up == 1) VAL [i=7, range=8, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=6, range=8, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=6, range=7, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=6, range=7, up=0] [L14] COND FALSE !(i == 0) VAL [i=6, range=7, up=0] [L17] COND FALSE !(i == range) VAL [i=6, range=7, up=0] [L20] COND FALSE !(up == 1) VAL [i=6, range=7, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=5, range=7, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=5, range=6, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=5, range=6, up=0] [L14] COND FALSE !(i == 0) VAL [i=5, range=6, up=0] [L17] COND FALSE !(i == range) VAL [i=5, range=6, up=0] [L20] COND FALSE !(up == 1) VAL [i=5, range=6, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=4, range=6, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=4, range=5, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=4, range=5, up=0] [L14] COND FALSE !(i == 0) VAL [i=4, range=5, up=0] [L17] COND FALSE !(i == range) VAL [i=4, range=5, up=0] [L20] COND FALSE !(up == 1) VAL [i=4, range=5, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=3, range=5, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=3, range=4, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=3, range=4, up=0] [L14] COND FALSE !(i == 0) VAL [i=3, range=4, up=0] [L17] COND FALSE !(i == range) VAL [i=3, range=4, up=0] [L20] COND FALSE !(up == 1) VAL [i=3, range=4, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=2, range=4, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=2, range=3, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=2, range=3, up=0] [L14] COND FALSE !(i == 0) VAL [i=2, range=3, up=0] [L17] COND FALSE !(i == range) VAL [i=2, range=3, up=0] [L20] COND FALSE !(up == 1) VAL [i=2, range=3, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=1, range=3, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=1, range=2, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=1, range=2, up=0] [L14] COND FALSE !(i == 0) VAL [i=1, range=2, up=0] [L17] COND FALSE !(i == range) VAL [i=1, range=2, up=0] [L20] COND FALSE !(up == 1) VAL [i=1, range=2, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=0, range=2, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=0, range=1, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=0, range=1, up=0] [L14] COND TRUE i == 0 [L15] up = 1 VAL [i=0, range=1, up=1] Loop: [L17] COND FALSE !(i == range) [L20] COND TRUE up == 1 [L21] i = i+1 [L23] COND FALSE !(up == 0) [L26] COND FALSE !(i == range-2) [L13] COND TRUE 0 <= i && i <= range [L14] COND FALSE !(i == 0) [L17] COND TRUE i == range [L18] up = 0 [L20] COND FALSE !(up == 1) [L23] COND TRUE up == 0 [L24] i = i-1 [L26] COND FALSE !(i == range-2) [L13] COND TRUE 0 <= i && i <= range [L14] COND TRUE i == 0 [L15] up = 1 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int range; [L8] int up; [L9] i = __VERIFIER_nondet_int() [L10] range = 20 [L11] up = 0 VAL [range=20, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=19, range=20, up=0] [L14] COND FALSE !(i == 0) VAL [i=19, range=20, up=0] [L17] COND FALSE !(i == range) VAL [i=19, range=20, up=0] [L20] COND FALSE !(up == 1) VAL [i=19, range=20, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=18, range=20, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=18, range=19, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=18, range=19, up=0] [L14] COND FALSE !(i == 0) VAL [i=18, range=19, up=0] [L17] COND FALSE !(i == range) VAL [i=18, range=19, up=0] [L20] COND FALSE !(up == 1) VAL [i=18, range=19, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=17, range=19, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=17, range=18, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=17, range=18, up=0] [L14] COND FALSE !(i == 0) VAL [i=17, range=18, up=0] [L17] COND FALSE !(i == range) VAL [i=17, range=18, up=0] [L20] COND FALSE !(up == 1) VAL [i=17, range=18, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=16, range=18, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=16, range=17, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=16, range=17, up=0] [L14] COND FALSE !(i == 0) VAL [i=16, range=17, up=0] [L17] COND FALSE !(i == range) VAL [i=16, range=17, up=0] [L20] COND FALSE !(up == 1) VAL [i=16, range=17, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=15, range=17, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=15, range=16, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=15, range=16, up=0] [L14] COND FALSE !(i == 0) VAL [i=15, range=16, up=0] [L17] COND FALSE !(i == range) VAL [i=15, range=16, up=0] [L20] COND FALSE !(up == 1) VAL [i=15, range=16, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=14, range=16, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=14, range=15, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=14, range=15, up=0] [L14] COND FALSE !(i == 0) VAL [i=14, range=15, up=0] [L17] COND FALSE !(i == range) VAL [i=14, range=15, up=0] [L20] COND FALSE !(up == 1) VAL [i=14, range=15, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=13, range=15, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=13, range=14, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=13, range=14, up=0] [L14] COND FALSE !(i == 0) VAL [i=13, range=14, up=0] [L17] COND FALSE !(i == range) VAL [i=13, range=14, up=0] [L20] COND FALSE !(up == 1) VAL [i=13, range=14, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=12, range=14, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=12, range=13, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=12, range=13, up=0] [L14] COND FALSE !(i == 0) VAL [i=12, range=13, up=0] [L17] COND FALSE !(i == range) VAL [i=12, range=13, up=0] [L20] COND FALSE !(up == 1) VAL [i=12, range=13, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=11, range=13, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=11, range=12, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=11, range=12, up=0] [L14] COND FALSE !(i == 0) VAL [i=11, range=12, up=0] [L17] COND FALSE !(i == range) VAL [i=11, range=12, up=0] [L20] COND FALSE !(up == 1) VAL [i=11, range=12, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=10, range=12, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=10, range=11, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=10, range=11, up=0] [L14] COND FALSE !(i == 0) VAL [i=10, range=11, up=0] [L17] COND FALSE !(i == range) VAL [i=10, range=11, up=0] [L20] COND FALSE !(up == 1) VAL [i=10, range=11, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=9, range=11, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=9, range=10, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=9, range=10, up=0] [L14] COND FALSE !(i == 0) VAL [i=9, range=10, up=0] [L17] COND FALSE !(i == range) VAL [i=9, range=10, up=0] [L20] COND FALSE !(up == 1) VAL [i=9, range=10, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=8, range=10, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=8, range=9, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=8, range=9, up=0] [L14] COND FALSE !(i == 0) VAL [i=8, range=9, up=0] [L17] COND FALSE !(i == range) VAL [i=8, range=9, up=0] [L20] COND FALSE !(up == 1) VAL [i=8, range=9, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=7, range=9, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=7, range=8, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=7, range=8, up=0] [L14] COND FALSE !(i == 0) VAL [i=7, range=8, up=0] [L17] COND FALSE !(i == range) VAL [i=7, range=8, up=0] [L20] COND FALSE !(up == 1) VAL [i=7, range=8, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=6, range=8, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=6, range=7, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=6, range=7, up=0] [L14] COND FALSE !(i == 0) VAL [i=6, range=7, up=0] [L17] COND FALSE !(i == range) VAL [i=6, range=7, up=0] [L20] COND FALSE !(up == 1) VAL [i=6, range=7, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=5, range=7, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=5, range=6, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=5, range=6, up=0] [L14] COND FALSE !(i == 0) VAL [i=5, range=6, up=0] [L17] COND FALSE !(i == range) VAL [i=5, range=6, up=0] [L20] COND FALSE !(up == 1) VAL [i=5, range=6, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=4, range=6, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=4, range=5, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=4, range=5, up=0] [L14] COND FALSE !(i == 0) VAL [i=4, range=5, up=0] [L17] COND FALSE !(i == range) VAL [i=4, range=5, up=0] [L20] COND FALSE !(up == 1) VAL [i=4, range=5, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=3, range=5, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=3, range=4, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=3, range=4, up=0] [L14] COND FALSE !(i == 0) VAL [i=3, range=4, up=0] [L17] COND FALSE !(i == range) VAL [i=3, range=4, up=0] [L20] COND FALSE !(up == 1) VAL [i=3, range=4, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=2, range=4, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=2, range=3, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=2, range=3, up=0] [L14] COND FALSE !(i == 0) VAL [i=2, range=3, up=0] [L17] COND FALSE !(i == range) VAL [i=2, range=3, up=0] [L20] COND FALSE !(up == 1) VAL [i=2, range=3, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=1, range=3, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=1, range=2, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=1, range=2, up=0] [L14] COND FALSE !(i == 0) VAL [i=1, range=2, up=0] [L17] COND FALSE !(i == range) VAL [i=1, range=2, up=0] [L20] COND FALSE !(up == 1) VAL [i=1, range=2, up=0] [L23] COND TRUE up == 0 [L24] i = i-1 VAL [i=0, range=2, up=0] [L26] COND TRUE i == range-2 [L27] range = range-1 VAL [i=0, range=1, up=0] [L13] COND TRUE 0 <= i && i <= range VAL [i=0, range=1, up=0] [L14] COND TRUE i == 0 [L15] up = 1 VAL [i=0, range=1, up=1] Loop: [L17] COND FALSE !(i == range) [L20] COND TRUE up == 1 [L21] i = i+1 [L23] COND FALSE !(up == 0) [L26] COND FALSE !(i == range-2) [L13] COND TRUE 0 <= i && i <= range [L14] COND FALSE !(i == 0) [L17] COND TRUE i == range [L18] up = 0 [L20] COND FALSE !(up == 1) [L23] COND TRUE up == 0 [L24] i = i-1 [L26] COND FALSE !(i == range-2) [L13] COND TRUE 0 <= i && i <= range [L14] COND TRUE i == 0 [L15] up = 1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-20 22:11:32,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-20 22:11:32,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-20 22:11:33,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-20 22:11:33,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-20 22:11:33,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 22:11:33,676 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)