./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af4a0e4f738e916feae01fb2c2f056f4ba7834b8a7b8d69765614c5417c16c63 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 01:49:18,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 01:49:18,239 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 01:49:18,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 01:49:18,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 01:49:18,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 01:49:18,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 01:49:18,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 01:49:18,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 01:49:18,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 01:49:18,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 01:49:18,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 01:49:18,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 01:49:18,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 01:49:18,293 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 01:49:18,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 01:49:18,293 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 01:49:18,293 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 01:49:18,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 01:49:18,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 01:49:18,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 01:49:18,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 01:49:18,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 01:49:18,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 01:49:18,295 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 01:49:18,295 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 01:49:18,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 01:49:18,295 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 01:49:18,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 01:49:18,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 01:49:18,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 01:49:18,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 01:49:18,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:49:18,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 01:49:18,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 01:49:18,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 01:49:18,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 01:49:18,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 01:49:18,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 01:49:18,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 01:49:18,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 01:49:18,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 01:49:18,298 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af4a0e4f738e916feae01fb2c2f056f4ba7834b8a7b8d69765614c5417c16c63 [2024-10-14 01:49:18,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 01:49:18,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 01:49:18,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 01:49:18,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 01:49:18,505 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 01:49:18,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i [2024-10-14 01:49:19,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 01:49:20,053 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 01:49:20,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i [2024-10-14 01:49:20,068 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda188cb0/99058b73afb54130ab6da5a60795b1b1/FLAGad0f6118f [2024-10-14 01:49:20,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fda188cb0/99058b73afb54130ab6da5a60795b1b1 [2024-10-14 01:49:20,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 01:49:20,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 01:49:20,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 01:49:20,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 01:49:20,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 01:49:20,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d932118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20, skipping insertion in model container [2024-10-14 01:49:20,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,487 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 01:49:20,730 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22387,22400] [2024-10-14 01:49:20,735 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22458,22471] [2024-10-14 01:49:20,735 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22532,22545] [2024-10-14 01:49:20,736 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22624,22637] [2024-10-14 01:49:20,737 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22701,22714] [2024-10-14 01:49:20,738 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22796,22809] [2024-10-14 01:49:20,738 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22873,22886] [2024-10-14 01:49:20,739 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22956,22969] [2024-10-14 01:49:20,739 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23051,23064] [2024-10-14 01:49:20,740 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23128,23141] [2024-10-14 01:49:20,744 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23211,23224] [2024-10-14 01:49:20,746 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23300,23313] [2024-10-14 01:49:20,747 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23386,23399] [2024-10-14 01:49:20,749 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23532,23545] [2024-10-14 01:49:20,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:49:20,766 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 01:49:20,808 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22387,22400] [2024-10-14 01:49:20,809 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22458,22471] [2024-10-14 01:49:20,813 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22532,22545] [2024-10-14 01:49:20,813 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22624,22637] [2024-10-14 01:49:20,814 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22701,22714] [2024-10-14 01:49:20,819 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22796,22809] [2024-10-14 01:49:20,819 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22873,22886] [2024-10-14 01:49:20,820 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[22956,22969] [2024-10-14 01:49:20,820 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23051,23064] [2024-10-14 01:49:20,821 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23128,23141] [2024-10-14 01:49:20,821 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23211,23224] [2024-10-14 01:49:20,824 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23300,23313] [2024-10-14 01:49:20,825 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23386,23399] [2024-10-14 01:49:20,828 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-queue-2.i[23532,23545] [2024-10-14 01:49:20,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:49:20,857 INFO L204 MainTranslator]: Completed translation [2024-10-14 01:49:20,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20 WrapperNode [2024-10-14 01:49:20,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 01:49:20,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 01:49:20,860 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 01:49:20,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 01:49:20,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,906 INFO L138 Inliner]: procedures = 119, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 220 [2024-10-14 01:49:20,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 01:49:20,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 01:49:20,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 01:49:20,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 01:49:20,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,924 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,938 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-10-14 01:49:20,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,971 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 01:49:20,972 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 01:49:20,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 01:49:20,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 01:49:20,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (1/1) ... [2024-10-14 01:49:20,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:49:20,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:49:21,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 01:49:21,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 01:49:21,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 01:49:21,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 01:49:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 01:49:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 01:49:21,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 01:49:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 01:49:21,263 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 01:49:21,265 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 01:49:21,499 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-10-14 01:49:21,499 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 01:49:21,518 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 01:49:21,519 INFO L314 CfgBuilder]: Removed 31 assume(true) statements. [2024-10-14 01:49:21,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:49:21 