./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a046e57d 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/locks/test_locks_15-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 17:09:19,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 17:09:19,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-13 17:09:19,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 17:09:19,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 17:09:19,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 17:09:19,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 17:09:19,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 17:09:19,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 17:09:19,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 17:09:19,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 17:09:19,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 17:09:19,676 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 17:09:19,677 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-13 17:09:19,678 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-13 17:09:19,678 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-13 17:09:19,678 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-13 17:09:19,681 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-13 17:09:19,681 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-13 17:09:19,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 17:09:19,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-13 17:09:19,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 17:09:19,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 17:09:19,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 17:09:19,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 17:09:19,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-13 17:09:19,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-13 17:09:19,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-13 17:09:19,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 17:09:19,685 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 17:09:19,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 17:09:19,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 17:09:19,685 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-13 17:09:19,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 17:09:19,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 17:09:19,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 17:09:19,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 17:09:19,687 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 17:09:19,687 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-13 17:09:19,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 [2024-10-13 17:09:20,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 17:09:20,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 17:09:20,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 17:09:20,039 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 17:09:20,039 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 17:09:20,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-2.c [2024-10-13 17:09:21,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 17:09:21,719 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 17:09:21,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-2.c [2024-10-13 17:09:21,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ac6a3882/efad6983301d45b2bee880540433bed3/FLAGa1dc8ac5e [2024-10-13 17:09:21,751 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ac6a3882/efad6983301d45b2bee880540433bed3 [2024-10-13 17:09:21,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 17:09:21,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 17:09:21,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 17:09:21,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 17:09:21,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 17:09:21,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:09:21" (1/1) ... [2024-10-13 17:09:21,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4dfec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:21, skipping insertion in model container [2024-10-13 17:09:21,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:09:21" (1/1) ... [2024-10-13 17:09:21,799 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 17:09:22,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 17:09:22,021 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 17:09:22,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 17:09:22,071 INFO L204 MainTranslator]: Completed translation [2024-10-13 17:09:22,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22 WrapperNode [2024-10-13 17:09:22,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 17:09:22,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 17:09:22,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 17:09:22,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 17:09:22,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,102 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 193 [2024-10-13 17:09:22,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 17:09:22,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 17:09:22,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 17:09:22,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 17:09:22,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,120 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,135 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 17:09:22,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 17:09:22,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 17:09:22,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 17:09:22,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 17:09:22,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (1/1) ... [2024-10-13 17:09:22,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-13 17:09:22,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 17:09:22,214 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) [2024-10-13 17:09:22,224 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 [2024-10-13 17:09:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 17:09:22,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 17:09:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 17:09:22,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 17:09:22,375 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 17:09:22,377 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 17:09:22,616 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-10-13 17:09:22,616 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 17:09:22,632 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 17:09:22,632 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 17:09:22,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:09:22 BoogieIcfgContainer [2024-10-13 17:09:22,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 17:09:22,633 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-13 17:09:22,633 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-13 17:09:22,636 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-13 17:09:22,637 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 17:09:22,637 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 05:09:21" (1/3) ... [2024-10-13 17:09:22,638 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72b700a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 05:09:22, skipping insertion in model container [2024-10-13 17:09:22,638 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 17:09:22,638 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:09:22" (2/3) ... [2024-10-13 17:09:22,638 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72b700a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 05:09:22, skipping insertion in model container [2024-10-13 17:09:22,638 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-13 17:09:22,638 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:09:22" (3/3) ... [2024-10-13 17:09:22,640 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_15-2.c [2024-10-13 17:09:22,689 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-13 17:09:22,689 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-13 17:09:22,689 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-13 17:09:22,689 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-13 17:09:22,690 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-13 17:09:22,690 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-13 17:09:22,690 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-13 17:09:22,690 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-13 17:09:22,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 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) [2024-10-13 17:09:22,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2024-10-13 17:09:22,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:22,712 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:22,717 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:22,718 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:22,718 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-13 17:09:22,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 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) [2024-10-13 17:09:22,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2024-10-13 17:09:22,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:22,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:22,723 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:22,723 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:22,730 INFO L745 eck$LassoCheckResult]: Stem: 24#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 33#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 19#L225-1true [2024-10-13 17:09:22,732 INFO L747 eck$LassoCheckResult]: Loop: 19#L225-1true assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 32#L58true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 28#L93true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 25#L93-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 12#L97-1true assume !(0 != main_~p3~0#1); 15#L101-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 51#L105-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 44#L109-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 11#L113-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 21#L117-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 30#L121-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 16#L125-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 35#L129-1true assume !(0 != main_~p11~0#1); 3#L133-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 5#L137-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 39#L141-1true assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 55#L145-1true assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 48#L149-1true assume !(0 != main_~p1~0#1); 46#L155-1true assume !(0 != main_~p2~0#1); 27#L160-1true assume !(0 != main_~p3~0#1); 10#L165-1true assume !(0 != main_~p4~0#1); 42#L170-1true assume !(0 != main_~p5~0#1); 45#L175-1true assume !