./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC --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 1e50ade1cd4893d156f015c776c9c25d8be0e1b5382a47e133f2c151a05855cf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:10:48,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:10:48,884 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:10:48,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:10:48,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:10:48,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:10:48,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:10:48,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:10:48,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:10:48,945 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:10:48,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:10:48,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:10:48,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:10:48,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:10:48,948 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:10:48,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:10:48,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:10:48,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:10:48,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:10:48,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:10:48,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:10:48,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:10:48,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:10:48,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:10:48,951 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:10:48,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:10:48,951 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:10:48,951 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:10:48,951 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:10:48,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:10:48,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:10:48,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:10:48,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:10:48,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:10:48,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:10:48,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:10:48,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:10:48,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:10:48,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:10:48,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:10:48,954 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:10:48,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:10:48,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:10:48,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:10:48,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:10:48,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:10:48,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:10:48,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:10:48,956 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC 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 -> 1e50ade1cd4893d156f015c776c9c25d8be0e1b5382a47e133f2c151a05855cf [2024-11-23 23:10:49,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:10:49,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:10:49,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:10:49,402 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:10:49,402 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:10:49,404 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i [2024-11-23 23:10:53,246 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/data/4773b9fcc/54763ddbc7d9448e8ac1c1a3346ea987/FLAGe3379f713 [2024-11-23 23:10:53,653 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:10:53,653 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i [2024-11-23 23:10:53,671 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/data/4773b9fcc/54763ddbc7d9448e8ac1c1a3346ea987/FLAGe3379f713 [2024-11-23 23:10:53,688 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/data/4773b9fcc/54763ddbc7d9448e8ac1c1a3346ea987 [2024-11-23 23:10:53,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:10:53,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:10:53,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:10:53,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:10:53,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:10:53,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:10:53" (1/1) ... [2024-11-23 23:10:53,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ad7792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:53, skipping insertion in model container [2024-11-23 23:10:53,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:10:53" (1/1) ... [2024-11-23 23:10:53,750 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:10:53,997 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i[916,929] [2024-11-23 23:10:54,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:10:54,287 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:10:54,302 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-67.i[916,929] [2024-11-23 23:10:54,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:10:54,541 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:10:54,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54 WrapperNode [2024-11-23 23:10:54,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:10:54,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:10:54,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:10:54,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:10:54,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,709 INFO L138 Inliner]: procedures = 26, calls = 118, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 969 [2024-11-23 23:10:54,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:10:54,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:10:54,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:10:54,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:10:54,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,738 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,832 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:10:54,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,889 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:10:54,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:10:54,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:10:54,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:10:54,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (1/1) ... [2024-11-23 23:10:54,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:10:54,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:10:54,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:10:55,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:10:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:10:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:10:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:10:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:10:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:10:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:10:55,302 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:10:55,305 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:10:57,830 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-23 23:10:57,830 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:10:57,897 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:10:57,901 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:10:57,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:10:57 BoogieIcfgContainer [2024-11-23 23:10:57,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:10:57,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:10:57,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:10:57,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:10:57,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:10:53" (1/3) ... [2024-11-23 23:10:57,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a07520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:10:57, skipping