BoogieIcfgContainer [2024-10-14 01:49:21,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 01:49:21,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 01:49:21,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 01:49:21,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 01:49:21,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:49:20" (1/3) ... [2024-10-14 01:49:21,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be3560e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:49:21, skipping insertion in model container [2024-10-14 01:49:21,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:49:20" (2/3) ... [2024-10-14 01:49:21,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be3560e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:49:21, skipping insertion in model container [2024-10-14 01:49:21,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:49:21" (3/3) ... [2024-10-14 01:49:21,525 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-queue-2.i [2024-10-14 01:49:21,550 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 01:49:21,550 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-14 01:49:21,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 01:49:21,613 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@42074e4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 01:49:21,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-14 01:49:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 67 states have (on average 2.044776119402985) internal successors, (137), 81 states have internal predecessors, (137), 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) [2024-10-14 01:49:21,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 01:49:21,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:21,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 01:49:21,623 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:21,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:21,628 INFO L85 PathProgramCache]: Analyzing trace with hash 11235370, now seen corresponding path program 1 times [2024-10-14 01:49:21,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:21,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799910238] [2024-10-14 01:49:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:21,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:21,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:21,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799910238] [2024-10-14 01:49:21,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799910238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:49:21,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:49:21,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:49:21,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475507667] [2024-10-14 01:49:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:49:21,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 01:49:21,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 01:49:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:49:21,791 INFO L87 Difference]: Start difference. First operand has 82 states, 67 states have (on average 2.044776119402985) internal successors, (137), 81 states have internal predecessors, (137), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:21,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:21,812 INFO L93 Difference]: Finished difference Result 163 states and 273 transitions. [2024-10-14 01:49:21,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 01:49:21,813 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-14 01:49:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:21,820 INFO L225 Difference]: With dead ends: 163 [2024-10-14 01:49:21,820 INFO L226 Difference]: Without dead ends: 79 [2024-10-14 01:49:21,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:49:21,824 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:21,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 01:49:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-10-14 01:49:21,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-10-14 01:49:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 65 states have (on average 1.353846153846154) internal successors, (88), 78 states have internal predecessors, (88), 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) [2024-10-14 01:49:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2024-10-14 01:49:21,850 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 4 [2024-10-14 01:49:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:21,850 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2024-10-14 01:49:21,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2024-10-14 01:49:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 01:49:21,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:21,851 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 01:49:21,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 01:49:21,851 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:21,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:21,852 INFO L85 PathProgramCache]: Analyzing trace with hash 346540763, now seen corresponding path program 1 times [2024-10-14 01:49:21,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:21,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026976765] [2024-10-14 01:49:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:21,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026976765] [2024-10-14 01:49:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026976765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:49:21,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:49:21,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:49:21,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783637217] [2024-10-14 01:49:21,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:49:21,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:49:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:49:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:21,899 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:21,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:21,928 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2024-10-14 01:49:21,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:49:21,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-14 01:49:21,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:21,929 INFO L225 Difference]: With dead ends: 79 [2024-10-14 01:49:21,929 INFO L226 Difference]: Without dead ends: 69 [2024-10-14 01:49:21,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:21,931 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 75 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:21,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 64 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 01:49:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-14 01:49:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-14 01:49:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.3) internal successors, (78), 68 states have internal predecessors, (78), 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) [2024-10-14 01:49:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2024-10-14 01:49:21,937 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 5 [2024-10-14 01:49:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:21,937 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2024-10-14 01:49:21,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2024-10-14 01:49:21,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 01:49:21,938 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:21,938 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:49:21,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 01:49:21,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:21,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1300016296, now seen corresponding path program 1 times [2024-10-14 01:49:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:21,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558652941] [2024-10-14 01:49:21,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:21,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558652941] [2024-10-14 01:49:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558652941] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:49:22,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:49:22,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:49:22,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595468010] [2024-10-14 01:49:22,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:49:22,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:49:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:49:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:22,004 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:22,028 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2024-10-14 01:49:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:49:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-14 01:49:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:22,029 INFO L225 Difference]: With dead ends: 69 [2024-10-14 01:49:22,030 INFO L226 Difference]: Without dead ends: 67 [2024-10-14 01:49:22,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:22,031 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 58 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:22,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 79 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 01:49:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-14 01:49:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-14 