(0 != main_~p6~0#1); 17#L180-1true assume !(0 != main_~p7~0#1); 38#L185-1true assume !(0 != main_~p8~0#1); 23#L190-1true assume !(0 != main_~p9~0#1); 41#L195-1true assume !(0 != main_~p10~0#1); 14#L200-1true assume !(0 != main_~p11~0#1); 43#L205-1true assume !(0 != main_~p12~0#1); 22#L210-1true assume !(0 != main_~p13~0#1); 4#L215-1true assume !(0 != main_~p14~0#1); 36#L220-1true assume !(0 != main_~p15~0#1); 19#L225-1true [2024-10-13 17:09:22,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-13 17:09:22,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:22,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261219270] [2024-10-13 17:09:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:22,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:22,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:22,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2064553094, now seen corresponding path program 1 times [2024-10-13 17:09:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958850987] [2024-10-13 17:09:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:22,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958850987] [2024-10-13 17:09:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958850987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:23,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:23,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719661971] [2024-10-13 17:09:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:23,065 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:23,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:23,099 INFO L87 Difference]: Start difference. First operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 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 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:23,157 INFO L93 Difference]: Finished difference Result 103 states and 189 transitions. [2024-10-13 17:09:23,158 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 189 transitions. [2024-10-13 17:09:23,164 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2024-10-13 17:09:23,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 95 states and 153 transitions. [2024-10-13 17:09:23,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2024-10-13 17:09:23,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2024-10-13 17:09:23,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 153 transitions. [2024-10-13 17:09:23,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:23,180 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 153 transitions. [2024-10-13 17:09:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 153 transitions. [2024-10-13 17:09:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-13 17:09:23,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.6105263157894736) internal successors, (153), 94 states have internal predecessors, (153), 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) [2024-10-13 17:09:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 153 transitions. [2024-10-13 17:09:23,217 INFO L240 hiAutomatonCegarLoop]: Abstraction has 95 states and 153 transitions. [2024-10-13 17:09:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:23,222 INFO L425 stractBuchiCegarLoop]: Abstraction has 95 states and 153 transitions. [2024-10-13 17:09:23,222 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-13 17:09:23,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 153 transitions. [2024-10-13 17:09:23,226 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2024-10-13 17:09:23,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:23,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:23,230 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:23,230 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:23,230 INFO L745 eck$LassoCheckResult]: Stem: 204#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 205#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 211#L225-1 [2024-10-13 17:09:23,230 INFO L747 eck$LassoCheckResult]: Loop: 211#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 222#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 221#L93 assume !(0 != main_~p1~0#1); 206#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 184#L97-1 assume !(0 != main_~p3~0#1); 185#L101-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 189#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 217#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 182#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 183#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 256#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 190#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 191#L129-1 assume !(0 != main_~p11~0#1); 212#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 254#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 253#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 252#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 251#L149-1 assume !(0 != main_~p1~0#1); 250#L155-1 assume !(0 != main_~p2~0#1); 248#L160-1 assume !(0 != main_~p3~0#1); 246#L165-1 assume !(0 != main_~p4~0#1); 243#L170-1 assume !(0 != main_~p5~0#1); 242#L175-1 assume !(0 != main_~p6~0#1); 240#L180-1 assume !(0 != main_~p7~0#1); 237#L185-1 assume !(0 != main_~p8~0#1); 236#L190-1 assume !(0 != main_~p9~0#1); 234#L195-1 assume !(0 != main_~p10~0#1); 232#L200-1 assume !(0 != main_~p11~0#1); 230#L205-1 assume !(0 != main_~p12~0#1); 228#L210-1 assume !(0 != main_~p13~0#1); 226#L215-1 assume !(0 != main_~p14~0#1); 224#L220-1 assume !(0 != main_~p15~0#1); 211#L225-1 [2024-10-13 17:09:23,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,231 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-10-13 17:09:23,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045398360] [2024-10-13 17:09:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:23,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2087185348, now seen corresponding path program 1 times [2024-10-13 17:09:23,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029620589] [2024-10-13 17:09:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:23,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:23,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029620589] [2024-10-13 17:09:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029620589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:23,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:23,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329255288] [2024-10-13 17:09:23,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:23,314 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:23,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:23,315 INFO L87 Difference]: Start difference. First operand 95 states and 153 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:23,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:23,344 INFO L93 Difference]: Finished difference Result 186 states and 298 transitions. [2024-10-13 17:09:23,344 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 298 transitions. [2024-10-13 17:09:23,346 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2024-10-13 17:09:23,351 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 186 states and 298 transitions. [2024-10-13 17:09:23,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2024-10-13 17:09:23,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2024-10-13 17:09:23,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 186 states and 298 transitions. [2024-10-13 17:09:23,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:23,355 INFO L218 hiAutomatonCegarLoop]: Abstraction has 186 states and 298 transitions. [2024-10-13 17:09:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states and 298 transitions. [2024-10-13 17:09:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2024-10-13 17:09:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.6021505376344085) internal successors, (298), 185 states have internal predecessors, (298), 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) [2024-10-13 17:09:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 298 transitions. [2024-10-13 17:09:23,376 INFO L240 hiAutomatonCegarLoop]: Abstraction has 186 states and 298 transitions. [2024-10-13 17:09:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:23,377 INFO L425 stractBuchiCegarLoop]: Abstraction has 186 states and 298 transitions. [2024-10-13 17:09:23,377 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-13 17:09:23,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 298 transitions. [2024-10-13 17:09:23,379 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2024-10-13 17:09:23,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:23,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:23,380 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:23,380 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:23,380 INFO L745 eck$LassoCheckResult]: Stem: 491#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 492#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 498#L225-1 [2024-10-13 17:09:23,380 INFO L747 eck$LassoCheckResult]: Loop: 498#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 516#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 512#L93 assume !(0 != main_~p1~0#1); 513#L93-2 assume !(0 != main_~p2~0#1); 639#L97-1 assume !(0 != main_~p3~0#1); 638#L101-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 637#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 636#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 635#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 634#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 633#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 632#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 499#L129-1 assume !(0 != main_~p11~0#1); 500#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 527#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 528#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 523#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 524#L149-1 assume !(0 != main_~p1~0#1); 608#L155-1 assume !(0 != main_~p2~0#1); 606#L160-1 assume !(0 != main_~p3~0#1); 604#L165-1 assume !(0 != main_~p4~0#1); 599#L170-1 assume !(0 != main_~p5~0#1); 590#L175-1 assume !(0 != main_~p6~0#1); 582#L180-1 assume !(0 != main_~p7~0#1); 577#L185-1 assume !(0 != main_~p8~0#1); 572#L190-1 assume !(0 != main_~p9~0#1); 570#L195-1 assume !(0 != main_~p10~0#1); 564#L200-1 assume !(0 != main_~p11~0#1); 560#L205-1 assume !(0 != main_~p12~0#1); 552#L210-1 assume !(0 != main_~p13~0#1); 548#L215-1 assume !(0 != main_~p14~0#1); 546#L220-1 assume !