./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-92.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB --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 ad609929f6a2bce9c8e7d6ce2810824c22896d2feba55c71bcd35f06aeaf9282 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:15:54,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:15:54,412 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:15:54,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:15:54,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:15:54,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:15:54,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:15:54,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:15:54,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:15:54,461 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:15:54,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:15:54,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:15:54,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:15:54,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:15:54,462 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:15:54,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:15:54,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:15:54,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:15:54,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:15:54,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:15:54,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:15:54,463 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:54,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:54,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:54,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:54,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:15:54,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:54,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:54,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:54,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:54,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:15:54,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:15:54,464 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:15:54,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:15:54,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:15:54,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:15:54,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:15:54,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:15:54,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:15:54,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:15:54,468 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_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB 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 -> ad609929f6a2bce9c8e7d6ce2810824c22896d2feba55c71bcd35f06aeaf9282 [2024-11-28 03:15:54,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:15:54,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:15:54,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:15:54,790 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:15:54,791 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:15:54,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-92.i [2024-11-28 03:15:57,815 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/data/3c4558dcc/6de215c6ef0249b09b8e2ec3016e0804/FLAGf69f2a461 [2024-11-28 03:15:58,177 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:15:58,182 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-92.i [2024-11-28 03:15:58,210 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/data/3c4558dcc/6de215c6ef0249b09b8e2ec3016e0804/FLAGf69f2a461 [2024-11-28 03:15:58,390 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/data/3c4558dcc/6de215c6ef0249b09b8e2ec3016e0804 [2024-11-28 03:15:58,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:15:58,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:15:58,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:58,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:15:58,400 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:15:58,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:58" (1/1) ... [2024-11-28 03:15:58,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77505b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:58, skipping insertion in model container [2024-11-28 03:15:58,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:58" (1/1) ... [2024-11-28 03:15:58,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:15:58,642 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_20415410-22ff-431d-90f6-f3adc24f3366/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-92.i[916,929] [2024-11-28 03:15:58,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:58,900 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:15:58,910 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_20415410-22ff-431d-90f6-f3adc24f3366/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-92.i[916,929] [2024-11-28 03:15:59,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:59,076 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:15:59,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59 WrapperNode [2024-11-28 03:15:59,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:59,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:59,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:15:59,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:15:59,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,196 INFO L138 Inliner]: procedures = 26, calls = 81, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 605 [2024-11-28 03:15:59,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:59,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:15:59,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:15:59,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:15:59,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,321 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]. [2024-11-28 03:15:59,325 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,325 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,354 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:15:59,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:15:59,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:15:59,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:15:59,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (1/1) ... [2024-11-28 03:15:59,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:59,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:59,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:15:59,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:15:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:15:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:15:59,476 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:15:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:15:59,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:15:59,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:15:59,668 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:15:59,671 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:16:01,048 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-28 03:16:01,048 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:16:01,066 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:16:01,066 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:16:01,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:01 BoogieIcfgContainer [2024-11-28 03:16:01,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:16:01,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:16:01,070 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:16:01,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:16:01,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:58" (1/3) ... [2024-11-28 03:16:01,076 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac6dc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:01, skipping insertion in model container [2024-11-28 03:16:01,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:59" (2/3) ... [2024-11-28 03:16:01,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac6dc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:01, skipping insertion in model container [2024-11-28 03:16:01,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:01" (3/3) ... [2024-11-28 03:16:01,078 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-92.i [2024-11-28 03:16:01,098 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:16:01,103 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-92.i that has 2 procedures, 245 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:16:01,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:16:01,206 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;@4567aa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:16:01,206 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:16:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 174 states have (on average 1.528735632183908) internal successors, (266), 175 states have internal predecessors, (266), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 03:16:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-28 03:16:01,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:01,246 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:01,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:01,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash 334798459, now seen corresponding path program 1 times [2024-11-28 03:16:01,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:01,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678609181] [2024-11-28 03:16:01,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:01,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2024-11-28 03:16:02,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:02,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678609181] [2024-11-28 03:16:02,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678609181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804752453] [2024-11-28 03:16:02,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:02,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:02,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:02,247 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:02,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:16:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:02,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:16:02,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 8978 trivial. 