insertion in model container [2024-11-23 23:10:57,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:10:54" (2/3) ... [2024-11-23 23:10:57,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a07520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:10:57, skipping insertion in model container [2024-11-23 23:10:57,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:10:57" (3/3) ... [2024-11-23 23:10:57,921 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-67.i [2024-11-23 23:10:57,946 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:10:57,949 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-67.i that has 2 procedures, 398 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:10:58,073 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:10:58,091 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;@64601162, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:10:58,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:10:58,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 398 states, 290 states have (on average 1.610344827586207) internal successors, (467), 291 states have internal predecessors, (467), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-23 23:10:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2024-11-23 23:10:58,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:10:58,157 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:10:58,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:10:58,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:10:58,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1609540604, now seen corresponding path program 1 times [2024-11-23 23:10:58,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:10:58,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825659868] [2024-11-23 23:10:58,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:10:58,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:10:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:10:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 21632 trivial. 0 not checked. [2024-11-23 23:10:59,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:10:59,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825659868] [2024-11-23 23:10:59,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825659868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:10:59,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487571293] [2024-11-23 23:10:59,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:10:59,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:10:59,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:10:59,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:10:59,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:11:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:00,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:11:00,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:11:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 21632 trivial. 0 not checked. [2024-11-23 23:11:00,371 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:11:00,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487571293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:00,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:11:00,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:11:00,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003670803] [2024-11-23 23:11:00,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:00,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:11:00,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:00,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:11:00,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:11:00,406 INFO L87 Difference]: Start difference. First operand has 398 states, 290 states have (on average 1.610344827586207) internal successors, (467), 291 states have internal predecessors, (467), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (105), 2 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 2 states have call successors, (105) [2024-11-23 23:11:00,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:00,528 INFO L93 Difference]: Finished difference Result 789 states and 1453 transitions. [2024-11-23 23:11:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:11:00,531 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (105), 2 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 2 states have call successors, (105) Word has length 678 [2024-11-23 23:11:00,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:00,543 INFO L225 Difference]: With dead ends: 789 [2024-11-23 23:11:00,544 INFO L226 Difference]: Without dead ends: 394 [2024-11-23 23:11:00,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:11:00,555 INFO L435 NwaCegarLoop]: 668 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:00,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:11:00,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-23 23:11:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2024-11-23 23:11:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 287 states have (on average 1.5958188153310104) internal successors, (458), 287 states have internal predecessors, (458), 105 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-23 23:11:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 668 transitions. [2024-11-23 23:11:00,712 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 668 transitions. Word has length 678 [2024-11-23 23:11:00,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:00,713 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 668 transitions. [2024-11-23 23:11:00,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 2 states have call successors, (105), 2 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 2 states have call successors, (105) [2024-11-23 23:11:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 668 transitions. [2024-11-23 23:11:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2024-11-23 23:11:00,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:00,744 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:00,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:11:00,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cafb446a-0719-4d88-88aa-cfee1aeddd55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:11:00,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:00,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -135956313, now seen corresponding path program 1 times [2024-11-23 23:11:00,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:00,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508355750] [2024-11-23 23:11:00,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:00,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:02,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:02,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508355750] [2024-11-23 23:11:02,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508355750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:02,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:02,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:11:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221686133] [2024-11-23 23:11:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:02,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:11:02,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:02,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:11:02,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:02,378 INFO L87 Difference]: Start difference. First operand 394 states and 668 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:02,627 INFO L93 Difference]: Finished difference Result 1036 states and 1765 transitions. [2024-11-23 23:11:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:11:02,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 679 [2024-11-23 23:11:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:02,646 INFO L225 Difference]: With dead ends: 1036 [2024-11-23 23:11:02,646 INFO L226 Difference]: Without dead ends: 645 [2024-11-23 23:11:02,648 INFO L434 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 [2024-11-23 23:11:02,652 INFO