(0 != main_~p15~0#1); 498#L225-1 [2024-10-13 17:09:23,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-10-13 17:09:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20784819] [2024-10-13 17:09:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:23,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,407 INFO L85 PathProgramCache]: Analyzing trace with hash -821578554, now seen corresponding path program 1 times [2024-10-13 17:09:23,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970772314] [2024-10-13 17:09:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:23,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:23,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970772314] [2024-10-13 17:09:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970772314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:23,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:23,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:23,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105377302] [2024-10-13 17:09:23,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:23,465 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:23,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:23,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:23,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:23,467 INFO L87 Difference]: Start difference. First operand 186 states and 298 transitions. cyclomatic complexity: 116 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:23,489 INFO L93 Difference]: Finished difference Result 366 states and 582 transitions. [2024-10-13 17:09:23,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 366 states and 582 transitions. [2024-10-13 17:09:23,492 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2024-10-13 17:09:23,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 366 states to 366 states and 582 transitions. [2024-10-13 17:09:23,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 366 [2024-10-13 17:09:23,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 366 [2024-10-13 17:09:23,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 366 states and 582 transitions. [2024-10-13 17:09:23,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:23,497 INFO L218 hiAutomatonCegarLoop]: Abstraction has 366 states and 582 transitions. [2024-10-13 17:09:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states and 582 transitions. [2024-10-13 17:09:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2024-10-13 17:09:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 366 states have (on average 1.5901639344262295) internal successors, (582), 365 states have internal predecessors, (582), 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) [2024-10-13 17:09:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 582 transitions. [2024-10-13 17:09:23,516 INFO L240 hiAutomatonCegarLoop]: Abstraction has 366 states and 582 transitions. [2024-10-13 17:09:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:23,517 INFO L425 stractBuchiCegarLoop]: Abstraction has 366 states and 582 transitions. [2024-10-13 17:09:23,517 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-13 17:09:23,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 582 transitions. [2024-10-13 17:09:23,520 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2024-10-13 17:09:23,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:23,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:23,521 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:23,521 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:23,521 INFO L745 eck$LassoCheckResult]: Stem: 1049#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1050#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 1056#L225-1 [2024-10-13 17:09:23,521 INFO L747 eck$LassoCheckResult]: Loop: 1056#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 1133#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 1129#L93 assume !(0 != main_~p1~0#1); 1123#L93-2 assume !(0 != main_~p2~0#1); 1120#L97-1 assume !(0 != main_~p3~0#1); 1114#L101-1 assume !(0 != main_~p4~0#1); 1115#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 1259#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1257#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1255#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1253#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1251#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1249#L129-1 assume !(0 != main_~p11~0#1); 1247#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1246#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1243#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 1241#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 1239#L149-1 assume !(0 != main_~p1~0#1); 1238#L155-1 assume !(0 != main_~p2~0#1); 1237#L160-1 assume !(0 != main_~p3~0#1); 1233#L165-1 assume !(0 != main_~p4~0#1); 1234#L170-1 assume !(0 != main_~p5~0#1); 1228#L175-1 assume !(0 != main_~p6~0#1); 1220#L180-1 assume !(0 != main_~p7~0#1); 1196#L185-1 assume !(0 != main_~p8~0#1); 1171#L190-1 assume !(0 != main_~p9~0#1); 1169#L195-1 assume !(0 != main_~p10~0#1); 1167#L200-1 assume !(0 != main_~p11~0#1); 1165#L205-1 assume !(0 != main_~p12~0#1); 1163#L210-1 assume !(0 != main_~p13~0#1); 1147#L215-1 assume !(0 != main_~p14~0#1); 1143#L220-1 assume !(0 != main_~p15~0#1); 1056#L225-1 [2024-10-13 17:09:23,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-10-13 17:09:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610593803] [2024-10-13 17:09:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:23,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1101649480, now seen corresponding path program 1 times [2024-10-13 17:09:23,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517165181] [2024-10-13 17:09:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:23,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:23,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517165181] [2024-10-13 17:09:23,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517165181] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:23,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:23,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123029867] [2024-10-13 17:09:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:23,576 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:23,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:23,577 INFO L87 Difference]: Start difference. First operand 366 states and 582 transitions. cyclomatic complexity: 224 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:23,600 INFO L93 Difference]: Finished difference Result 722 states and 1138 transitions. [2024-10-13 17:09:23,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 722 states and 1138 transitions. [2024-10-13 17:09:23,607 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2024-10-13 17:09:23,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 722 states to 722 states and 1138 transitions. [2024-10-13 17:09:23,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 722 [2024-10-13 17:09:23,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 722 [2024-10-13 17:09:23,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 722 states and 1138 transitions. [2024-10-13 17:09:23,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:23,615 INFO L218 hiAutomatonCegarLoop]: Abstraction has 722 states and 1138 transitions. [2024-10-13 17:09:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states and 1138 transitions. [2024-10-13 17:09:23,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2024-10-13 17:09:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 722 states have (on average 1.5761772853185596) internal successors, (1138), 721 states have internal predecessors, (1138), 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) [2024-10-13 17:09:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1138 transitions. [2024-10-13 17:09:23,660 INFO L240 hiAutomatonCegarLoop]: Abstraction has 722 states and 1138 transitions. [2024-10-13 17:09:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:23,661 INFO L425 stractBuchiCegarLoop]: Abstraction has 722 states and 1138 transitions. [2024-10-13 17:09:23,661 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-13 17:09:23,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 722 states and 1138 transitions. [2024-10-13 17:09:23,666 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2024-10-13 17:09:23,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:23,666 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:23,667 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:23,667 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:23,667 INFO L745 eck$LassoCheckResult]: Stem: 2146#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 2113#L225-1 [2024-10-13 17:09:23,667 INFO L747 eck$LassoCheckResult]: Loop: 2113#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 2152#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 2153#L93 assume !(0 != main_~p1~0#1); 2564#L93-2 assume !(0 != main_~p2~0#1); 2558#L97-1 assume !(0 != main_~p3~0#1); 2526#L101-1 assume !(0 != main_~p4~0#1); 2528#L105-1 assume !(0 != main_~p5~0#1); 2556#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 2554#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2552#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2550#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2548#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 2546#L129-1 assume !(0 != main_~p11~0#1); 2544#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 2542#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 2540#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 2538#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 2536#L149-1 assume !(0 != main_~p1~0#1); 2490#L155-1 assume !(0 != main_~p2~0#1); 2491#L160-1 assume !(0 != main_~p3~0#1); 2623#L165-1 assume !(0 != main_~p4~0#1); 2482#L170-1 assume !(0 != main_~p5~0#1); 2479#L175-1 assume !(0 != main_~p6~0#1); 2478#L180-1 assume !(0 != main_~p7~0#1); 2158#L185-1 assume !(0 != main_~p8~0#1); 2117#L190-1 assume !(0 != main_~p9~0#1); 2628#L195-1 assume !(0 != main_~p10~0#1); 2124#L200-1 assume !(0 != main_~p11~0#1); 2125#L205-1 assume !(0 != main_~p12~0#1); 2140#L210-1 assume !(0 != main_~p13~0#1); 2108#L215-1 assume !(0 != main_~p14~0#1); 2109#L220-1 assume !