0 not checked. [2024-11-28 03:16:02,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:16:02,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804752453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:02,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:16:02,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:16:02,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429890613] [2024-11-28 03:16:02,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:02,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:16:02,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:02,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:16:02,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:16:02,934 INFO L87 Difference]: Start difference. First operand has 245 states, 174 states have (on average 1.528735632183908) internal successors, (266), 175 states have internal predecessors, (266), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) [2024-11-28 03:16:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:03,006 INFO L93 Difference]: Finished difference Result 483 states and 866 transitions. [2024-11-28 03:16:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:16:03,008 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) Word has length 466 [2024-11-28 03:16:03,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:03,016 INFO L225 Difference]: With dead ends: 483 [2024-11-28 03:16:03,016 INFO L226 Difference]: Without dead ends: 241 [2024-11-28 03:16:03,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:16:03,024 INFO L435 NwaCegarLoop]: 393 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, 393 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 [2024-11-28 03:16:03,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:16:03,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-28 03:16:03,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2024-11-28 03:16:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 171 states have (on average 1.5029239766081872) internal successors, (257), 171 states have internal predecessors, (257), 68 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 03:16:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 393 transitions. [2024-11-28 03:16:03,130 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 393 transitions. Word has length 466 [2024-11-28 03:16:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:03,130 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 393 transitions. [2024-11-28 03:16:03,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 2 states have call successors, (68) [2024-11-28 03:16:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 393 transitions. [2024-11-28 03:16:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-28 03:16:03,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:03,152 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:03,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:16:03,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20415410-22ff-431d-90f6-f3adc24f3366/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:16:03,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:03,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2086134929, now seen corresponding path program 1 times [2024-11-28 03:16:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:03,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139319392] [2024-11-28 03:16:03,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:03,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:04,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:04,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139319392] [2024-11-28 03:16:04,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139319392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:04,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:04,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:16:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108553532] [2024-11-28 03:16:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:04,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:16:04,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:04,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:04,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:04,198 INFO L87 Difference]: Start difference. First operand 241 states and 393 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:04,367 INFO L93 Difference]: Finished difference Result 602 states and 984 transitions. [2024-11-28 03:16:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:04,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 466 [2024-11-28 03:16:04,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:04,377 INFO L225 Difference]: With dead ends: 602 [2024-11-28 03:16:04,378 INFO L226 Difference]: Without dead ends: 364 [2024-11-28 03:16:04,379 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 [2024-11-28 03:16:04,380 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 197 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:04,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 747 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-28 03:16:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 361. [2024-11-28 03:16:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 286 states have (on average 1.5524475524475525) internal successors, (444), 287 states have internal predecessors, (444), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-28 03:16:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 588 transitions. [2024-11-28 03:16:04,450 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 588 transitions. Word has length 466 [2024-11-28 03:16:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:04,451 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 588 transitions. [2024-11-28 03:16:04,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:04,454 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 588 transitions. [2024-11-28 03:16:04,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-28 03:16:04,464 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:04,465 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:04,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:16:04,465 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:04,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:04,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1838805389, now seen corresponding path program 1 times [2024-11-28 03:16:04,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:04,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423774679] [2024-11-28 03:16:04,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:04,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:05,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:05,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423774679] [2024-11-28 03:16:05,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423774679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:05,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:05,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:16:05,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361625322] [2024-11-28 03:16:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:05,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:16:05,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:05,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:05,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:05,209 INFO L87 Difference]: Start difference. First operand 361 states and 588 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:05,348 INFO L93 Difference]: Finished difference Result 1059 states and 1726 transitions. [2024-11-28 03:16:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:05,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 467 [2024-11-28 03:16:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:05,358 INFO L225 Difference]: With dead ends: 1059 [2024-11-28 03:16:05,358 INFO L226 Difference]: Without dead ends: 701 [2024-11-28 03:16:05,360 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 [2024-11-28 03:16:05,362 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 357 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:05,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 876 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-28 03:16:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 419. [2024-11-28 03:16:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 344 states have (on average 1.572674418604651) internal successors, (541), 345 states have internal predecessors, (541), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-28 03:16:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 685 transitions. [2024-11-28 03:16:05,448 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 685 transitions. Word has length 467 [2024-11-28 03:16:05,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:05,451 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 685 transitions. [2024-11-28 03:16:05,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 685 transitions. [2024-11-28 03:16:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-28 03:16:05,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:05,463 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:05,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:16:05,463 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:05,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2040629323, now seen corresponding path program 1 times [2024-11-28 03:16:05,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:05,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478519596] [2024-11-28 03:16:05,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:06,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:06,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478519596] [2024-11-28 03:16:06,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478519596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:06,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:06,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:16:06,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775452691] [2024-11-28 03:16:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:06,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:16:06,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:06,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:16:06,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:06,564 INFO L87 Difference]: Start difference. First operand 419 states and 685 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:07,093 INFO L93 Difference]: Finished difference Result 1534 states and 2519 transitions. [2024-11-28 03:16:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:16:07,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 467 [2024-11-28 03:16:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:07,105 INFO L225 Difference]: With dead ends: 1534 [2024-11-28 03:16:07,106 INFO L226 Difference]: Without dead ends: 1118 [2024-11-28 03:16:07,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:16:07,108 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 619 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:07,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1545 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:16:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2024-11-28 