01:49:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 66 states have internal predecessors, (76), 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) [2024-10-14 01:49:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2024-10-14 01:49:22,038 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 8 [2024-10-14 01:49:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:22,038 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2024-10-14 01:49:22,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2024-10-14 01:49:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-14 01:49:22,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:22,039 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:49:22,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 01:49:22,039 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:22,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:22,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1331859152, now seen corresponding path program 1 times [2024-10-14 01:49:22,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:22,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918276930] [2024-10-14 01:49:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:22,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:22,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918276930] [2024-10-14 01:49:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918276930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:49:22,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:49:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:49:22,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580825837] [2024-10-14 01:49:22,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:49:22,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:49:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:49:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:22,093 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:22,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:22,129 INFO L93 Difference]: Finished difference Result 152 states and 177 transitions. [2024-10-14 01:49:22,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:49:22,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-14 01:49:22,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:22,131 INFO L225 Difference]: With dead ends: 152 [2024-10-14 01:49:22,131 INFO L226 Difference]: Without dead ends: 86 [2024-10-14 01:49:22,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:22,132 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 17 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:22,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 132 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 01:49:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-14 01:49:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2024-10-14 01:49:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 74 states have internal predecessors, (85), 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) [2024-10-14 01:49:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2024-10-14 01:49:22,140 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 11 [2024-10-14 01:49:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:22,141 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2024-10-14 01:49:22,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2024-10-14 01:49:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 01:49:22,141 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:22,142 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:49:22,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 01:49:22,142 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:22,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -591627506, now seen corresponding path program 1 times [2024-10-14 01:49:22,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:22,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962538758] [2024-10-14 01:49:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:22,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:22,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:22,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962538758] [2024-10-14 01:49:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962538758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:49:22,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:49:22,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 01:49:22,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58532142] [2024-10-14 01:49:22,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:49:22,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 01:49:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:22,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 01:49:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 01:49:22,371 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:22,488 INFO L93 Difference]: Finished difference Result 90 states and 103 transitions. [2024-10-14 01:49:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 01:49:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-14 01:49:22,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:22,490 INFO L225 Difference]: With dead ends: 90 [2024-10-14 01:49:22,490 INFO L226 Difference]: Without dead ends: 70 [2024-10-14 01:49:22,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:49:22,491 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 6 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:22,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 260 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:49:22,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-14 01:49:22,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-10-14 01:49:22,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 69 states have internal predecessors, (78), 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) [2024-10-14 01:49:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2024-10-14 01:49:22,503 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 16 [2024-10-14 01:49:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:22,505 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2024-10-14 01:49:22,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:22,506 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2024-10-14 01:49:22,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-14 01:49:22,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:22,506 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:49:22,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 01:49:22,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:22,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1690121268, now seen corresponding path program 1 times [2024-10-14 01:49:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:22,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445609084] [2024-10-14 01:49:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:22,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:22,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445609084] [2024-10-14 01:49:22,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445609084] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:49:22,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944298603] [2024-10-14 01:49:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:22,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:49:22,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:49:22,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:49:22,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 01:49:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:22,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 01:49:22,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:49:22,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 01:49:22,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-10-14 01:49:22,870 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-14 01:49:22,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-10-14 01:49:22,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-10-14 01:49:22,891 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 01:49:22,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-14 01:49:22,919 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-14 01:49:22,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-10-14 01:49:22,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-10-14 01:49:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:23,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:49:23,035 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_148 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_148) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2024-10-14 01:49:23,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:23,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2024-10-14 01:49:23,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:23,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 41 [2024-10-14 01:49:23,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-10-14 01:49:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:23,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944298603] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:49:23,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:49:23,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-10-14 01:49:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467439493] [2024-10-14 01:49:23,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:49:23,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 