(0 != main_~p15~0#1); 2113#L225-1 [2024-10-13 17:09:23,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2024-10-13 17:09:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97236627] [2024-10-13 17:09:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:23,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1163689094, now seen corresponding path program 1 times [2024-10-13 17:09:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22998423] [2024-10-13 17:09:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:23,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22998423] [2024-10-13 17:09:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22998423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:23,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896337963] [2024-10-13 17:09:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:23,755 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:23,756 INFO L87 Difference]: Start difference. First operand 722 states and 1138 transitions. cyclomatic complexity: 432 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:23,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:23,804 INFO L93 Difference]: Finished difference Result 1426 states and 2226 transitions. [2024-10-13 17:09:23,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1426 states and 2226 transitions. [2024-10-13 17:09:23,823 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2024-10-13 17:09:23,831 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1426 states to 1426 states and 2226 transitions. [2024-10-13 17:09:23,832 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1426 [2024-10-13 17:09:23,833 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1426 [2024-10-13 17:09:23,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1426 states and 2226 transitions. [2024-10-13 17:09:23,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:23,836 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2024-10-13 17:09:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states and 2226 transitions. [2024-10-13 17:09:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2024-10-13 17:09:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1426 states have (on average 1.5610098176718092) internal successors, (2226), 1425 states have internal predecessors, (2226), 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) [2024-10-13 17:09:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2226 transitions. [2024-10-13 17:09:23,869 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2024-10-13 17:09:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:23,872 INFO L425 stractBuchiCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2024-10-13 17:09:23,872 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-13 17:09:23,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1426 states and 2226 transitions. [2024-10-13 17:09:23,880 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2024-10-13 17:09:23,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:23,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:23,882 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:23,882 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:23,882 INFO L745 eck$LassoCheckResult]: Stem: 4300#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4301#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 4307#L225-1 [2024-10-13 17:09:23,883 INFO L747 eck$LassoCheckResult]: Loop: 4307#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 4522#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 4523#L93 assume !(0 != main_~p1~0#1); 4733#L93-2 assume !(0 != main_~p2~0#1); 4732#L97-1 assume !(0 != main_~p3~0#1); 4730#L101-1 assume !(0 != main_~p4~0#1); 4727#L105-1 assume !(0 != main_~p5~0#1); 4723#L109-1 assume !(0 != main_~p6~0#1); 4721#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 4719#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4717#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 4715#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 4713#L129-1 assume !(0 != main_~p11~0#1); 4711#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 4709#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 4707#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 4705#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 4702#L149-1 assume !(0 != main_~p1~0#1); 4703#L155-1 assume !(0 != main_~p2~0#1); 4752#L160-1 assume !(0 != main_~p3~0#1); 4651#L165-1 assume !(0 != main_~p4~0#1); 4652#L170-1 assume !(0 != main_~p5~0#1); 4639#L175-1 assume !(0 != main_~p6~0#1); 4641#L180-1 assume !(0 != main_~p7~0#1); 4625#L185-1 assume !(0 != main_~p8~0#1); 4626#L190-1 assume !(0 != main_~p9~0#1); 4612#L195-1 assume !(0 != main_~p10~0#1); 4611#L200-1 assume !(0 != main_~p11~0#1); 4596#L205-1 assume !(0 != main_~p12~0#1); 4588#L210-1 assume !(0 != main_~p13~0#1); 4587#L215-1 assume !(0 != main_~p14~0#1); 4543#L220-1 assume !(0 != main_~p15~0#1); 4307#L225-1 [2024-10-13 17:09:23,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2024-10-13 17:09:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135213915] [2024-10-13 17:09:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:23,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:23,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1304237704, now seen corresponding path program 1 times [2024-10-13 17:09:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212241338] [2024-10-13 17:09:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:23,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:23,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:23,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212241338] [2024-10-13 17:09:23,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212241338] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:23,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:23,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:23,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157739496] [2024-10-13 17:09:23,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:23,924 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:23,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:23,925 INFO L87 Difference]: Start difference. First operand 1426 states and 2226 transitions. cyclomatic complexity: 832 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:23,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:23,952 INFO L93 Difference]: Finished difference Result 2818 states and 4354 transitions. [2024-10-13 17:09:23,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2818 states and 4354 transitions. [2024-10-13 17:09:23,978 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2024-10-13 17:09:23,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2818 states to 2818 states and 4354 transitions. [2024-10-13 17:09:23,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2818 [2024-10-13 17:09:23,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2818 [2024-10-13 17:09:23,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2818 states and 4354 transitions. [2024-10-13 17:09:24,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:24,003 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2024-10-13 17:09:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states and 4354 transitions. [2024-10-13 17:09:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2818. [2024-10-13 17:09:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2818 states have (on average 1.5450674237047552) internal successors, (4354), 2817 states have internal predecessors, (4354), 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) [2024-10-13 17:09:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4354 transitions. [2024-10-13 17:09:24,056 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2024-10-13 17:09:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:24,058 INFO L425 stractBuchiCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2024-10-13 17:09:24,059 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-13 17:09:24,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2818 states and 4354 transitions. [2024-10-13 17:09:24,074 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2024-10-13 17:09:24,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:24,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:24,076 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:24,078 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:24,078 INFO L745 eck$LassoCheckResult]: Stem: 8551#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8552#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 8558#L225-1 [2024-10-13 17:09:24,078 INFO L747 eck$LassoCheckResult]: Loop: 8558#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 8715#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 8713#L93 assume !(0 != main_~p1~0#1); 8712#L93-2 assume !(0 != main_~p2~0#1); 8706#L97-1 assume !(0 != main_~p3~0#1); 8707#L101-1 assume !(0 != main_~p4~0#1); 8813#L105-1 assume !(0 != main_~p5~0#1); 8810#L109-1 assume !(0 != main_~p6~0#1); 8806#L113-1 assume !(0 != main_~p7~0#1); 8804#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 8803#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8800#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 8797#L129-1 assume !(0 != main_~p11~0#1); 8794#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 8790#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 8786#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 8781#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 8775#L149-1 assume !(0 != main_~p1~0#1); 8769#L155-1 assume !(0 != main_~p2~0#1); 8764#L160-1 assume !(0 != main_~p3~0#1); 8757#L165-1 assume !(0 != main_~p4~0#1); 8751#L170-1 assume !(0 != main_~p5~0#1); 8746#L175-1 assume !(0 != main_~p6~0#1); 8744#L180-1 assume !(0 != main_~p7~0#1); 8738#L185-1 assume !(0 != main_~p8~0#1); 8735#L190-1 assume !(0 != main_~p9~0#1); 8731#L195-1 assume !(0 != main_~p10~0#1); 8725#L200-1 assume !(0 != main_~p11~0#1); 8723#L205-1 assume !(0 != main_~p12~0#1); 8721#L210-1 assume !(0 != main_~p13~0#1); 8719#L215-1 assume !(0 != main_~p14~0#1); 8717#L220-1 assume !(0 != main_~p15~0#1); 8558#L225-1 [2024-10-13 17:09:24,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2024-10-13 17:09:24,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:24,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738826884] [2024-10-13 17:09:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:24,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:24,086 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:24,093 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:24,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1170224198, now seen corresponding path program 1 times [2024-10-13 17:09:24,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:24,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822347624] [2024-10-13 17:09:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:24,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822347624] [2024-10-13 17:09:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822347624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:24,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:24,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:24,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369889002] [2024-10-13 17:09:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:24,139 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:24,140 INFO L87 Difference]: Start difference. First operand 2818 states and 4354 transitions. cyclomatic complexity: 1600 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:24,211 INFO L93 Difference]: Finished difference Result 5570 states and 8514 transitions. [2024-10-13 17:09:24,211 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5570 states and 8514 transitions. [2024-10-13 17:09:24,254 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2024-10-13 17:09:24,281 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5570 states to 5570 states and 8514 transitions. [2024-10-13 17:09:24,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5570 [2024-10-13 17:09:24,292 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5570 [2024-10-13 17:09:24,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5570 states and 8514 transitions. [2024-10-13 17:09:24,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:24,301 