03:16:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 829. [2024-11-28 03:16:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 680 states have (on average 1.5676470588235294) internal successors, (1066), 682 states have internal predecessors, (1066), 144 states have call successors, (144), 4 states have call predecessors, (144), 4 states have return successors, (144), 142 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-28 03:16:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1354 transitions. [2024-11-28 03:16:07,259 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1354 transitions. Word has length 467 [2024-11-28 03:16:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:07,262 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1354 transitions. [2024-11-28 03:16:07,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1354 transitions. [2024-11-28 03:16:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-28 03:16:07,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:07,274 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:07,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:16:07,275 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:07,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:07,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1752012981, now seen corresponding path program 1 times [2024-11-28 03:16:07,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:07,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968061182] [2024-11-28 03:16:07,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:07,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:08,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968061182] [2024-11-28 03:16:08,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968061182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:08,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:08,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:16:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782530457] [2024-11-28 03:16:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:08,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:08,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:08,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:08,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:08,549 INFO L87 Difference]: Start difference. First operand 829 states and 1354 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:08,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:08,984 INFO L93 Difference]: Finished difference Result 2347 states and 3843 transitions. [2024-11-28 03:16:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:08,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 467 [2024-11-28 03:16:08,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:08,995 INFO L225 Difference]: With dead ends: 2347 [2024-11-28 03:16:08,995 INFO L226 Difference]: Without dead ends: 1521 [2024-11-28 03:16:08,998 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 [2024-11-28 03:16:08,998 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 276 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:08,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1161 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:16:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2024-11-28 03:16:09,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1009. [2024-11-28 03:16:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 790 states have (on average 1.5329113924050632) internal successors, (1211), 792 states have internal predecessors, (1211), 212 states have call successors, (212), 6 states have call predecessors, (212), 6 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-28 03:16:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1635 transitions. [2024-11-28 03:16:09,173 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1635 transitions. Word has length 467 [2024-11-28 03:16:09,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:09,174 INFO L471 AbstractCegarLoop]: Abstraction has 1009 states and 1635 transitions. [2024-11-28 03:16:09,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:09,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1635 transitions. [2024-11-28 03:16:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-28 03:16:09,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:09,184 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:09,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:16:09,185 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:09,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1334616375, now seen corresponding path program 1 times [2024-11-28 03:16:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:09,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674252846] [2024-11-28 03:16:09,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:09,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:10,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:10,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674252846] [2024-11-28 03:16:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674252846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:10,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:10,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:16:10,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778716398] [2024-11-28 03:16:10,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:10,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:10,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:10,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:10,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:10,298 INFO L87 Difference]: Start difference. First operand 1009 states and 1635 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:10,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:10,550 INFO L93 Difference]: Finished difference Result 2032 states and 3291 transitions. [2024-11-28 03:16:10,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:10,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 467 [2024-11-28 03:16:10,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:10,559 INFO L225 Difference]: With dead ends: 2032 [2024-11-28 03:16:10,559 INFO L226 Difference]: Without dead ends: 1206 [2024-11-28 03:16:10,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:10,562 INFO L435 NwaCegarLoop]: 488 mSDtfsCounter, 347 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:10,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1362 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:16:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2024-11-28 03:16:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 997. [2024-11-28 03:16:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 778 states have (on average 1.525706940874036) internal successors, (1187), 780 states have internal predecessors, (1187), 212 states have call successors, (212), 6 states have call predecessors, (212), 6 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-28 03:16:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1611 transitions. [2024-11-28 03:16:10,726 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1611 transitions. Word has length 467 [2024-11-28 03:16:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:10,727 INFO L471 AbstractCegarLoop]: Abstraction has 997 states and 1611 transitions. [2024-11-28 03:16:10,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1611 transitions. [2024-11-28 03:16:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-28 03:16:10,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:10,739 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:10,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:16:10,740 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:10,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1526377077, now seen corresponding path program 1 times [2024-11-28 03:16:10,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:10,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128917731] [2024-11-28 03:16:10,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:10,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128917731] [2024-11-28 03:16:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128917731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:11,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:11,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:16:11,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238806953] [2024-11-28 03:16:11,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:11,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:16:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:11,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:11,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:11,108 INFO L87 Difference]: Start difference. First operand 997 states and 1611 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:11,277 INFO L93 Difference]: Finished difference Result 2379 states and 3853 transitions. [2024-11-28 03:16:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:11,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 467 [2024-11-28 03:16:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:11,288 INFO L225 Difference]: With dead ends: 2379 [2024-11-28 03:16:11,288 INFO L226 Difference]: Without dead ends: 1565 [2024-11-28 03:16:11,291 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 [2024-11-28 03:16:11,291 INFO L435 NwaCegarLoop]: 414 mSDtfsCounter, 303 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:11,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 791 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-28 03:16:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1165. [2024-11-28 03:16:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 946 states have (on average 1.5528541226215644) internal successors, (1469), 948 states have internal predecessors, (1469), 212 states have call successors, (212), 6 states have call predecessors, (212), 6 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-28 03:16:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1893 transitions. [2024-11-28 03:16:11,414 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1893 transitions. Word has length 467 [2024-11-28 03:16:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:11,429 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1893 transitions. [2024-11-28 03:16:11,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1893 transitions. [2024-11-28 03:16:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-28 03:16:11,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:11,436 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:11,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:16:11,436 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:11,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 321353355, now