01:49:23,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 01:49:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=52, Unknown=1, NotChecked=14, Total=90 [2024-10-14 01:49:23,268 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 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) [2024-10-14 01:49:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:23,405 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2024-10-14 01:49:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 01:49:23,405 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 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) Word has length 18 [2024-10-14 01:49:23,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:23,406 INFO L225 Difference]: With dead ends: 143 [2024-10-14 01:49:23,406 INFO L226 Difference]: Without dead ends: 141 [2024-10-14 01:49:23,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=63, Unknown=1, NotChecked=16, Total=110 [2024-10-14 01:49:23,407 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 136 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:23,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 439 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2024-10-14 01:49:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-10-14 01:49:23,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 83. [2024-10-14 01:49:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.24) internal successors, (93), 82 states have internal predecessors, (93), 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) [2024-10-14 01:49:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2024-10-14 01:49:23,414 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 18 [2024-10-14 01:49:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:23,414 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2024-10-14 01:49:23,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 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) [2024-10-14 01:49:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2024-10-14 01:49:23,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 01:49:23,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:23,415 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:49:23,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 01:49:23,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 01:49:23,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:23,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:23,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1171861483, now seen corresponding path program 1 times [2024-10-14 01:49:23,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:23,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567877324] [2024-10-14 01:49:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:23,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:23,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567877324] [2024-10-14 01:49:23,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567877324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:49:23,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:49:23,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:49:23,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433855234] [2024-10-14 01:49:23,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:49:23,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:49:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:23,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:49:23,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:23,653 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:23,676 INFO L93 Difference]: Finished difference Result 173 states and 198 transitions. [2024-10-14 01:49:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:49:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-14 01:49:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:23,677 INFO L225 Difference]: With dead ends: 173 [2024-10-14 01:49:23,677 INFO L226 Difference]: Without dead ends: 107 [2024-10-14 01:49:23,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:23,678 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 24 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:23,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 124 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 01:49:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-14 01:49:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2024-10-14 01:49:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 95 states have internal predecessors, (106), 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) [2024-10-14 01:49:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2024-10-14 01:49:23,687 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 19 [2024-10-14 01:49:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:23,688 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2024-10-14 01:49:23,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:49:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2024-10-14 01:49:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 01:49:23,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:23,689 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:49:23,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 01:49:23,689 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:23,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash -172877468, now seen corresponding path program 1 times [2024-10-14 01:49:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:23,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585719395] [2024-10-14 01:49:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:23,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:49:23,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:23,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585719395] [2024-10-14 01:49:23,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585719395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:49:23,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:49:23,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:49:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721263106] [2024-10-14 01:49:23,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:49:23,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:49:23,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:49:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:23,731 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-10-14 01:49:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:23,763 INFO L93 Difference]: Finished difference Result 200 states and 227 transitions. [2024-10-14 01:49:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:49:23,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) Word has length 26 [2024-10-14 01:49:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:23,764 INFO L225 Difference]: With dead ends: 200 [2024-10-14 01:49:23,764 INFO L226 Difference]: Without dead ends: 121 [2024-10-14 01:49:23,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:23,765 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 30 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:23,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 139 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 01:49:23,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-14 01:49:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2024-10-14 01:49:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 101 states have (on average 1.188118811881188) internal successors, (120), 108 states have internal predecessors, (120), 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) [2024-10-14 01:49:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2024-10-14 01:49:23,773 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 26 [2024-10-14 01:49:23,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:23,773 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2024-10-14 01:49:23,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-10-14 01:49:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2024-10-14 01:49:23,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 01:49:23,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:23,774 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:49:23,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 01:49:23,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:23,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:23,775 INFO L85 PathProgramCache]: Analyzing trace with hash -746524485, now seen corresponding path program 1 times [2024-10-14 01:49:23,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:23,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710458412] [2024-10-14 01:49:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:23,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:24,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710458412] [2024-10-14 01:49:24,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710458412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:49:24,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515415558] [2024-10-14 01:49:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:24,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:49:24,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:49:24,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:49:24,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 01:49:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:24,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 01:49:24,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:49:24,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 