L435 NwaCegarLoop]: 742 mSDtfsCounter, 424 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:02,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1386 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:11:02,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-11-23 23:11:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 642. [2024-11-23 23:11:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 504 states have (on average 1.630952380952381) internal successors, (822), 505 states have internal predecessors, (822), 135 states have call successors, (135), 2 states have call predecessors, (135), 2 states have return successors, (135), 134 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-23 23:11:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1092 transitions. [2024-11-23 23:11:02,799 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1092 transitions. Word has length 679 [2024-11-23 23:11:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:02,801 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 1092 transitions. [2024-11-23 23:11:02,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:02,802 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1092 transitions. [2024-11-23 23:11:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2024-11-23 23:11:02,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:02,829 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:02,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:11:02,829 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:02,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash -142212175, now seen corresponding path program 1 times [2024-11-23 23:11:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:02,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391968927] [2024-11-23 23:11:02,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:03,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391968927] [2024-11-23 23:11:03,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391968927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:03,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:03,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:11:03,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149988374] [2024-11-23 23:11:03,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:03,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:11:03,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:03,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:11:03,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:03,727 INFO L87 Difference]: Start difference. First operand 642 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:03,980 INFO L93 Difference]: Finished difference Result 1912 states and 3256 transitions. [2024-11-23 23:11:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:11:03,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 680 [2024-11-23 23:11:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:04,006 INFO L225 Difference]: With dead ends: 1912 [2024-11-23 23:11:04,007 INFO L226 Difference]: Without dead ends: 1273 [2024-11-23 23:11:04,013 INFO L434 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 [2024-11-23 23:11:04,014 INFO L435 NwaCegarLoop]: 662 mSDtfsCounter, 629 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:04,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1311 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:11:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2024-11-23 23:11:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1269. [2024-11-23 23:11:04,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 994 states have (on average 1.619718309859155) internal successors, (1610), 996 states have internal predecessors, (1610), 270 states have call successors, (270), 4 states have call predecessors, (270), 4 states have return successors, (270), 268 states have call predecessors, (270), 270 states have call successors, (270) [2024-11-23 23:11:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2150 transitions. [2024-11-23 23:11:04,325 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2150 transitions. Word has length 680 [2024-11-23 23:11:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:04,332 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 2150 transitions. [2024-11-23 23:11:04,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2150 transitions. [2024-11-23 23:11:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2024-11-23 23:11:04,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:04,350 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:04,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:11:04,351 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:04,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:04,353 INFO L85 PathProgramCache]: Analyzing trace with hash 642522215, now seen corresponding path program 1 times [2024-11-23 23:11:04,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:04,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625722003] [2024-11-23 23:11:04,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:04,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:04,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:04,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625722003] [2024-11-23 23:11:04,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625722003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:04,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:04,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:11:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77145587] [2024-11-23 23:11:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:04,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:11:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:04,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:11:04,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:04,984 INFO L87 Difference]: Start difference. First operand 1269 states and 2150 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:05,252 INFO L93 Difference]: Finished difference Result 3339 states and 5641 transitions. [2024-11-23 23:11:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:11:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 681 [2024-11-23 23:11:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:05,271 INFO L225 Difference]: With dead ends: 3339 [2024-11-23 23:11:05,272 INFO L226 Difference]: Without dead ends: 2073 [2024-11-23 23:11:05,277 INFO L434 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 [2024-11-23 23:11:05,278 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 402 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:05,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1579 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:11:05,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2024-11-23 23:11:05,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2069. [2024-11-23 23:11:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2069 states, 1604 states have (on average 1.5978802992518704) internal successors, (2563), 1610 states have internal predecessors, (2563), 456 states have call successors, (456), 8 states have call predecessors, (456), 8 states have return successors, (456), 450 states have call predecessors, (456), 456 states have call successors, (456) [2024-11-23 23:11:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 3475 transitions. [2024-11-23 23:11:05,595 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 3475 transitions. Word has length 681 [2024-11-23 23:11:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:05,597 INFO L471 AbstractCegarLoop]: Abstraction has 2069 states and 3475 transitions. [2024-11-23 23:11:05,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 3475 transitions. [2024-11-23 23:11:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2024-11-23 23:11:05,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:05,610 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:05,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:11:05,611 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:05,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash -928085337, now seen corresponding path program 1 times [2024-11-23 23:11:05,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863108085] [2024-11-23 23:11:05,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:05,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:06,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:06,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863108085] [2024-11-23 23:11:06,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863108085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:06,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:06,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:11:06,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639543031] [2024-11-23 23:11:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:06,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:11:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:06,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:11:06,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:06,295 INFO L87 Difference]: Start difference. First operand 2069 states and 3475 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:06,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:06,678 INFO L93 Difference]: Finished difference Result 5661 states and 9481 transitions. [2024-11-23 23:11:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:11:06,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 681 [2024-11-23 23:11:06,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:06,718 INFO L225 Difference]: With dead ends: 5661 [2024-11-23 23:11:06,718 INFO L226 Difference]: Without dead ends: 3595 [2024-11-23 23:11:06,727 INFO L434 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 [2024-11-23 23:11:06,728 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 346 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:06,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1503 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:11:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2024-11-23 23:11:07,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3591. [2024-11-23 23:11:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3591 states, 2734 states have (on average 1.5713240673006583) internal successors, (4296), 2748 states have internal predecessors, (4296), 840 states have call successors, (840), 16 states have call predecessors, (840), 16 states have return successors, (840), 826 states have call predecessors, (840), 840 states have call successors, (840) [2024-11-23 23:11:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 5976 transitions. [2024-11-23 23:11:07,251 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 5976 transitions. Word has length 681 [2024-11-23 23:11:07,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:07,253 INFO L471 AbstractCegarLoop]: Abstraction has 3591 states and 5976 transitions. [2024-11-23 23:11:07,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 5976 transitions. [2024-11-23 23:11:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2024-11-23 23:11:07,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:07,267 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:07,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:11:07,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:07,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -866045723, now seen corresponding path program 1 times [2024-11-23 23:11:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:07,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057597403] [2024-11-23 23:11:07,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:08,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057597403] [2024-11-23 23:11:08,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057597403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:08,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:08,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:11:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068271610] [2024-11-23 23:11:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:08,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:11:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:08,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:11:08,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:08,117 INFO L87 Difference]: Start difference. First operand 3591 states and 5976 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:08,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:08,973 INFO L93 Difference]: Finished difference Result 9685 states and 16126 transitions. [2024-11-23 23:11:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:11:08,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 681 [2024-11-23 23:11:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:09,032 INFO L225 Difference]: With dead ends: 9685 [2024-11-23 23:11:09,032 INFO L226 Difference]: Without dead ends: 6097 [2024-11-23 23:11:09,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:11:09,051 INFO L435 NwaCegarLoop]: 641 mSDtfsCounter, 283 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:09,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1243 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:11:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6097 states. [2024-11-23 23:11:09,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6097 to 6079. [2024-11-23 23:11:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6079 states, 4822 states have (on average 1.591041061800083) internal successors, (7672), 4852 states have internal predecessors, (7672), 1224 states have call successors, (1224), 32 states have call predecessors, (1224), 32 states have return successors, (1224), 1194 states have call predecessors, (1224), 1224 states have call successors, (1224) [2024-11-23 23:11:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6079 states to 6079 states and 10120 transitions. [2024-11-23 23:11:09,763 INFO L78 Accepts]: Start accepts. Automaton has 6079 states and 10120 transitions. Word has length 681 [2024-11-23 23:11:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:09,766 INFO L471 AbstractCegarLoop]: Abstraction has 6079 states and 10120 transitions. [2024-11-23 23:11:09,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 10120 transitions. [2024-11-23 23:11:09,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2024-11-23 23:11:09,784 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:09,784 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:09,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:11:09,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:09,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:09,786 INFO L85 PathProgramCache]: Analyzing trace with hash 781870651, now seen corresponding path program 1 times [2024-11-23 23:11:09,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:09,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312762395] [2024-11-23 23:11:09,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:09,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:11,064 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:11,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:11,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312762395] [2024-11-23 23:11:11,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312762395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:11,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:11,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:11:11,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613769589] [2024-11-23 23:11:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:11,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:11:11,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:11,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:11:11,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:11:11,070 INFO L87 Difference]: Start difference. First operand 6079 states and 10120 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:12,412 INFO L93 Difference]: Finished difference Result 16334 states and 27356 transitions. [2024-11-23 23:11:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:11:12,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 682 [2024-11-23 23:11:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:12,498 INFO L225 Difference]: With dead ends: 16334 [2024-11-23 23:11:12,498 INFO L226 Difference]: Without dead ends: 10258 [2024-11-23 23:11:12,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:11:12,522 INFO L435 NwaCegarLoop]: 662 mSDtfsCounter, 737 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:12,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1977 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:11:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10258 states. [2024-11-23 23:11:13,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10258 to 9616. [2024-11-23 23:11:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9616 states, 8252 states have (on average 1.6388754241396024) internal successors, (13524), 8282 states have internal predecessors, (13524), 1329 states have call successors, (1329), 34 states have call predecessors, (1329), 34 states have return successors, (1329), 1299 states have call predecessors, (1329), 1329 states have call successors, (1329) [2024-11-23 23:11:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 16182 transitions. [2024-11-23 23:11:13,638 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 16182 transitions. Word has length 682 [2024-11-23 23:11:13,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:13,640 INFO L471 AbstractCegarLoop]: Abstraction has 9616 states and 16182 transitions. [2024-11-23 23:11:13,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:13,641 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 16182 transitions. [2024-11-23 23:11:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2024-11-23 23:11:13,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:13,657 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:13,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:11:13,658 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:13,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash 495263309, now seen corresponding path program 1 times [2024-11-23 23:11:13,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:13,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329459823] [2024-11-23 23:11:13,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:13,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:15,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:15,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329459823] [2024-11-23 23:11:15,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329459823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:15,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:15,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:11:15,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10067405] [2024-11-23 23:11:15,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:15,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:11:15,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:15,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:11:15,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:11:15,248 INFO L87 Difference]: Start difference. First operand 9616 states and 16182 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:19,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 23:11:23,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 23:11:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:24,693 INFO L93 Difference]: Finished difference Result 27544 states and 46446 transitions. [2024-11-23 23:11:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:11:24,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 684 [2024-11-23 23:11:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:24,806 INFO L225 Difference]: With dead ends: 27544 [2024-11-23 23:11:24,806 INFO L226 Difference]: Without dead ends: 18250 [2024-11-23 23:11:24,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:11:24,932 INFO L435 NwaCegarLoop]: 758 mSDtfsCounter, 408 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:24,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 2055 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2024-11-23 23:11:24,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18250 states. [2024-11-23 23:11:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18250 to 18240. [2024-11-23 23:11:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18240 states, 15932 states have (on average 1.6454933467235753) internal successors, (26216), 15994 states have internal predecessors, (26216), 2241 states have call successors, (2241), 66 states have call predecessors, (2241), 66 states have return successors, (2241), 2179 states have call predecessors, (2241), 2241 states have call successors, (2241) [2024-11-23 23:11:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18240 states to 18240 states and 30698 transitions. [2024-11-23 23:11:26,277 INFO L78 Accepts]: Start accepts. Automaton has 18240 states and 30698 transitions. Word has length 684 [2024-11-23 23:11:26,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:26,279 INFO L471 AbstractCegarLoop]: Abstraction has 18240 states and 30698 transitions. [2024-11-23 23:11:26,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 18240 states and 30698 transitions. [2024-11-23 23:11:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2024-11-23 23:11:26,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:26,309 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:26,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:11:26,311 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:26,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:26,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1722367089, now seen corresponding path program 1 times [2024-11-23 23:11:26,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:26,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671489338] [2024-11-23 23:11:26,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:26,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:28,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:28,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671489338] [2024-11-23 23:11:28,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671489338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:28,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:11:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442140436] [2024-11-23 23:11:28,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:28,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:11:28,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:28,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:11:28,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:11:28,827 INFO L87 Difference]: Start difference. First operand 18240 states and 30698 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:11:35,532 INFO L93 Difference]: Finished difference Result 102332 states and 172418 transitions. [2024-11-23 23:11:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:11:35,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 684 [2024-11-23 23:11:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:11:35,968 INFO L225 Difference]: With dead ends: 102332 [2024-11-23 23:11:35,968 INFO L226 Difference]: Without dead ends: 84400 [2024-11-23 23:11:36,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:11:36,049 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 3137 mSDsluCounter, 3468 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 4471 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:11:36,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3137 Valid, 4471 Invalid, 1615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [706 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 23:11:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84400 states. [2024-11-23 23:11:40,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84400 to 59616. [2024-11-23 23:11:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59616 states, 53131 states have (on average 1.6302911671152434) internal successors, (86619), 53319 states have internal predecessors, (86619), 6281 states have call successors, (6281), 203 states have call predecessors, (6281), 203 states have return successors, (6281), 6093 states have call predecessors, (6281), 6281 states have call successors, (6281) [2024-11-23 23:11:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59616 states to 59616 states and 99181 transitions. [2024-11-23 23:11:40,542 INFO L78 Accepts]: Start accepts. Automaton has 59616 states and 99181 transitions. Word has length 684 [2024-11-23 23:11:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:11:40,543 INFO L471 AbstractCegarLoop]: Abstraction has 59616 states and 99181 transitions. [2024-11-23 23:11:40,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:11:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 59616 states and 99181 transitions. [2024-11-23 23:11:41,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2024-11-23 23:11:41,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:11:41,042 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:11:41,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:11:41,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:11:41,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:11:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash 936674953, now seen corresponding path program 1 times [2024-11-23 23:11:41,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:11:41,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480336850] [2024-11-23 23:11:41,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:11:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:11:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:11:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:11:45,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:11:45,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480336850] [2024-11-23 23:11:45,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480336850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:11:45,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:11:45,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 23:11:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009890789] [2024-11-23 23:11:45,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:11:45,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 23:11:45,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:11:45,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 23:11:45,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:11:45,729 INFO L87 Difference]: Start difference. First operand 59616 states and 99181 transitions. Second operand has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2024-11-23 23:12:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:06,404 INFO L93 Difference]: Finished difference Result 295387 states and 487723 transitions. [2024-11-23 23:12:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:12:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 684 [2024-11-23 23:12:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:07,602 INFO L225 Difference]: With dead ends: 295387 [2024-11-23 23:12:07,602 INFO L226 Difference]: Without dead ends: 246841 [2024-11-23 23:12:07,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:12:07,756 INFO L435 NwaCegarLoop]: 1943 mSDtfsCounter, 3674 mSDsluCounter, 7962 mSDsCounter, 0 mSdLazyCounter, 4693 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3674 SdHoareTripleChecker+Valid, 9905 SdHoareTripleChecker+Invalid, 5245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 4693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:07,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3674 Valid, 9905 Invalid, 5245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [552 Valid, 4693 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-23 23:12:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246841 states. [2024-11-23 23:12:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246841 to 246639. [2024-11-23 23:12:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246639 states, 217594 states have (on average 1.6102879674991037) internal successors, (350389), 218442 states have internal predecessors, (350389), 27833 states have call successors, (27833), 1211 states have call predecessors, (27833), 1211 states have return successors, (27833), 26985 states have call predecessors, (27833), 27833 states have call successors, (27833) [2024-11-23 23:12:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246639 states to 246639 states and 406055 transitions. [2024-11-23 23:12:26,282 INFO L78 Accepts]: Start accepts. Automaton has 246639 states and 406055 transitions. Word has length 684 [2024-11-23 23:12:26,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:12:26,284 INFO L471 AbstractCegarLoop]: Abstraction has 246639 states and 406055 transitions. [2024-11-23 23:12:26,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2024-11-23 23:12:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 246639 states and 406055 transitions. [2024-11-23 23:12:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2024-11-23 23:12:26,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:12:26,594 INFO L218 NwaCegarLoop]: trace histogram [105, 105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:12:26,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:12:26,595 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:12:26,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:12:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -121163125, now seen corresponding path program 1 times [2024-11-23 23:12:26,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:12:26,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392250565] [2024-11-23 23:12:26,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:12:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:12:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:12:28,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21840 trivial. 0 not checked. [2024-11-23 23:12:28,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:12:28,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392250565] [2024-11-23 23:12:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392250565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:12:28,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:12:28,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:12:28,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826756418] [2024-11-23 23:12:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:12:28,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:12:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:12:28,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:12:28,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:12:28,619 INFO L87 Difference]: Start difference. First operand 246639 states and 406055 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) [2024-11-23 23:12:32,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 23:12:36,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 23:12:40,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 23:12:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:12:51,286 INFO L93 Difference]: Finished difference Result 441301 states and 725717 transitions. [2024-11-23 23:12:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:12:51,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (105), 1 states have call predecessors, (105), 1 states have return successors, (105), 1 states have call predecessors, (105), 1 states have call successors, (105) Word has length 684 [2024-11-23 23:12:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:12:52,195 INFO L225 Difference]: With dead ends: 441301 [2024-11-23 23:12:52,195 INFO L226 Difference]: Without dead ends: 246737 [2024-11-23 23:12:52,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:12:52,442 INFO L435 NwaCegarLoop]: 755 mSDtfsCounter, 389 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:12:52,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 2894 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2024-11-23 23:12:52,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246737 states.