seen corresponding path program 1 times [2024-11-28 03:16:11,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:11,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548140613] [2024-11-28 03:16:11,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:11,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:12,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:12,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548140613] [2024-11-28 03:16:12,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548140613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:12,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:12,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:16:12,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115101291] [2024-11-28 03:16:12,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:12,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:12,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:12,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:12,959 INFO L87 Difference]: Start difference. First operand 1165 states and 1893 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:13,461 INFO L93 Difference]: Finished difference Result 2873 states and 4703 transitions. [2024-11-28 03:16:13,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:13,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 467 [2024-11-28 03:16:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:13,474 INFO L225 Difference]: With dead ends: 2873 [2024-11-28 03:16:13,474 INFO L226 Difference]: Without dead ends: 1833 [2024-11-28 03:16:13,477 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 [2024-11-28 03:16:13,478 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 288 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:13,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1162 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:16:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2024-11-28 03:16:13,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1165. [2024-11-28 03:16:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 946 states have (on average 1.5517970401691332) internal successors, (1468), 948 states have internal predecessors, (1468), 212 states have call successors, (212), 6 states have call predecessors, (212), 6 states have return successors, (212), 210 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-28 03:16:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1892 transitions. [2024-11-28 03:16:13,619 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1892 transitions. Word has length 467 [2024-11-28 03:16:13,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:13,620 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1892 transitions. [2024-11-28 03:16:13,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1892 transitions. [2024-11-28 03:16:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-28 03:16:13,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:13,626 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:13,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:16:13,626 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:13,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash -821149111, now seen corresponding path program 1 times [2024-11-28 03:16:13,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:13,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668542257] [2024-11-28 03:16:13,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:13,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:14,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668542257] [2024-11-28 03:16:14,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668542257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:14,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:14,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:16:14,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746406550] [2024-11-28 03:16:14,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:14,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:16:14,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:14,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:16:14,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:14,928 INFO L87 Difference]: Start difference. First operand 1165 states and 1892 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:15,213 INFO L93 Difference]: Finished difference Result 3137 states and 5122 transitions. [2024-11-28 03:16:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:16:15,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 467 [2024-11-28 03:16:15,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:15,227 INFO L225 Difference]: With dead ends: 3137 [2024-11-28 03:16:15,227 INFO L226 Difference]: Without dead ends: 2155 [2024-11-28 03:16:15,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:16:15,232 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 210 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:15,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1519 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2024-11-28 03:16:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2145. [2024-11-28 03:16:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1778 states have (on average 1.5590551181102361) internal successors, (2772), 1782 states have internal predecessors, (2772), 356 states have call successors, (356), 10 states have call predecessors, (356), 10 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2024-11-28 03:16:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3484 transitions. [2024-11-28 03:16:15,476 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3484 transitions. Word has length 467 [2024-11-28 03:16:15,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:15,477 INFO L471 AbstractCegarLoop]: Abstraction has 2145 states and 3484 transitions. [2024-11-28 03:16:15,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3484 transitions. [2024-11-28 03:16:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-28 03:16:15,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:15,483 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:15,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:16:15,483 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:15,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash 55438735, now seen corresponding path program 1 times [2024-11-28 03:16:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:15,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918496677] [2024-11-28 03:16:15,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:15,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:19,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918496677] [2024-11-28 03:16:19,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918496677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:19,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:19,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:16:19,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123246917] [2024-11-28 03:16:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:19,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:16:19,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:19,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:16:19,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:16:19,230 INFO L87 Difference]: Start difference. First operand 2145 states and 3484 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:20,620 INFO L93 Difference]: Finished difference Result 7817 states and 12744 transitions. [2024-11-28 03:16:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:16:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 468 [2024-11-28 03:16:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:20,648 INFO L225 Difference]: With dead ends: 7817 [2024-11-28 03:16:20,648 INFO L226 Difference]: Without dead ends: 5855 [2024-11-28 03:16:20,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:16:20,655 INFO L435 NwaCegarLoop]: 766 mSDtfsCounter, 1021 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:20,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 2270 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:16:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2024-11-28 03:16:21,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 4105. [2024-11-28 03:16:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4105 states, 3442 states have (on average 1.5607205113306217) internal successors, (5372), 3450 states have internal predecessors, (5372), 644 states have call successors, (644), 18 states have call predecessors, (644), 18 states have return successors, (644), 636 states have call predecessors, (644), 644 states have call successors, (644) [2024-11-28 03:16:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 6660 transitions. [2024-11-28 03:16:21,173 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 6660 transitions. Word has length 468 [2024-11-28 03:16:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:21,174 INFO L471 AbstractCegarLoop]: Abstraction has 4105 states and 6660 transitions. [2024-11-28 03:16:21,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 6660 transitions. [2024-11-28 03:16:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-28 03:16:21,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:21,182 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:21,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:16:21,183 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:21,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:21,183 INFO L85 PathProgramCache]: Analyzing trace with hash 499339409, now seen corresponding path program 1 times [2024-11-28 03:16:21,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:21,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632372902] [2024-11-28 03:16:21,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:21,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:23,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:23,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632372902] [2024-11-28 03:16:23,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632372902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:23,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:23,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:16:23,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100555765] [2024-11-28 03:16:23,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:23,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:23,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:23,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:23,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:23,154 INFO L87 Difference]: Start difference. First operand 4105 states and 6660 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:23,672 INFO L93 Difference]: Finished difference Result 9355 states and 15177 transitions. [2024-11-28 