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2024-10-13 17:09:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states and 8514 transitions. [2024-10-13 17:09:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5570. [2024-10-13 17:09:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5570 states have (on average 1.5285457809694794) internal successors, (8514), 5569 states have internal predecessors, (8514), 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) [2024-10-13 17:09:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 8514 transitions. [2024-10-13 17:09:24,400 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2024-10-13 17:09:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:24,402 INFO L425 stractBuchiCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2024-10-13 17:09:24,403 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-10-13 17:09:24,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5570 states and 8514 transitions. [2024-10-13 17:09:24,428 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2024-10-13 17:09:24,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:24,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:24,430 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:24,430 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:24,431 INFO L745 eck$LassoCheckResult]: Stem: 16942#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 16943#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 16950#L225-1 [2024-10-13 17:09:24,431 INFO L747 eck$LassoCheckResult]: Loop: 16950#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 17204#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 17198#L93 assume !(0 != main_~p1~0#1); 17194#L93-2 assume !(0 != main_~p2~0#1); 17191#L97-1 assume !(0 != main_~p3~0#1); 17185#L101-1 assume !(0 != main_~p4~0#1); 17179#L105-1 assume !(0 != main_~p5~0#1); 17175#L109-1 assume !(0 != main_~p6~0#1); 17170#L113-1 assume !(0 != main_~p7~0#1); 17164#L117-1 assume !(0 != main_~p8~0#1); 17165#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 17152#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 17153#L129-1 assume !(0 != main_~p11~0#1); 17144#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 17145#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 17136#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 17137#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 17126#L149-1 assume !(0 != main_~p1~0#1); 17127#L155-1 assume !(0 != main_~p2~0#1); 17116#L160-1 assume !(0 != main_~p3~0#1); 17115#L165-1 assume !(0 != main_~p4~0#1); 17102#L170-1 assume !(0 != main_~p5~0#1); 17103#L175-1 assume !(0 != main_~p6~0#1); 17093#L180-1 assume !(0 != main_~p7~0#1); 17094#L185-1 assume !(0 != main_~p8~0#1); 17246#L190-1 assume !(0 != main_~p9~0#1); 17242#L195-1 assume !(0 != main_~p10~0#1); 17238#L200-1 assume !(0 != main_~p11~0#1); 17232#L205-1 assume !(0 != main_~p12~0#1); 17226#L210-1 assume !(0 != main_~p13~0#1); 17220#L215-1 assume !(0 != main_~p14~0#1); 17214#L220-1 assume !(0 != main_~p15~0#1); 16950#L225-1 [2024-10-13 17:09:24,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2024-10-13 17:09:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:24,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36665000] [2024-10-13 17:09:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:24,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:24,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:24,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:24,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash -635214136, now seen corresponding path program 1 times [2024-10-13 17:09:24,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:24,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370453778] [2024-10-13 17:09:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:24,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:24,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370453778] [2024-10-13 17:09:24,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370453778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:24,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:24,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:24,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983071062] [2024-10-13 17:09:24,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:24,485 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:24,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:24,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:24,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:24,486 INFO L87 Difference]: Start difference. First operand 5570 states and 8514 transitions. cyclomatic complexity: 3072 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:24,539 INFO L93 Difference]: Finished difference Result 11010 states and 16642 transitions. [2024-10-13 17:09:24,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11010 states and 16642 transitions. [2024-10-13 17:09:24,661 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2024-10-13 17:09:24,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11010 states to 11010 states and 16642 transitions. [2024-10-13 17:09:24,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11010 [2024-10-13 17:09:24,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11010 [2024-10-13 17:09:24,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11010 states and 16642 transitions. [2024-10-13 17:09:24,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:24,744 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2024-10-13 17:09:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states and 16642 transitions. [2024-10-13 17:09:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11010. [2024-10-13 17:09:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 11010 states have (on average 1.5115349682107175) internal successors, (16642), 11009 states have internal predecessors, (16642), 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) [2024-10-13 17:09:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 16642 transitions. [2024-10-13 17:09:25,010 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2024-10-13 17:09:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:25,013 INFO L425 stractBuchiCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2024-10-13 17:09:25,013 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-10-13 17:09:25,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11010 states and 16642 transitions. [2024-10-13 17:09:25,054 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2024-10-13 17:09:25,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:25,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:25,055 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:25,055 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:25,055 INFO L745 eck$LassoCheckResult]: Stem: 33526#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 33527#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 33531#L225-1 [2024-10-13 17:09:25,055 INFO L747 eck$LassoCheckResult]: Loop: 33531#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 33939#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 33933#L93 assume !(0 != main_~p1~0#1); 33809#L93-2 assume !(0 != main_~p2~0#1); 33799#L97-1 assume !(0 != main_~p3~0#1); 33791#L101-1 assume !(0 != main_~p4~0#1); 33780#L105-1 assume !(0 != main_~p5~0#1); 33770#L109-1 assume !(0 != main_~p6~0#1); 33763#L113-1 assume !(0 != main_~p7~0#1); 33759#L117-1 assume !(0 != main_~p8~0#1); 33754#L121-1 assume !(0 != main_~p9~0#1); 33750#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 33747#L129-1 assume !(0 != main_~p11~0#1); 33744#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 33741#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 33737#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 33738#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 33970#L149-1 assume !(0 != main_~p1~0#1); 33966#L155-1 assume !(0 != main_~p2~0#1); 33963#L160-1 assume !(0 != main_~p3~0#1); 33958#L165-1 assume !(0 != main_~p4~0#1); 33944#L170-1 assume !(0 != main_~p5~0#1); 33934#L175-1 assume !(0 != main_~p6~0#1); 33936#L180-1 assume !(0 != main_~p7~0#1); 34036#L185-1 assume !(0 != main_~p8~0#1); 34034#L190-1 assume !(0 != main_~p9~0#1); 34033#L195-1 assume !(0 != main_~p10~0#1); 34031#L200-1 assume !(0 != main_~p11~0#1); 34029#L205-1 assume !(0 != main_~p12~0#1); 34027#L210-1 assume !(0 != main_~p13~0#1); 33978#L215-1 assume !(0 != main_~p14~0#1); 33955#L220-1 assume !(0 != main_~p15~0#1); 33531#L225-1 [2024-10-13 17:09:25,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:25,056 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2024-10-13 17:09:25,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:25,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828280678] [2024-10-13 17:09:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:25,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:25,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:25,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:25,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:25,065 INFO L85 PathProgramCache]: Analyzing trace with hash -416359418, now seen corresponding path program 1 times [2024-10-13 17:09:25,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:25,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163883853] [2024-10-13 17:09:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:25,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:25,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:25,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163883853] [2024-10-13 17:09:25,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163883853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:25,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:25,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:25,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220744487] [2024-10-13 17:09:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:25,087 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:25,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:25,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:25,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:25,088 INFO L87 Difference]: Start difference. First operand 11010 states and 16642 transitions. cyclomatic complexity: 5888 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:25,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:25,156 INFO L93 Difference]: Finished difference Result 21762 states and 32514 transitions. [2024-10-13 17:09:25,156 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21762 states and 32514 transitions. [2024-10-13 17:09:25,330 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2024-10-13 17:09:25,415 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21762 states to 21762 states and 32514 transitions. [2024-10-13 17:09:25,416 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21762 [2024-10-13 17:09:25,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21762 [2024-10-13 17:09:25,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21762 states and 32514 transitions. [2024-10-13 17:09:25,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:25,456 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2024-10-13 17:09:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21762 states and 32514 transitions. [2024-10-13 17:09:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21762 to 21762. [2024-10-13 17:09:25,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21762 states, 21762 states have (on average 1.4940722360077199) internal successors, (32514), 21761 states have internal predecessors, (32514), 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) [2024-10-13 17:09:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21762 states to 21762 states and 32514 transitions. [2024-10-13 17:09:25,860 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2024-10-13 17:09:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:25,863 INFO L425 stractBuchiCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2024-10-13 17:09:25,863 INFO L332 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2024-10-13 17:09:25,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21762 states and 32514 transitions. [2024-10-13 17:09:26,055 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2024-10-13 17:09:26,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:26,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:26,057 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:26,057 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:26,057 INFO L745 eck$LassoCheckResult]: Stem: 66304#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 66305#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 66311#L225-1 [2024-10-13 17:09:26,057 INFO L747 eck$LassoCheckResult]: Loop: 66311#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 66961#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 66959#L93 assume !(0 != main_~p1~0#1); 66957#L93-2 assume !(0 != main_~p2~0#1); 66956#L97-1 assume !(0 != main_~p3~0#1); 66954#L101-1 assume !(0 != main_~p4~0#1); 66952#L105-1 assume !(0 != main_~p5~0#1); 66951#L109-1 assume !(0 != main_~p6~0#1); 66949#L113-1 assume !(0 != main_~p7~0#1); 66947#L117-1 assume !(0 != main_~p8~0#1); 66945#L121-1 assume !(0 != main_~p9~0#1); 66943#L125-1 assume !(0 != main_~p10~0#1); 66941#L129-1 assume !(0 != main_~p11~0#1); 66940#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 66938#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 66935#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 66905#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 66900#L149-1 assume !(0 != main_~p1~0#1); 66897#L155-1 assume !(0 != main_~p2~0#1); 66896#L160-1 assume !(0 != main_~p3~0#1); 66891#L165-1 assume !(0 != main_~p4~0#1); 66705#L170-1 assume !(0 != main_~p5~0#1); 66706#L175-1 assume !(0 != main_~p6~0#1); 66697#L180-1 assume !(0 != main_~p7~0#1); 66698#L185-1 assume !(0 != main_~p8~0#1); 66833#L190-1 assume !(0 != main_~p9~0#1); 66835#L195-1 assume !(0 != main_~p10~0#1); 66877#L200-1 assume !(0 != main_~p11~0#1); 66872#L205-1 assume !(0 != main_~p12~0#1); 66871#L210-1 assume !(0 != main_~p13~0#1); 66965#L215-1 assume !(0 != main_~p14~0#1); 66963#L220-1 assume !(0 != main_~p15~0#1); 66311#L225-1 [2024-10-13 17:09:26,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2024-10-13 17:09:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897759421] [2024-10-13 17:09:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:26,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:26,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:26,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:26,073 INFO L85 PathProgramCache]: Analyzing trace with hash 6342408, now seen corresponding path program 1 times [2024-10-13 17:09:26,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:26,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115908778] [2024-10-13 17:09:26,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:26,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:26,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:26,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115908778] [2024-10-13 17:09:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115908778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:26,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:26,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:26,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932813921] [2024-10-13 17:09:26,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:26,109 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:26,110 INFO L87 Difference]: Start difference. First operand 21762 states and 32514 transitions. cyclomatic complexity: 11264 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:26,315 INFO L93 Difference]: Finished difference Result 43010 states and 63490 transitions. [2024-10-13 17:09:26,315 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43010 states and 63490 transitions. [2024-10-13 17:09:26,591 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2024-10-13 17:09:26,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43010 states to 43010 states and 63490 transitions. [2024-10-13 17:09:26,907 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43010 [2024-10-13 17:09:26,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43010 [2024-10-13 17:09:26,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43010 states and 63490 transitions. [2024-10-13 17:09:27,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:27,006 INFO L218 hiAutomatonCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2024-10-13 17:09:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43010 states and 63490 transitions. [2024-10-13 17:09:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43010 to 43010. [2024-10-13 17:09:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43010 states, 43010 states have (on average 1.4761683329458266) internal successors, (63490), 43009 states have internal predecessors, (63490), 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) [2024-10-13 17:09:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43010 states to 43010 states and 63490 transitions. [2024-10-13 17:09:27,798 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2024-10-13 17:09:27,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:27,799 INFO L425 stractBuchiCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2024-10-13 17:09:27,799 INFO L332 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2024-10-13 17:09:27,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43010 states and 63490 transitions. [2024-10-13 17:09:27,900 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2024-10-13 17:09:27,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:27,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:27,901 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:27,901 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:27,901 INFO L745 eck$LassoCheckResult]: Stem: 131083#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 131084#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 131090#L225-1 [2024-10-13 17:09:27,901 INFO L747 eck$LassoCheckResult]: Loop: 131090#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 131931#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 131932#L93 assume !(0 != main_~p1~0#1); 131905#L93-2 assume !(0 != main_~p2~0#1); 131907#L97-1 assume !(0 != main_~p3~0#1); 131892#L101-1 assume !(0 != main_~p4~0#1); 131894#L105-1 assume !(0 != main_~p5~0#1); 132109#L109-1 assume !(0 != main_~p6~0#1); 132105#L113-1 assume !(0 != main_~p7~0#1); 132101#L117-1 assume !(0 != main_~p8~0#1); 132098#L121-1 assume !(0 != main_~p9~0#1); 132095#L125-1 assume !(0 != main_~p10~0#1); 132092#L129-1 assume !(0 != main_~p11~0#1); 132053#L133-1 assume !(0 != main_~p12~0#1); 132054#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 132056#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 132051#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 132022#L149-1 assume !(0 != main_~p1~0#1); 132023#L155-1 assume !(0 != main_~p2~0#1); 132108#L160-1 assume !(0 != main_~p3~0#1); 132103#L165-1 assume !(0 != main_~p4~0#1); 132100#L170-1 assume !(0 != main_~p5~0#1); 132097#L175-1 assume !(0 != main_~p6~0#1); 132093#L180-1 assume !(0 != main_~p7~0#1); 132091#L185-1 assume !(0 != main_~p8~0#1); 132088#L190-1 assume !(0 != main_~p9~0#1); 132086#L195-1 assume !(0 != main_~p10~0#1); 132083#L200-1 assume !(0 != main_~p11~0#1); 132081#L205-1 assume !(0 != main_~p12~0#1); 132080#L210-1 assume !(0 != main_~p13~0#1); 132078#L215-1 assume !(0 != main_~p14~0#1); 131939#L220-1 assume !(0 != main_~p15~0#1); 131090#L225-1 [2024-10-13 17:09:27,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2024-10-13 17:09:27,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:27,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847835038] [2024-10-13 17:09:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:27,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:27,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:27,910 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:28,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:28,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1682601334, now seen corresponding path program 1 times [2024-10-13 17:09:28,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:28,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264158691] [2024-10-13 17:09:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:28,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:28,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264158691] [2024-10-13 17:09:28,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264158691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:28,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:28,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:28,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820095674] [2024-10-13 17:09:28,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:28,079 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:28,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:28,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:28,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:28,080 INFO L87 Difference]: Start difference. First operand 43010 states and 63490 transitions. cyclomatic complexity: 21504 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:28,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:28,280 INFO L93 Difference]: Finished difference Result 84994 states and 123906 transitions. [2024-10-13 17:09:28,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84994 states and 123906 transitions. [2024-10-13 17:09:28,771 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2024-10-13 17:09:29,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84994 states to 84994 states and 123906 transitions. [2024-10-13 17:09:29,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84994 [2024-10-13 17:09:29,165 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84994 [2024-10-13 17:09:29,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84994 states and 123906 transitions. [2024-10-13 17:09:29,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:29,241 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2024-10-13 17:09:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84994 states and 123906 transitions. [2024-10-13 17:09:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84994 to 84994. [2024-10-13 17:09:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84994 states, 84994 states have (on average 1.4578205520389675) internal successors, (123906), 84993 states have internal predecessors, (123906), 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) [2024-10-13 17:09:30,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84994 states to 84994 states and 123906 transitions. [2024-10-13 17:09:30,544 INFO L240 hiAutomatonCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2024-10-13 17:09:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:30,545 INFO L425 stractBuchiCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2024-10-13 17:09:30,545 INFO L332 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2024-10-13 17:09:30,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84994 states and 123906 transitions. [2024-10-13 17:09:30,791 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2024-10-13 17:09:30,791 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:30,791 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:30,792 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:30,792 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:30,792 INFO L745 eck$LassoCheckResult]: Stem: 259091#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 259092#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 259099#L225-1 [2024-10-13 17:09:30,793 INFO L747 eck$LassoCheckResult]: Loop: 259099#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 259378#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 259376#L93 assume !(0 != main_~p1~0#1); 259374#L93-2 assume !(0 != main_~p2~0#1); 259373#L97-1 assume !(0 != main_~p3~0#1); 259371#L101-1 assume !(0 != main_~p4~0#1); 259369#L105-1 assume !(0 != main_~p5~0#1); 259367#L109-1 assume !(0 != main_~p6~0#1); 259365#L113-1 assume !(0 != main_~p7~0#1); 259363#L117-1 assume !(0 != main_~p8~0#1); 259361#L121-1 assume !(0 != main_~p9~0#1); 259238#L125-1 assume !(0 != main_~p10~0#1); 259184#L129-1 assume !(0 != main_~p11~0#1); 259185#L133-1 assume !(0 != main_~p12~0#1); 259359#L137-1 assume !(0 != main_~p13~0#1); 259356#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 259354#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 259351#L149-1 assume !(0 != main_~p1~0#1); 259347#L155-1 assume !(0 != main_~p2~0#1); 259344#L160-1 assume !(0 != main_~p3~0#1); 259339#L165-1 assume !(0 != main_~p4~0#1); 259335#L170-1 assume !(0 != main_~p5~0#1); 259330#L175-1 assume !(0 != main_~p6~0#1); 259324#L180-1 assume !(0 != main_~p7~0#1); 259319#L185-1 assume !(0 != main_~p8~0#1); 259313#L190-1 assume !(0 != main_~p9~0#1); 259307#L195-1 assume !(0 != main_~p10~0#1); 259235#L200-1 assume !(0 != main_~p11~0#1); 259234#L205-1 assume !(0 != main_~p12~0#1); 259297#L210-1 assume !(0 != main_~p13~0#1); 259382#L215-1 assume !(0 != main_~p14~0#1); 259380#L220-1 assume !(0 != main_~p15~0#1); 259099#L225-1 [2024-10-13 17:09:30,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:30,793 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2024-10-13 17:09:30,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:30,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720673762] [2024-10-13 17:09:30,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:30,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:30,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:30,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:30,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash 618221256, now seen corresponding path program 1 times [2024-10-13 17:09:30,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:30,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724000919] [2024-10-13 17:09:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:30,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:30,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724000919] [2024-10-13 17:09:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724000919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:30,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:30,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 17:09:30,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735299241] [2024-10-13 17:09:30,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:30,834 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:30,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:30,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:30,834 INFO L87 Difference]: Start difference. First operand 84994 states and 123906 transitions. cyclomatic complexity: 40960 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:31,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:31,479 INFO L93 Difference]: Finished difference Result 167938 states and 241666 transitions. [2024-10-13 17:09:31,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167938 states and 241666 transitions. [2024-10-13 17:09:32,293 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 167936 [2024-10-13 17:09:32,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167938 states to 167938 states and 241666 transitions. [2024-10-13 17:09:32,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167938 [2024-10-13 17:09:32,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 167938 [2024-10-13 17:09:32,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 167938 states and 241666 transitions. [2024-10-13 17:09:33,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:33,019 INFO L218 hiAutomatonCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2024-10-13 17:09:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167938 states and 241666 transitions. [2024-10-13 17:09:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167938 to 167938. [2024-10-13 17:09:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167938 states, 167938 states have (on average 1.4390191618335337) internal successors, (241666), 167937 states have internal predecessors, (241666), 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) [2024-10-13 17:09:35,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167938 states to 167938 states and 241666 transitions. [2024-10-13 17:09:35,142 INFO L240 hiAutomatonCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2024-10-13 17:09:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:35,143 INFO L425 stractBuchiCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2024-10-13 17:09:35,143 INFO L332 stractBuchiCegarLoop]: ======== Iteration 13 ============ [2024-10-13 17:09:35,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167938 states and 241666 transitions. [2024-10-13 17:09:36,237 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 167936 [2024-10-13 17:09:36,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:36,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:36,240 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:36,240 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:36,240 INFO L745 eck$LassoCheckResult]: Stem: 512033#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 512034#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 512043#L225-1 [2024-10-13 17:09:36,240 INFO L747 eck$LassoCheckResult]: Loop: 512043#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 513169#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 513166#L93 assume !(0 != main_~p1~0#1); 513160#L93-2 assume !(0 != main_~p2~0#1); 513155#L97-1 assume !(0 != main_~p3~0#1); 513152#L101-1 assume !(0 != main_~p4~0#1); 513149#L105-1 assume !(0 != main_~p5~0#1); 513141#L109-1 assume !(0 != main_~p6~0#1); 513143#L113-1 assume !(0 != main_~p7~0#1); 513131#L117-1 assume !(0 != main_~p8~0#1); 513133#L121-1 assume !(0 != main_~p9~0#1); 513121#L125-1 assume !(0 != main_~p10~0#1); 513123#L129-1 assume !(0 != main_~p11~0#1); 513114#L133-1 assume !(0 != main_~p12~0#1); 513115#L137-1 assume !(0 != main_~p13~0#1); 513091#L141-1 assume !(0 != main_~p14~0#1); 513089#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 513090#L149-1 assume !(0 != main_~p1~0#1); 513250#L155-1 assume !(0 != main_~p2~0#1); 513245#L160-1 assume !(0 != main_~p3~0#1); 513238#L165-1 assume !(0 != main_~p4~0#1); 513232#L170-1 assume !(0 != main_~p5~0#1); 513224#L175-1 assume !(0 != main_~p6~0#1); 513216#L180-1 assume !(0 != main_~p7~0#1); 513208#L185-1 assume !(0 != main_~p8~0#1); 513204#L190-1 assume !(0 != main_~p9~0#1); 513199#L195-1 assume !(0 != main_~p10~0#1); 513194#L200-1 assume !(0 != main_~p11~0#1); 513191#L205-1 assume !(0 != main_~p12~0#1); 513189#L210-1 assume !(0 != main_~p13~0#1); 513186#L215-1 assume !(0 != main_~p14~0#1); 513182#L220-1 assume !(0 != main_~p15~0#1); 512043#L225-1 [2024-10-13 17:09:36,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 13 times [2024-10-13 17:09:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:36,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807497586] [2024-10-13 17:09:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:36,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:36,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:36,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash -970126646, now seen corresponding path program 1 times [2024-10-13 17:09:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:36,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880508968] [2024-10-13 17:09:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:36,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 17:09:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 17:09:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 17:09:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880508968] [2024-10-13 17:09:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880508968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 17:09:36,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 17:09:36,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 17:09:36,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490548130] [2024-10-13 17:09:36,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 17:09:36,278 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-13 17:09:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 17:09:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 17:09:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 17:09:36,279 INFO L87 Difference]: Start difference. First operand 167938 states and 241666 transitions. cyclomatic complexity: 77824 Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 17:09:37,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 17:09:37,569 INFO L93 Difference]: Finished difference Result 331778 states and 471042 transitions. [2024-10-13 17:09:37,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 331778 states and 471042 transitions. [2024-10-13 17:09:39,244 INFO L131 ngComponentsAnalysis]: Automaton has 8192 accepting balls. 331776 [2024-10-13 17:09:40,025 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 331778 states to 331778 states and 471042 transitions. [2024-10-13 17:09:40,025 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 331778 [2024-10-13 17:09:40,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 331778 [2024-10-13 17:09:40,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 331778 states and 471042 transitions. [2024-10-13 17:09:40,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-13 17:09:40,787 INFO L218 hiAutomatonCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2024-10-13 17:09:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331778 states and 471042 transitions. [2024-10-13 17:09:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331778 to 331778. [2024-10-13 17:09:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331778 states, 331778 states have (on average 1.419750556094738) internal successors, (471042), 331777 states have internal predecessors, (471042), 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) [2024-10-13 17:09:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331778 states to 331778 states and 471042 transitions. [2024-10-13 17:09:45,135 INFO L240 hiAutomatonCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2024-10-13 17:09:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 17:09:45,137 INFO L425 stractBuchiCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2024-10-13 17:09:45,137 INFO L332 stractBuchiCegarLoop]: ======== Iteration 14 ============ [2024-10-13 17:09:45,137 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 331778 states and 471042 transitions. [2024-10-13 17:09:46,200 INFO L131 ngComponentsAnalysis]: Automaton has 8192 accepting balls. 331776 [2024-10-13 17:09:46,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-13 17:09:46,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-13 17:09:46,203 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-13 17:09:46,203 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 17:09:46,203 INFO L745 eck$LassoCheckResult]: Stem: 1011755#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1011756#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 1011761#L225-1 [2024-10-13 17:09:46,204 INFO L747 eck$LassoCheckResult]: Loop: 1011761#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 1012022#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 1012017#L93 assume !(0 != main_~p1~0#1); 1012010#L93-2 assume !(0 != main_~p2~0#1); 1012003#L97-1 assume !(0 != main_~p3~0#1); 1011997#L101-1 assume !(0 != main_~p4~0#1); 1011990#L105-1 assume !(0 != main_~p5~0#1); 1011982#L109-1 assume !(0 != main_~p6~0#1); 1011974#L113-1 assume !(0 != main_~p7~0#1); 1011964#L117-1 assume !(0 != main_~p8~0#1); 1011965#L121-1 assume !(0 != main_~p9~0#1); 1012113#L125-1 assume !(0 != main_~p10~0#1); 1012111#L129-1 assume !(0 != main_~p11~0#1); 1012107#L133-1 assume !(0 != main_~p12~0#1); 1012103#L137-1 assume !(0 != main_~p13~0#1); 1012099#L141-1 assume !(0 != main_~p14~0#1); 1012095#L145-1 assume !(0 != main_~p15~0#1); 1012091#L149-1 assume !(0 != main_~p1~0#1); 1012087#L155-1 assume !(0 != main_~p2~0#1); 1012084#L160-1 assume !(0 != main_~p3~0#1); 1012079#L165-1 assume !(0 != main_~p4~0#1); 1012075#L170-1 assume !(0 != main_~p5~0#1); 1012071#L175-1 assume !(0 != main_~p6~0#1); 1012067#L180-1 assume !(0 != main_~p7~0#1); 1012065#L185-1 assume !(0 != main_~p8~0#1); 1012062#L190-1 assume !(0 != main_~p9~0#1); 1012058#L195-1 assume !(0 != main_~p10~0#1); 1012055#L200-1 assume !(0 != main_~p11~0#1); 1012051#L205-1 assume !(0 != main_~p12~0#1); 1012046#L210-1 assume !(0 != main_~p13~0#1); 1012040#L215-1 assume !(0 != main_~p14~0#1); 1012033#L220-1 assume !(0 != main_~p15~0#1); 1011761#L225-1 [2024-10-13 17:09:46,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:46,204 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 14 times [2024-10-13 17:09:46,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:46,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154280203] [2024-10-13 17:09:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:46,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:46,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:46,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:46,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1991195000, now seen corresponding path program 1 times [2024-10-13 17:09:46,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:46,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070448272] [2024-10-13 17:09:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:46,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:46,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:46,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:46,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 17:09:46,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1845576266, now seen corresponding path program 1 times [2024-10-13 17:09:46,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 17:09:46,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159193475] [2024-10-13 17:09:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 17:09:46,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 17:09:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:46,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:46,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 17:09:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:47,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 17:09:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 17:09:47,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 05:09:47 BoogieIcfgContainer [2024-10-13 17:09:47,776 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-13 17:09:47,777 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 17:09:47,777 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 17:09:47,777 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 17:09:47,778 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:09:22" (3/4) ... [2024-10-13 17:09:47,779 INFO L136 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-13 17:09:47,833 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 17:09:47,833 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 17:09:47,834 INFO L158 Benchmark]: Toolchain (without parser) took 26077.59ms. Allocated memory was 165.7MB in the beginning and 13.7GB in the end (delta: 13.6GB). Free memory was 89.3MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2024-10-13 17:09:47,834 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 17:09:47,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.87ms. Allocated memory is still 165.7MB. Free memory was 89.1MB in the beginning and 75.8MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-13 17:09:47,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.84ms. Allocated memory is still 165.7MB. Free memory was 75.8MB in the beginning and 73.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 17:09:47,835 INFO L158 Benchmark]: Boogie Preprocessor took 61.50ms. Allocated memory is still 165.7MB. Free memory was 73.9MB in the beginning and 136.6MB in the end (delta: -62.7MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-10-13 17:09:47,835 INFO L158 Benchmark]: RCFGBuilder took 467.06ms. Allocated memory is still 165.7MB. Free memory was 136.5MB in the beginning and 125.3MB in the end (delta: 11.3MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2024-10-13 17:09:47,835 INFO L158 Benchmark]: BuchiAutomizer took 25143.15ms. Allocated memory was 165.7MB in the beginning and 13.7GB in the end (delta: 13.6GB). Free memory was 124.3MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2024-10-13 17:09:47,835 INFO L158 Benchmark]: Witness Printer took 56.30ms. Allocated memory is still 13.7GB. Free memory was 11.0GB in the beginning and 11.0GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 17:09:47,837 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.87ms. Allocated memory is still 165.7MB. Free memory was 89.1MB in the beginning and 75.8MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.84ms. Allocated memory is still 165.7MB. Free memory was 75.8MB in the beginning and 73.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.50ms. Allocated memory is still 165.7MB. Free memory was 73.9MB in the beginning and 136.6MB in the end (delta: -62.7MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * RCFGBuilder took 467.06ms. Allocated memory is still 165.7MB. Free memory was 136.5MB in the beginning and 125.3MB in the end (delta: 11.3MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 25143.15ms. Allocated memory was 165.7MB in the beginning and 13.7GB in the end (delta: 13.6GB). Free memory was 124.3MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Witness Printer took 56.30ms. Allocated memory is still 13.7GB. Free memory was 11.0GB in the beginning and 11.0GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 (13 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.13 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 331778 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 25.0s and 14 iterations. TraceHistogramMax:1. Analysis of lassos took 2.6s. Construction of modules took 0.2s. Büchi inclusion checks took 19.2s. Highest rank in rank-based complementation 0. Minimization of det autom 13. Minimization of nondet autom 0. Automata minimization 9.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 5.8s Buchi closure took 0.3s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 797 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 797 mSDsluCounter, 2495 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 966 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 1529 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI13 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; Loop: [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND FALSE !(p14 != 0) [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L165] COND FALSE !(p3 != 0) [L170] COND FALSE !(p4 != 0) [L175] COND FALSE !(p5 != 0) [L180] COND FALSE !(p6 != 0) [L185] COND FALSE !(p7 != 0) [L190] COND FALSE !(p8 != 0) [L195] COND FALSE !(p9 != 0) [L200] COND FALSE !(p10 != 0) [L205] COND FALSE !(p11 != 0) [L210] COND FALSE !(p12 != 0) [L215] COND FALSE !(p13 != 0) [L220] COND FALSE !(p14 != 0) [L225] COND FALSE !(p15 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 56]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; Loop: [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND FALSE !(p14 != 0) [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L165] COND FALSE !(p3 != 0) [L170] COND FALSE !(p4 != 0) [L175] COND FALSE !(p5 != 0) [L180] COND FALSE !(p6 != 0) [L185] COND FALSE !(p7 != 0) [L190] COND FALSE !(p8 != 0) [L195] COND FALSE !(p9 != 0) [L200] COND FALSE !(p10 != 0) [L205] COND FALSE !(p11 != 0) [L210] COND FALSE !(p12 != 0) [L215] COND FALSE !(p13 != 0) [L220] COND FALSE !(p14 != 0) [L225] COND FALSE !(p15 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-13 17:09:47,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)