01:49:24,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-10-14 01:49:24,246 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-14 01:49:24,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-10-14 01:49:24,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-10-14 01:49:24,267 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-14 01:49:24,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-10-14 01:49:24,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 01:49:24,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 01:49:24,398 INFO L349 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2024-10-14 01:49:24,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 36 [2024-10-14 01:49:24,410 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 01:49:24,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-10-14 01:49:24,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 01:49:24,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 30 [2024-10-14 01:49:24,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2024-10-14 01:49:24,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2024-10-14 01:49:24,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-10-14 01:49:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:24,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:49:24,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:24,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-14 01:49:24,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:24,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 82 [2024-10-14 01:49:24,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2024-10-14 01:49:24,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2024-10-14 01:49:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:24,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515415558] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:49:24,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:49:24,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2024-10-14 01:49:24,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039463684] [2024-10-14 01:49:24,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:49:24,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 01:49:24,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:24,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 01:49:24,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=153, Unknown=6, NotChecked=0, Total=210 [2024-10-14 01:49:24,798 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 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) [2024-10-14 01:49:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:25,148 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2024-10-14 01:49:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 01:49:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 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) Word has length 27 [2024-10-14 01:49:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:25,149 INFO L225 Difference]: With dead ends: 157 [2024-10-14 01:49:25,149 INFO L226 Difference]: Without dead ends: 155 [2024-10-14 01:49:25,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=302, Unknown=6, NotChecked=0, Total=420 [2024-10-14 01:49:25,150 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 318 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:25,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 386 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:49:25,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-14 01:49:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 107. [2024-10-14 01:49:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 100 states have (on average 1.18) internal successors, (118), 106 states have internal predecessors, (118), 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) [2024-10-14 01:49:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-10-14 01:49:25,160 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 27 [2024-10-14 01:49:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:25,160 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-10-14 01:49:25,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 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) [2024-10-14 01:49:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-10-14 01:49:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 01:49:25,161 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:25,161 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-10-14 01:49:25,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 01:49:25,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-14 01:49:25,365 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:25,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1798535576, now seen corresponding path program 1 times [2024-10-14 01:49:25,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:25,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703709128] [2024-10-14 01:49:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:25,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:49:25,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703709128] [2024-10-14 01:49:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703709128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:49:25,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:49:25,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:49:25,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036743766] [2024-10-14 01:49:25,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:49:25,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:49:25,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:25,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:49:25,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:25,422 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-10-14 01:49:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:25,436 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2024-10-14 01:49:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:49:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) Word has length 28 [2024-10-14 01:49:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:25,437 INFO L225 Difference]: With dead ends: 110 [2024-10-14 01:49:25,437 INFO L226 Difference]: Without dead ends: 108 [2024-10-14 01:49:25,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:49:25,438 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:25,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 01:49:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-14 01:49:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-14 01:49:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 107 states have internal predecessors, (119), 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) [2024-10-14 01:49:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2024-10-14 01:49:25,446 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 28 [2024-10-14 01:49:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:25,446 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2024-10-14 01:49:25,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-10-14 01:49:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2024-10-14 01:49:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 01:49:25,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:25,447 INFO L215 NwaCegarLoop]: trace histogram [2, 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] [2024-10-14 01:49:25,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 01:49:25,447 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:25,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1798533654, now seen corresponding path program 1 times [2024-10-14 01:49:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305048743] [2024-10-14 01:49:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:25,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:25,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:25,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305048743] [2024-10-14 01:49:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305048743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:49:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960811723] [2024-10-14 01:49:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:25,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:49:25,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:49:25,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:49:25,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 01:49:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:25,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-14 01:49:25,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:49:25,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 01:49:25,906 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 01:49:25,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-14 01:49:25,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-10-14 01:49:25,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 01:49:25,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-10-14 01:49:25,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 01:49:25,956 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-14 01:49:25,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 53 [2024-10-14 01:49:25,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 01:49:25,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-10-14 01:49:26,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-10-14 01:49:26,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-14 01:49:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:26,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:49:26,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2024-10-14 01:49:26,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:26,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-10-14 01:49:26,198 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:26,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-10-14 01:49:26,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:26,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2024-10-14 01:49:26,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2024-10-14 01:49:26,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:26,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 51 [2024-10-14 01:49:26,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2024-10-14 01:49:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:26,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960811723] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:49:26,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:49:26,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 16 [2024-10-14 01:49:26,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814236253] [2024-10-14 01:49:26,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:49:26,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 01:49:26,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:49:26,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 01:49:26,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=224, Unknown=4, NotChecked=0, Total=272 [2024-10-14 01:49:26,280 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 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) [2024-10-14 01:49:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:49:26,526 INFO L93 Difference]: Finished difference Result 187 states and 204 transitions. [2024-10-14 01:49:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 01:49:26,527 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 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) Word has length 28 [2024-10-14 01:49:26,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:49:26,527 INFO L225 Difference]: With dead ends: 187 [2024-10-14 01:49:26,528 INFO L226 Difference]: Without dead ends: 185 [2024-10-14 01:49:26,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=362, Unknown=4, NotChecked=0, Total=462 [2024-10-14 01:49:26,528 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 174 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:49:26,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 540 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 01:49:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-10-14 01:49:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 117. [2024-10-14 01:49:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 110 states have (on average 1.1727272727272726) internal successors, (129), 116 states have internal predecessors, (129), 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) [2024-10-14 01:49:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2024-10-14 01:49:26,538 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 28 [2024-10-14 01:49:26,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:49:26,538 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2024-10-14 01:49:26,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 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) [2024-10-14 01:49:26,538 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2024-10-14 01:49:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-14 01:49:26,538 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:49:26,538 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:49:26,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 01:49:26,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:49:26,739 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2024-10-14 01:49:26,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:49:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash -366206391, now seen corresponding path program 1 times [2024-10-14 01:49:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:49:26,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320466884] [2024-10-14 01:49:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:26,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:49:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:27,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:49:27,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320466884] [2024-10-14 01:49:27,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320466884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:49:27,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837244267] [2024-10-14 01:49:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:49:27,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:49:27,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:49:27,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:49:27,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 01:49:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:49:27,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-14 01:49:27,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:49:27,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 01:49:27,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-10-14 01:49:27,173 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-14 01:49:27,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-10-14 01:49:27,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-10-14 01:49:27,191 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-14 01:49:27,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-10-14 01:49:27,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-10-14 01:49:27,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 01:49:27,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 01:49:27,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 01:49:27,352 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-10-14 01:49:27,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 52 [2024-10-14 01:49:27,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 01:49:27,376 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-10-14 01:49:27,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 57 [2024-10-14 01:49:27,386 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 01:49:27,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-10-14 01:49:27,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-10-14 01:49:27,422 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-14 01:49:27,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-10-14 01:49:27,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-10-14 01:49:27,444 INFO L349 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2024-10-14 01:49:27,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 31 [2024-10-14 01:49:27,532 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2024-10-14 01:49:27,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 68 [2024-10-14 01:49:27,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 11 [2024-10-14 01:49:27,729 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-14 01:49:27,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 23 [2024-10-14 01:49:27,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-14 01:49:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:49:27,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:49:27,762 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_568 (Array Int Int)) (v_ArrVal_567 (Array Int Int))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_567))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_568) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 0))) is different from false [2024-10-14 01:49:27,855 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:27,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-10-14 01:49:27,866 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_568 (Array Int Int)) (v_ArrVal_567 (Array Int Int)) (v_arrayElimArr_13 (Array Int Int)) (v_ArrVal_565 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_13 |c_ULTIMATE.start_main_~item~0#1.offset|))) (or (= .cse0 0) (not (= (select |c_#valid| .cse0) 0)) (not (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~item~0#1.base| v_arrayElimArr_13) .cse0 v_ArrVal_567))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_565) .cse0 v_ArrVal_568) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 0))))) is different from false [2024-10-14 01:49:27,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:27,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 65 [2024-10-14 01:49:27,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:27,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 49 [2024-10-14 01:49:27,935 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:27,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 3444 treesize of output 2309 [2024-10-14 01:49:28,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:28,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2103 treesize of output 2030 [2024-10-14 01:49:28,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1307 treesize of output 1287 [2024-10-14 01:49:28,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1287 treesize of output 1247 [2024-10-14 01:49:28,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:28,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1285 treesize of output 1205 [2024-10-14 01:49:28,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 01:49:28,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 915 treesize of output 891