03:16:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 468 [2024-11-28 03:16:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:23,701 INFO L225 Difference]: With dead ends: 9355 [2024-11-28 03:16:23,701 INFO L226 Difference]: Without dead ends: 5433 [2024-11-28 03:16:23,712 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 [2024-11-28 03:16:23,713 INFO L435 NwaCegarLoop]: 695 mSDtfsCounter, 419 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:23,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1577 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:16:23,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2024-11-28 03:16:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 3965. [2024-11-28 03:16:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3334 states have (on average 1.5494901019796041) internal successors, (5166), 3334 states have internal predecessors, (5166), 612 states have call successors, (612), 18 states have call predecessors, (612), 18 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2024-11-28 03:16:24,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 6390 transitions. [2024-11-28 03:16:24,114 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 6390 transitions. Word has length 468 [2024-11-28 03:16:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:24,115 INFO L471 AbstractCegarLoop]: Abstraction has 3965 states and 6390 transitions. [2024-11-28 03:16:24,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:24,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 6390 transitions. [2024-11-28 03:16:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:16:24,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:24,121 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:24,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:16:24,121 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:24,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:24,122 INFO L85 PathProgramCache]: Analyzing trace with hash -207298926, now seen corresponding path program 1 times [2024-11-28 03:16:24,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:24,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659463125] [2024-11-28 03:16:24,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:24,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:25,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659463125] [2024-11-28 03:16:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659463125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:25,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:25,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:16:25,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651153322] [2024-11-28 03:16:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:25,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:25,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:25,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:25,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:25,049 INFO L87 Difference]: Start difference. First operand 3965 states and 6390 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:25,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:25,461 INFO L93 Difference]: Finished difference Result 7817 states and 12536 transitions. [2024-11-28 03:16:25,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:25,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2024-11-28 03:16:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:25,500 INFO L225 Difference]: With dead ends: 7817 [2024-11-28 03:16:25,500 INFO L226 Difference]: Without dead ends: 4047 [2024-11-28 03:16:25,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:25,510 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 337 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:25,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1106 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:16:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2024-11-28 03:16:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 3701. [2024-11-28 03:16:25,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3701 states, 3070 states have (on average 1.5355048859934854) internal successors, (4714), 3070 states have internal predecessors, (4714), 612 states have call successors, (612), 18 states have call predecessors, (612), 18 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2024-11-28 03:16:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 5938 transitions. [2024-11-28 03:16:25,880 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 5938 transitions. Word has length 469 [2024-11-28 03:16:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:25,881 INFO L471 AbstractCegarLoop]: Abstraction has 3701 states and 5938 transitions. [2024-11-28 03:16:25,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 5938 transitions. [2024-11-28 03:16:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:16:25,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:25,887 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:25,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:16:25,887 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:25,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash 540632464, now seen corresponding path program 1 times [2024-11-28 03:16:25,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:25,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178900019] [2024-11-28 03:16:25,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178900019] [2024-11-28 03:16:27,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178900019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:27,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:16:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757435556] [2024-11-28 03:16:27,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:27,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:27,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:27,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:27,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:27,856 INFO L87 Difference]: Start difference. First operand 3701 states and 5938 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:28,322 INFO L93 Difference]: Finished difference Result 8495 states and 13539 transitions. [2024-11-28 03:16:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:28,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2024-11-28 03:16:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:28,349 INFO L225 Difference]: With dead ends: 8495 [2024-11-28 03:16:28,349 INFO L226 Difference]: Without dead ends: 4989 [2024-11-28 03:16:28,358 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 [2024-11-28 03:16:28,359 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 415 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:28,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 1204 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:16:28,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4989 states. [2024-11-28 03:16:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4989 to 3953. [2024-11-28 03:16:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3322 states have (on average 1.5340156532209512) internal successors, (5096), 3322 states have internal predecessors, (5096), 612 states have call successors, (612), 18 states have call predecessors, (612), 18 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2024-11-28 03:16:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 6320 transitions. [2024-11-28 03:16:28,809 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 6320 transitions. Word has length 469 [2024-11-28 03:16:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:28,810 INFO L471 AbstractCegarLoop]: Abstraction has 3953 states and 6320 transitions. [2024-11-28 03:16:28,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 6320 transitions. [2024-11-28 03:16:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:16:28,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:28,816 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:28,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:16:28,817 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:28,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash -426718190, now seen corresponding path program 1 times [2024-11-28 03:16:28,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:28,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643011167] [2024-11-28 03:16:28,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:28,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:29,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:29,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643011167] [2024-11-28 03:16:29,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643011167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:29,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:29,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:16:29,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547436713] [2024-11-28 03:16:29,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:29,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:16:29,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:29,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:16:29,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:16:29,666 INFO L87 Difference]: Start difference. First operand 3953 states and 6320 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:29,919 INFO L93 Difference]: Finished difference Result 5851 states and 9383 transitions. [2024-11-28 03:16:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:29,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2024-11-28 03:16:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:29,935 INFO L225 Difference]: With dead ends: 5851 [2024-11-28 03:16:29,936 INFO L226 Difference]: Without dead ends: 3977 [2024-11-28 03:16:29,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:29,941 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 3 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:29,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1162 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:16:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2024-11-28 03:16:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3977. [2024-11-28 03:16:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3346 states have (on average 1.5301852958756725) internal successors, (5120), 3346 states have internal predecessors, (5120), 612 states have call successors, (612), 18 states have call predecessors, (612), 18 states have return successors, (612), 612 states have call predecessors, (612), 612 states have call successors, (612) [2024-11-28 03:16:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 6344 transitions. [2024-11-28 03:16:30,235 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 6344 transitions. Word has length 469 [2024-11-28 03:16:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:30,236 INFO L471 AbstractCegarLoop]: Abstraction has 3977 states and 6344 transitions. [2024-11-28 03:16:30,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 6344 transitions. [2024-11-28 03:16:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:16:30,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:30,242 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:30,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:16:30,243 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:30,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash -907798448, now seen corresponding path program 1 times [2024-11-28 03:16:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:30,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020943550] [2024-11-28 03:16:30,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:32,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:32,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020943550] [2024-11-28 03:16:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020943550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:32,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:16:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409777238] [2024-11-28 03:16:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:32,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:16:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:32,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:16:32,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:32,006 INFO L87 Difference]: Start difference. First operand 3977 states and 6344 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:34,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:34,209 INFO L93 Difference]: Finished difference Result 15501 states and 24862 transitions. [2024-11-28 03:16:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:16:34,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2024-11-28 03:16:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:34,254 INFO L225 Difference]: With dead ends: 15501 [2024-11-28 03:16:34,254 INFO L226 Difference]: Without dead ends: 11731 [2024-11-28 03:16:34,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:34,268 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 1126 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:34,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1731 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:16:34,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11731 states. [2024-11-28 03:16:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11731 to 6605. [2024-11-28 03:16:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6605 states, 5526 states have (on average 1.5392689106044155) internal successors, (8506), 5534 states have internal predecessors, (8506), 1044 states have call successors, (1044), 34 states have call predecessors, (1044), 34 states have return successors, (1044), 1036 states have call predecessors, (1044), 1044 states have call successors, (1044) [2024-11-28 03:16:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 10594 transitions. [2024-11-28 03:16:35,019 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 10594 transitions. Word has length 469 [2024-11-28 03:16:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:35,020 INFO L471 AbstractCegarLoop]: Abstraction has 6605 states and 10594 transitions. [2024-11-28 03:16:35,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:16:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 10594 transitions. [2024-11-28 03:16:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:16:35,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:35,029 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:35,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:16:35,029 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:35,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash -347098670, now seen corresponding path program 1 times [2024-11-28 03:16:35,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:35,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371905589] [2024-11-28 03:16:35,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:35,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:16:49,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:49,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371905589] [2024-11-28 03:16:49,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371905589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:49,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:49,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 03:16:49,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034296743] [2024-11-28 03:16:49,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:49,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:16:49,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:49,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:16:49,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:16:49,150 INFO L87 Difference]: Start difference. First operand 6605 states and 10594 transitions. Second operand has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 4 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2024-11-28 03:16:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:58,467 INFO L93 Difference]: Finished difference Result 17217 states and 27479 transitions. [2024-11-28 03:16:58,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:16:58,468 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 4 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 469 [2024-11-28 03:16:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:58,511 INFO L225 Difference]: With dead ends: 17217 [2024-11-28 03:16:58,512 INFO L226 Difference]: Without dead ends: 14007 [2024-11-28 03:16:58,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=338, Invalid=1068, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:16:58,523 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 3640 mSDsluCounter, 3671 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3640 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:58,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3640 Valid, 4039 Invalid, 3450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 03:16:58,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14007 states. [2024-11-28 03:16:59,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14007 to 10515. [2024-11-28 03:16:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10515 states, 9260 states have (on average 1.5561555075593954) internal successors, (14410), 9284 states have internal predecessors, (14410), 1188 states have call successors, (1188), 66 states have call predecessors, (1188), 66 states have return successors, (1188), 1164 states have call predecessors, (1188), 1188 states have call successors, (1188) [2024-11-28 03:16:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10515 states to 10515 states and 16786 transitions. [2024-11-28 03:16:59,429 INFO L78 Accepts]: Start accepts. Automaton has 10515 states and 16786 transitions. Word has length 469 [2024-11-28 03:16:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:59,431 INFO L471 AbstractCegarLoop]: Abstraction has 10515 states and 16786 transitions. [2024-11-28 03:16:59,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 4 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2024-11-28 03:16:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 10515 states and 16786 transitions. [2024-11-28 03:16:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:16:59,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:59,445 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:59,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:16:59,446 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:16:59,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:59,446 INFO L85 PathProgramCache]: Analyzing trace with hash 234427434, now seen corresponding path program 1 times [2024-11-28 03:16:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:59,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609442235] [2024-11-28 03:16:59,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:59,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:17:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:17:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:14,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609442235] [2024-11-28 03:17:14,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609442235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:17:14,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:17:14,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 03:17:14,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064725712] [2024-11-28 03:17:14,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:17:14,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:17:14,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:14,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:17:14,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:17:14,363 INFO L87 Difference]: Start difference. First operand 10515 states and 16786 transitions. Second operand has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 5 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 5 states have call predecessors, (68), 5 states have call successors, (68) [2024-11-28 03:17:34,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:34,911 INFO L93 Difference]: Finished difference Result 25085 states and 39899 transitions. [2024-11-28 03:17:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:17:34,912 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 5 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 5 states have call predecessors, (68), 5 states have call successors, (68) Word has length 469 [2024-11-28 03:17:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:34,973 INFO L225 Difference]: With dead ends: 25085 [2024-11-28 03:17:34,973 INFO L226 Difference]: Without dead ends: 21267 [2024-11-28 03:17:34,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=299, Invalid=1033, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:17:34,985 INFO L435 NwaCegarLoop]: 758 mSDtfsCounter, 3802 mSDsluCounter, 5336 mSDsCounter, 0 mSdLazyCounter, 6231 mSolverCounterSat, 991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3802 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 7222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 6231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:34,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3802 Valid, 6094 Invalid, 7222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [991 Valid, 6231 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2024-11-28 03:17:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21267 states. [2024-11-28 03:17:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21267 to 17019. [2024-11-28 03:17:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17019 states, 15184 states have (on average 1.5630927291886196) internal successors, (23734), 15232 states have internal predecessors, (23734), 1700 states have call successors, (1700), 134 states have call predecessors, (1700), 134 states have return successors, (1700), 1652 states have call predecessors, (1700), 1700 states have call successors, (1700) [2024-11-28 03:17:36,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17019 states to 17019 states and 27134 transitions. [2024-11-28 03:17:36,704 INFO L78 Accepts]: Start accepts. Automaton has 17019 states and 27134 transitions. Word has length 469 [2024-11-28 03:17:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:36,705 INFO L471 AbstractCegarLoop]: Abstraction has 17019 states and 27134 transitions. [2024-11-28 03:17:36,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 5 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 5 states have call predecessors, (68), 5 states have call successors, (68) [2024-11-28 03:17:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 17019 states and 27134 transitions. [2024-11-28 03:17:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:17:36,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:36,729 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:36,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:17:36,730 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:36,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash -638924217, now seen corresponding path program 1 times [2024-11-28 03:17:36,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:36,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601512306] [2024-11-28 03:17:36,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:17:36,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:17:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:17:45,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:17:45,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601512306] [2024-11-28 03:17:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601512306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:17:45,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:17:45,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:17:45,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058632681] [2024-11-28 03:17:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:17:45,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:17:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:17:45,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:17:45,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:17:45,605 INFO L87 Difference]: Start difference. First operand 17019 states and 27134 transitions. Second operand has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 5 states have call predecessors, (68), 5 states have call successors, (68) [2024-11-28 03:17:51,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:51,255 INFO L93 Difference]: Finished difference Result 26993 states and 42963 transitions. [2024-11-28 03:17:51,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:17:51,256 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 5 states have call predecessors, (68), 5 states have call successors, (68) Word has length 469 [2024-11-28 03:17:51,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:51,319 INFO L225 Difference]: With dead ends: 26993 [2024-11-28 03:17:51,319 INFO L226 Difference]: Without dead ends: 20299 [2024-11-28 03:17:51,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:17:51,337 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 1666 mSDsluCounter, 3922 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 4615 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:51,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 4615 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:17:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20299 states. [2024-11-28 03:17:52,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20299 to 15587. [2024-11-28 03:17:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15587 states, 13750 states have (on average 1.551709090909091) internal successors, (21336), 13798 states have internal predecessors, (21336), 1700 states have call successors, (1700), 136 states have call predecessors, (1700), 136 states have return successors, (1700), 1652 states have call predecessors, (1700), 1700 states have call successors, (1700) [2024-11-28 03:17:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15587 states to 15587 states and 24736 transitions. [2024-11-28 03:17:53,014 INFO L78 Accepts]: Start accepts. Automaton has 15587 states and 24736 transitions. Word has length 469 [2024-11-28 03:17:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:53,015 INFO L471 AbstractCegarLoop]: Abstraction has 15587 states and 24736 transitions. [2024-11-28 03:17:53,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.8) internal successors, (132), 15 states have internal predecessors, (132), 5 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 5 states have call predecessors, (68), 5 states have call successors, (68) [2024-11-28 03:17:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 15587 states and 24736 transitions. [2024-11-28 03:17:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:17:53,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:53,030 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:53,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:17:53,030 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:17:53,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:53,031 INFO L85 PathProgramCache]: Analyzing trace with hash 606841488, now seen corresponding path program 1 times [2024-11-28 03:17:53,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:17:53,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648711743] [2024-11-28 03:17:53,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:17:53,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:17:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:18:02,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:02,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648711743] [2024-11-28 03:18:02,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648711743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:02,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:02,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:18:02,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994000898] [2024-11-28 03:18:02,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:02,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:18:02,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:02,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:18:02,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:18:02,262 INFO L87 Difference]: Start difference. First operand 15587 states and 24736 transitions. Second operand has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 3 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2024-11-28 03:18:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:11,322 INFO L93 Difference]: Finished difference Result 53925 states and 84917 transitions. [2024-11-28 03:18:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:18:11,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 3 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 469 [2024-11-28 03:18:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:11,442 INFO L225 Difference]: With dead ends: 53925 [2024-11-28 03:18:11,442 INFO L226 Difference]: Without dead ends: 43559 [2024-11-28 03:18:11,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:18:11,469 INFO L435 NwaCegarLoop]: 657 mSDtfsCounter, 4620 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 1242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1242 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:11,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4620 Valid, 2873 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1242 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 03:18:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43559 states. [2024-11-28 03:18:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43559 to 32761. [2024-11-28 03:18:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32761 states, 29692 states have (on average 1.5788091068301227) internal successors, (46878), 29764 states have internal predecessors, (46878), 2868 states have call successors, (2868), 200 states have call predecessors, (2868), 200 states have return successors, (2868), 2796 states have call predecessors, (2868), 2868 states have call successors, (2868) [2024-11-28 03:18:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32761 states to 32761 states and 52614 transitions. [2024-11-28 03:18:14,935 INFO L78 Accepts]: Start accepts. Automaton has 32761 states and 52614 transitions. Word has length 469 [2024-11-28 03:18:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:14,935 INFO L471 AbstractCegarLoop]: Abstraction has 32761 states and 52614 transitions. [2024-11-28 03:18:14,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.428571428571429) internal successors, (132), 14 states have internal predecessors, (132), 3 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2024-11-28 03:18:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 32761 states and 52614 transitions. [2024-11-28 03:18:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:18:14,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:14,959 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:14,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:18:14,960 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:14,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash 534454930, now seen corresponding path program 1 times [2024-11-28 03:18:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478576341] [2024-11-28 03:18:14,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:14,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:18:18,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:18,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478576341] [2024-11-28 03:18:18,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478576341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:18,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:18,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:18:18,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062947062] [2024-11-28 03:18:18,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:18,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:18:18,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:18,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:18:18,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:18:18,890 INFO L87 Difference]: Start difference. First operand 32761 states and 52614 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:18:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:22,968 INFO L93 Difference]: Finished difference Result 62645 states and 99119 transitions. [2024-11-28 03:18:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:18:22,969 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) Word has length 469 [2024-11-28 03:18:22,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:23,051 INFO L225 Difference]: With dead ends: 62645 [2024-11-28 03:18:23,051 INFO L226 Difference]: Without dead ends: 40455 [2024-11-28 03:18:23,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:18:23,086 INFO L435 NwaCegarLoop]: 679 mSDtfsCounter, 520 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:23,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 2318 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:18:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40455 states. [2024-11-28 03:18:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40455 to 36137. [2024-11-28 03:18:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36137 states, 32804 states have (on average 1.5619436654066576) internal successors, (51238), 32964 states have internal predecessors, (51238), 3044 states have call successors, (3044), 288 states have call predecessors, (3044), 288 states have return successors, (3044), 2884 states have call predecessors, (3044), 3044 states have call successors, (3044) [2024-11-28 03:18:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36137 states to 36137 states and 57326 transitions. [2024-11-28 03:18:25,986 INFO L78 Accepts]: Start accepts. Automaton has 36137 states and 57326 transitions. Word has length 469 [2024-11-28 03:18:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:25,987 INFO L471 AbstractCegarLoop]: Abstraction has 36137 states and 57326 transitions. [2024-11-28 03:18:25,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 1 states have call predecessors, (68), 1 states have call successors, (68) [2024-11-28 03:18:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 36137 states and 57326 transitions. [2024-11-28 03:18:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:18:26,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:26,010 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:26,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:18:26,010 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:26,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash 305914161, now seen corresponding path program 1 times [2024-11-28 03:18:26,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:26,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832768677] [2024-11-28 03:18:26,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:26,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:18:35,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832768677] [2024-11-28 03:18:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832768677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:35,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:35,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 03:18:35,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491740489] [2024-11-28 03:18:35,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:35,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:18:35,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:35,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:18:35,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:18:35,476 INFO L87 Difference]: Start difference. First operand 36137 states and 57326 transitions. Second operand has 18 states, 18 states have (on average 7.333333333333333) internal successors, (132), 18 states have internal predecessors, (132), 6 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2024-11-28 03:18:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:49,348 INFO L93 Difference]: Finished difference Result 59417 states and 94443 transitions. [2024-11-28 03:18:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:18:49,349 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.333333333333333) internal successors, (132), 18 states have internal predecessors, (132), 6 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) Word has length 469 [2024-11-28 03:18:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:49,428 INFO L225 Difference]: With dead ends: 59417 [2024-11-28 03:18:49,428 INFO L226 Difference]: Without dead ends: 45227 [2024-11-28 03:18:49,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:18:49,455 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 2714 mSDsluCounter, 4253 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 4787 SdHoareTripleChecker+Invalid, 3247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:49,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2714 Valid, 4787 Invalid, 3247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-28 03:18:49,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45227 states. [2024-11-28 03:18:52,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45227 to 36185. [2024-11-28 03:18:52,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36185 states, 32852 states have (on average 1.5611226104955558) internal successors, (51286), 33012 states have internal predecessors, (51286), 3044 states have call successors, (3044), 288 states have call predecessors, (3044), 288 states have return successors, (3044), 2884 states have call predecessors, (3044), 3044 states have call successors, (3044) [2024-11-28 03:18:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36185 states to 36185 states and 57374 transitions. [2024-11-28 03:18:52,524 INFO L78 Accepts]: Start accepts. Automaton has 36185 states and 57374 transitions. Word has length 469 [2024-11-28 03:18:52,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:52,525 INFO L471 AbstractCegarLoop]: Abstraction has 36185 states and 57374 transitions. [2024-11-28 03:18:52,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.333333333333333) internal successors, (132), 18 states have internal predecessors, (132), 6 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 6 states have call predecessors, (68), 6 states have call successors, (68) [2024-11-28 03:18:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 36185 states and 57374 transitions. [2024-11-28 03:18:52,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:18:52,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:52,544 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:52,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:18:52,544 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:52,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash -47174221, now seen corresponding path program 1 times [2024-11-28 03:18:52,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:52,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697233519] [2024-11-28 03:18:52,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:52,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2024-11-28 03:18:56,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:56,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697233519] [2024-11-28 03:18:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697233519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:56,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:18:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816245748] [2024-11-28 03:18:56,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:56,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:18:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:56,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:18:56,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:18:56,479 INFO L87 Difference]: Start difference. First operand 36185 states and 57374 transitions. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 4 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2024-11-28 03:19:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:03,612 INFO L93 Difference]: Finished difference Result 86437 states and 136851 transitions. [2024-11-28 03:19:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:19:03,613 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 4 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) Word has length 469 [2024-11-28 03:19:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:03,699 INFO L225 Difference]: With dead ends: 86437 [2024-11-28 03:19:03,699 INFO L226 Difference]: Without dead ends: 57687 [2024-11-28 03:19:03,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:19:03,736 INFO L435 NwaCegarLoop]: 586 mSDtfsCounter, 3216 mSDsluCounter, 3014 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3216 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:03,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3216 Valid, 3600 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 03:19:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57687 states. [2024-11-28 03:19:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57687 to 42135. [2024-11-28 03:19:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42135 states, 38663 states have (on average 1.5703644311098466) internal successors, (60715), 38839 states have internal predecessors, (60715), 3156 states have call successors, (3156), 315 states have call predecessors, (3156), 315 states have return successors, (3156), 2980 states have call predecessors, (3156), 3156 states have call successors, (3156) [2024-11-28 03:19:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42135 states to 42135 states and 67027 transitions. [2024-11-28 03:19:07,904 INFO L78 Accepts]: Start accepts. Automaton has 42135 states and 67027 transitions. Word has length 469 [2024-11-28 03:19:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:07,904 INFO L471 AbstractCegarLoop]: Abstraction has 42135 states and 67027 transitions. [2024-11-28 03:19:07,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 4 states have call successors, (68), 1 states have call predecessors, (68), 1 states have return successors, (68), 4 states have call predecessors, (68), 4 states have call successors, (68) [2024-11-28 03:19:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 42135 states and 67027 transitions. [2024-11-28 03:19:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-28 03:19:07,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:07,950 INFO L218 NwaCegarLoop]: trace histogram [68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:19:07,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:19:07,950 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:19:07,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -910239565, now seen corresponding path program 1 times [2024-11-28 03:19:07,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:07,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899667399] [2024-11-28 03:19:07,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:19:07,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms