./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.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_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1 --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 2cc8613549263fa9e280e7172125d1234167e6a3b8c0b538287580172fa36964 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:27:34,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:27:34,409 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:27:34,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:27:34,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:27:34,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:27:34,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:27:34,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:27:34,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:27:34,438 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:27:34,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:27:34,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:27:34,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:27:34,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:27:34,438 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:27:34,438 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:27:34,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:27:34,439 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:27:34,439 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:27:34,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:27:34,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:27:34,440 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:27:34,441 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:27:34,441 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:27:34,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:27:34,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:27:34,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:27:34,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:27:34,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:27:34,441 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_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1 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 -> 2cc8613549263fa9e280e7172125d1234167e6a3b8c0b538287580172fa36964 [2024-12-02 13:27:34,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:27:34,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:27:34,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:27:34,667 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:27:34,668 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:27:34,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i [2024-12-02 13:27:37,306 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/data/be7012436/9f37896b08204808a0275a705b666542/FLAG471f70593 [2024-12-02 13:27:37,553 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:27:37,554 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i [2024-12-02 13:27:37,566 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/data/be7012436/9f37896b08204808a0275a705b666542/FLAG471f70593 [2024-12-02 13:27:37,873 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/data/be7012436/9f37896b08204808a0275a705b666542 [2024-12-02 13:27:37,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:27:37,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:27:37,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:27:37,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:27:37,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:27:37,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:27:37" (1/1) ... [2024-12-02 13:27:37,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e1db07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:37, skipping insertion in model container [2024-12-02 13:27:37,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:27:37" (1/1) ... [2024-12-02 13:27:37,912 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:27:38,046 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_572acdad-e7ca-488c-b2d7-0bdbd004e20b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i[915,928] [2024-12-02 13:27:38,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:27:38,192 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:27:38,199 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_572acdad-e7ca-488c-b2d7-0bdbd004e20b/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-0.i[915,928] [2024-12-02 13:27:38,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:27:38,294 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:27:38,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38 WrapperNode [2024-12-02 13:27:38,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:27:38,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:27:38,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:27:38,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:27:38,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,369 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 657 [2024-12-02 13:27:38,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:27:38,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:27:38,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:27:38,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:27:38,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,409 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]. [2024-12-02 13:27:38,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,426 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,444 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:27:38,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:27:38,452 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:27:38,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:27:38,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (1/1) ... [2024-12-02 13:27:38,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:27:38,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:27:38,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:27:38,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:27:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:27:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:27:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:27:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:27:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:27:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:27:38,631 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:27:38,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:27:39,622 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-02 13:27:39,622 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:27:39,637 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:27:39,637 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:27:39,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:27:39 BoogieIcfgContainer [2024-12-02 13:27:39,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:27:39,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:27:39,640 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:27:39,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:27:39,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:27:37" (1/3) ... [2024-12-02 13:27:39,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd72e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:27:39, skipping insertion in model container [2024-12-02 13:27:39,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:27:38" (2/3) ... [2024-12-02 13:27:39,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd72e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:27:39, skipping insertion in model container [2024-12-02 13:27:39,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:27:39" (3/3) ... [2024-12-02 13:27:39,646 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-0.i [2024-12-02 13:27:39,661 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:27:39,663 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-0.i that has 2 procedures, 270 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:27:39,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:27:39,731 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;@62a4e189, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:27:39,731 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:27:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 270 states, 188 states have (on average 1.6329787234042554) internal successors, (307), 189 states have internal predecessors, (307), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-12-02 13:27:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-12-02 13:27:39,757 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:39,758 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:39,758 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:39,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash 93741000, now seen corresponding path program 1 times [2024-12-02 13:27:39,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:39,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211497568] [2024-12-02 13:27:39,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:39,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2024-12-02 13:27:40,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211497568] [2024-12-02 13:27:40,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211497568] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:27:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095016093] [2024-12-02 13:27:40,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:40,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:27:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:27:40,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:27:40,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:27:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:40,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:27:40,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:27:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2024-12-02 13:27:40,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:27:40,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095016093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:40,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:27:40,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 13:27:40,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191333068] [2024-12-02 13:27:40,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:40,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:27:40,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:40,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:27:40,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:27:40,860 INFO L87 Difference]: Start difference. First operand has 270 states, 188 states have (on average 1.6329787234042554) internal successors, (307), 189 states have internal predecessors, (307), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2024-12-02 13:27:40,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:40,916 INFO L93 Difference]: Finished difference Result 531 states and 999 transitions. [2024-12-02 13:27:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:27:40,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) Word has length 533 [2024-12-02 13:27:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:40,926 INFO L225 Difference]: With dead ends: 531 [2024-12-02 13:27:40,926 INFO L226 Difference]: Without dead ends: 264 [2024-12-02 13:27:40,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:27:40,934 INFO L435 NwaCegarLoop]: 452 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, 452 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 [2024-12-02 13:27:40,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:27:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-12-02 13:27:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-12-02 13:27:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 183 states have (on average 1.6065573770491803) internal successors, (294), 183 states have internal predecessors, (294), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-12-02 13:27:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 452 transitions. [2024-12-02 13:27:41,004 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 452 transitions. Word has length 533 [2024-12-02 13:27:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:41,004 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 452 transitions. [2024-12-02 13:27:41,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2024-12-02 13:27:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 452 transitions. [2024-12-02 13:27:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-12-02 13:27:41,019 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:41,020 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:41,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 13:27:41,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 13:27:41,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:41,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:41,221 INFO L85 PathProgramCache]: Analyzing trace with hash 534948378, now seen corresponding path program 1 times [2024-12-02 13:27:41,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:41,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412372811] [2024-12-02 13:27:41,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:41,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412372811] [2024-12-02 13:27:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412372811] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:41,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:41,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:27:41,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743066661] [2024-12-02 13:27:41,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:41,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:27:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:41,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:27:41,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:27:41,943 INFO L87 Difference]: Start difference. First operand 264 states and 452 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:42,040 INFO L93 Difference]: Finished difference Result 750 states and 1280 transitions. [2024-12-02 13:27:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:27:42,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 533 [2024-12-02 13:27:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:42,046 INFO L225 Difference]: With dead ends: 750 [2024-12-02 13:27:42,046 INFO L226 Difference]: Without dead ends: 489 [2024-12-02 13:27:42,048 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 [2024-12-02 13:27:42,048 INFO L435 NwaCegarLoop]: 672 mSDtfsCounter, 369 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:42,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1104 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:27:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-12-02 13:27:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 334. [2024-12-02 13:27:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 253 states have (on average 1.6640316205533596) internal successors, (421), 253 states have internal predecessors, (421), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-12-02 13:27:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 579 transitions. [2024-12-02 13:27:42,100 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 579 transitions. Word has length 533 [2024-12-02 13:27:42,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:42,102 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 579 transitions. [2024-12-02 13:27:42,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 579 transitions. [2024-12-02 13:27:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-12-02 13:27:42,113 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:42,114 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:42,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:27:42,114 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:42,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:42,115 INFO L85 PathProgramCache]: Analyzing trace with hash 42322204, now seen corresponding path program 1 times [2024-12-02 13:27:42,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:42,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245385378] [2024-12-02 13:27:42,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:42,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:42,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:42,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245385378] [2024-12-02 13:27:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245385378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:42,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:27:42,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583612584] [2024-12-02 13:27:42,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:42,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:27:42,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:42,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:27:42,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:27:42,458 INFO L87 Difference]: Start difference. First operand 334 states and 579 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:42,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:42,528 INFO L93 Difference]: Finished difference Result 820 states and 1403 transitions. [2024-12-02 13:27:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:27:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 533 [2024-12-02 13:27:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:42,534 INFO L225 Difference]: With dead ends: 820 [2024-12-02 13:27:42,534 INFO L226 Difference]: Without dead ends: 489 [2024-12-02 13:27:42,536 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 [2024-12-02 13:27:42,536 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 362 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:42,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 906 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:27:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-12-02 13:27:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 334. [2024-12-02 13:27:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 253 states have (on average 1.6442687747035574) internal successors, (416), 253 states have internal predecessors, (416), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2024-12-02 13:27:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 574 transitions. [2024-12-02 13:27:42,576 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 574 transitions. Word has length 533 [2024-12-02 13:27:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:42,577 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 574 transitions. [2024-12-02 13:27:42,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:42,577 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 574 transitions. [2024-12-02 13:27:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-12-02 13:27:42,581 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:42,582 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:42,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:27:42,582 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:42,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash -814396324, now seen corresponding path program 1 times [2024-12-02 13:27:42,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:42,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991675210] [2024-12-02 13:27:42,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:42,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:43,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:43,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991675210] [2024-12-02 13:27:43,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991675210] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:43,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:43,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:27:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074602828] [2024-12-02 13:27:43,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:43,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:27:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:43,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:27:43,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:43,084 INFO L87 Difference]: Start difference. First operand 334 states and 574 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:43,283 INFO L93 Difference]: Finished difference Result 996 states and 1716 transitions. [2024-12-02 13:27:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:27:43,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 533 [2024-12-02 13:27:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:43,290 INFO L225 Difference]: With dead ends: 996 [2024-12-02 13:27:43,290 INFO L226 Difference]: Without dead ends: 665 [2024-12-02 13:27:43,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:43,291 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 483 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:43,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 878 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:27:43,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-12-02 13:27:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2024-12-02 13:27:43,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 502 states have (on average 1.6454183266932272) internal successors, (826), 502 states have internal predecessors, (826), 158 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2024-12-02 13:27:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1142 transitions. [2024-12-02 13:27:43,351 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1142 transitions. Word has length 533 [2024-12-02 13:27:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:43,352 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1142 transitions. [2024-12-02 13:27:43,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1142 transitions. [2024-12-02 13:27:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:27:43,357 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:43,357 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:43,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:27:43,358 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:43,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2109773709, now seen corresponding path program 1 times [2024-12-02 13:27:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151365284] [2024-12-02 13:27:43,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:43,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:44,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151365284] [2024-12-02 13:27:44,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151365284] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:44,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:44,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:27:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514760072] [2024-12-02 13:27:44,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:44,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:27:44,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:44,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:27:44,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:27:44,148 INFO L87 Difference]: Start difference. First operand 663 states and 1142 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:44,671 INFO L93 Difference]: Finished difference Result 1821 states and 3147 transitions. [2024-12-02 13:27:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:27:44,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:27:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:44,678 INFO L225 Difference]: With dead ends: 1821 [2024-12-02 13:27:44,678 INFO L226 Difference]: Without dead ends: 1161 [2024-12-02 13:27:44,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:27:44,681 INFO L435 NwaCegarLoop]: 447 mSDtfsCounter, 432 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:44,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1611 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:27:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2024-12-02 13:27:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1129. [2024-12-02 13:27:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 888 states have (on average 1.6745495495495495) internal successors, (1487), 888 states have internal predecessors, (1487), 237 states have call successors, (237), 3 states have call predecessors, (237), 3 states have return successors, (237), 237 states have call predecessors, (237), 237 states have call successors, (237) [2024-12-02 13:27:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1961 transitions. [2024-12-02 13:27:44,757 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1961 transitions. Word has length 534 [2024-12-02 13:27:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:44,758 INFO L471 AbstractCegarLoop]: Abstraction has 1129 states and 1961 transitions. [2024-12-02 13:27:44,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:44,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1961 transitions. [2024-12-02 13:27:44,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:27:44,761 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:44,761 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:44,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:27:44,762 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:44,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1522967695, now seen corresponding path program 1 times [2024-12-02 13:27:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082473240] [2024-12-02 13:27:44,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:44,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:45,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:45,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082473240] [2024-12-02 13:27:45,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082473240] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:45,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:45,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:27:45,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328860857] [2024-12-02 13:27:45,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:45,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:27:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:45,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:27:45,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:27:45,270 INFO L87 Difference]: Start difference. First operand 1129 states and 1961 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:46,335 INFO L93 Difference]: Finished difference Result 4213 states and 7318 transitions. [2024-12-02 13:27:46,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:27:46,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:27:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:46,352 INFO L225 Difference]: With dead ends: 4213 [2024-12-02 13:27:46,352 INFO L226 Difference]: Without dead ends: 3481 [2024-12-02 13:27:46,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:27:46,355 INFO L435 NwaCegarLoop]: 650 mSDtfsCounter, 959 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:46,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2527 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 13:27:46,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2024-12-02 13:27:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 3171. [2024-12-02 13:27:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 2692 states have (on average 1.7072808320950965) internal successors, (4596), 2694 states have internal predecessors, (4596), 471 states have call successors, (471), 7 states have call predecessors, (471), 7 states have return successors, (471), 469 states have call predecessors, (471), 471 states have call successors, (471) [2024-12-02 13:27:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 5538 transitions. [2024-12-02 13:27:46,598 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 5538 transitions. Word has length 534 [2024-12-02 13:27:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:46,599 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 5538 transitions. [2024-12-02 13:27:46,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:46,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 5538 transitions. [2024-12-02 13:27:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:27:46,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:46,605 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:46,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:27:46,605 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:46,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1385796207, now seen corresponding path program 1 times [2024-12-02 13:27:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:46,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327132423] [2024-12-02 13:27:46,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:47,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:47,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327132423] [2024-12-02 13:27:47,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327132423] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:47,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:47,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:27:47,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528018599] [2024-12-02 13:27:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:47,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:27:47,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:47,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:27:47,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:47,180 INFO L87 Difference]: Start difference. First operand 3171 states and 5538 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:47,926 INFO L93 Difference]: Finished difference Result 7083 states and 12317 transitions. [2024-12-02 13:27:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:27:47,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:27:47,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:47,951 INFO L225 Difference]: With dead ends: 7083 [2024-12-02 13:27:47,952 INFO L226 Difference]: Without dead ends: 4867 [2024-12-02 13:27:47,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:27:47,958 INFO L435 NwaCegarLoop]: 650 mSDtfsCounter, 771 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:47,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1680 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:27:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2024-12-02 13:27:48,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4861. [2024-12-02 13:27:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4861 states, 4222 states have (on average 1.7067740407389862) internal successors, (7206), 4228 states have internal predecessors, (7206), 627 states have call successors, (627), 11 states have call predecessors, (627), 11 states have return successors, (627), 621 states have call predecessors, (627), 627 states have call successors, (627) [2024-12-02 13:27:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4861 states to 4861 states and 8460 transitions. [2024-12-02 13:27:48,304 INFO L78 Accepts]: Start accepts. Automaton has 4861 states and 8460 transitions. Word has length 534 [2024-12-02 13:27:48,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:48,305 INFO L471 AbstractCegarLoop]: Abstraction has 4861 states and 8460 transitions. [2024-12-02 13:27:48,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:48,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4861 states and 8460 transitions. [2024-12-02 13:27:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:27:48,311 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:48,311 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:48,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:27:48,312 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:48,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -356436909, now seen corresponding path program 1 times [2024-12-02 13:27:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:48,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926475614] [2024-12-02 13:27:48,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926475614] [2024-12-02 13:27:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926475614] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:49,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:49,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:27:49,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112306831] [2024-12-02 13:27:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:49,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:27:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:49,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:27:49,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:49,362 INFO L87 Difference]: Start difference. First operand 4861 states and 8460 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:49,790 INFO L93 Difference]: Finished difference Result 10877 states and 18753 transitions. [2024-12-02 13:27:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:27:49,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:27:49,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:49,813 INFO L225 Difference]: With dead ends: 10877 [2024-12-02 13:27:49,813 INFO L226 Difference]: Without dead ends: 7915 [2024-12-02 13:27:49,820 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 [2024-12-02 13:27:49,821 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 468 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:49,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1344 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:27:49,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2024-12-02 13:27:50,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 7791. [2024-12-02 13:27:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 6594 states have (on average 1.6878980891719746) internal successors, (11130), 6606 states have internal predecessors, (11130), 1175 states have call successors, (1175), 21 states have call predecessors, (1175), 21 states have return successors, (1175), 1163 states have call predecessors, (1175), 1175 states have call successors, (1175) [2024-12-02 13:27:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 13480 transitions. [2024-12-02 13:27:50,189 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 13480 transitions. Word has length 534 [2024-12-02 13:27:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:50,190 INFO L471 AbstractCegarLoop]: Abstraction has 7791 states and 13480 transitions. [2024-12-02 13:27:50,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 13480 transitions. [2024-12-02 13:27:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:27:50,197 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:50,197 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:50,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:27:50,198 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:50,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1377505263, now seen corresponding path program 1 times [2024-12-02 13:27:50,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:50,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623801609] [2024-12-02 13:27:50,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:50,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:51,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:51,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623801609] [2024-12-02 13:27:51,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623801609] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:51,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:51,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:27:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689348564] [2024-12-02 13:27:51,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:51,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:27:51,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:51,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:27:51,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:51,130 INFO L87 Difference]: Start difference. First operand 7791 states and 13480 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:51,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:51,788 INFO L93 Difference]: Finished difference Result 22872 states and 39395 transitions. [2024-12-02 13:27:51,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:27:51,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:27:51,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:51,851 INFO L225 Difference]: With dead ends: 22872 [2024-12-02 13:27:51,851 INFO L226 Difference]: Without dead ends: 16524 [2024-12-02 13:27:51,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:51,870 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 574 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:51,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1116 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:27:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16524 states. [2024-12-02 13:27:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16524 to 14182. [2024-12-02 13:27:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14182 states, 12684 states have (on average 1.7105014191106906) internal successors, (21696), 12716 states have internal predecessors, (21696), 1455 states have call successors, (1455), 42 states have call predecessors, (1455), 42 states have return successors, (1455), 1423 states have call predecessors, (1455), 1455 states have call successors, (1455) [2024-12-02 13:27:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14182 states to 14182 states and 24606 transitions. [2024-12-02 13:27:52,689 INFO L78 Accepts]: Start accepts. Automaton has 14182 states and 24606 transitions. Word has length 534 [2024-12-02 13:27:52,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:52,690 INFO L471 AbstractCegarLoop]: Abstraction has 14182 states and 24606 transitions. [2024-12-02 13:27:52,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand 14182 states and 24606 transitions. [2024-12-02 13:27:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:27:52,700 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:52,700 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:52,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:27:52,700 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:52,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:52,701 INFO L85 PathProgramCache]: Analyzing trace with hash -484018925, now seen corresponding path program 1 times [2024-12-02 13:27:52,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:52,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718526599] [2024-12-02 13:27:52,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:52,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:53,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:53,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718526599] [2024-12-02 13:27:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718526599] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:53,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:53,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:27:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773622019] [2024-12-02 13:27:53,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:53,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:27:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:53,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:27:53,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:53,722 INFO L87 Difference]: Start difference. First operand 14182 states and 24606 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:55,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:55,233 INFO L93 Difference]: Finished difference Result 39886 states and 68227 transitions. [2024-12-02 13:27:55,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:27:55,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:27:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:55,330 INFO L225 Difference]: With dead ends: 39886 [2024-12-02 13:27:55,330 INFO L226 Difference]: Without dead ends: 27228 [2024-12-02 13:27:55,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:55,355 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 851 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:55,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1468 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:27:55,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27228 states. [2024-12-02 13:27:56,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27228 to 17764. [2024-12-02 13:27:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17764 states, 16266 states have (on average 1.7285134636665438) internal successors, (28116), 16298 states have internal predecessors, (28116), 1455 states have call successors, (1455), 42 states have call predecessors, (1455), 42 states have return successors, (1455), 1423 states have call predecessors, (1455), 1455 states have call successors, (1455) [2024-12-02 13:27:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17764 states to 17764 states and 31026 transitions. [2024-12-02 13:27:56,497 INFO L78 Accepts]: Start accepts. Automaton has 17764 states and 31026 transitions. Word has length 534 [2024-12-02 13:27:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:56,498 INFO L471 AbstractCegarLoop]: Abstraction has 17764 states and 31026 transitions. [2024-12-02 13:27:56,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 17764 states and 31026 transitions. [2024-12-02 13:27:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:27:56,505 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:56,505 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:56,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:27:56,505 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:56,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1483766485, now seen corresponding path program 1 times [2024-12-02 13:27:56,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:56,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855361994] [2024-12-02 13:27:56,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:56,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:56,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855361994] [2024-12-02 13:27:56,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855361994] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:56,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:56,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:27:56,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775526140] [2024-12-02 13:27:56,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:56,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:27:56,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:56,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:27:56,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:27:56,794 INFO L87 Difference]: Start difference. First operand 17764 states and 31026 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:57,186 INFO L93 Difference]: Finished difference Result 37134 states and 64896 transitions. [2024-12-02 13:27:57,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:27:57,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:27:57,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:57,225 INFO L225 Difference]: With dead ends: 37134 [2024-12-02 13:27:57,225 INFO L226 Difference]: Without dead ends: 20512 [2024-12-02 13:27:57,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:27:57,243 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 314 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:57,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1087 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:27:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20512 states. [2024-12-02 13:27:58,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20512 to 20510. [2024-12-02 13:27:58,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20510 states, 18632 states have (on average 1.72992700729927) internal successors, (32232), 18668 states have internal predecessors, (32232), 1827 states have call successors, (1827), 50 states have call predecessors, (1827), 50 states have return successors, (1827), 1791 states have call predecessors, (1827), 1827 states have call successors, (1827) [2024-12-02 13:27:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20510 states to 20510 states and 35886 transitions. [2024-12-02 13:27:58,056 INFO L78 Accepts]: Start accepts. Automaton has 20510 states and 35886 transitions. Word has length 534 [2024-12-02 13:27:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:27:58,057 INFO L471 AbstractCegarLoop]: Abstraction has 20510 states and 35886 transitions. [2024-12-02 13:27:58,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 20510 states and 35886 transitions. [2024-12-02 13:27:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:27:58,064 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:27:58,064 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:27:58,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:27:58,065 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:27:58,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:27:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1478712623, now seen corresponding path program 1 times [2024-12-02 13:27:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:27:58,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509220925] [2024-12-02 13:27:58,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:27:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:27:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:27:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:27:58,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:27:58,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509220925] [2024-12-02 13:27:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509220925] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:27:58,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:27:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:27:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495208784] [2024-12-02 13:27:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:27:58,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:27:58,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:27:58,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:27:58,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:27:58,786 INFO L87 Difference]: Start difference. First operand 20510 states and 35886 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:27:59,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:27:59,743 INFO L93 Difference]: Finished difference Result 72136 states and 125945 transitions. [2024-12-02 13:27:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:27:59,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:27:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:27:59,802 INFO L225 Difference]: With dead ends: 72136 [2024-12-02 13:27:59,803 INFO L226 Difference]: Without dead ends: 51864 [2024-12-02 13:27:59,826 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 [2024-12-02 13:27:59,827 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 449 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:27:59,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1604 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:27:59,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51864 states. [2024-12-02 13:28:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51864 to 31766. [2024-12-02 13:28:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31766 states, 29888 states have (on average 1.7525428265524625) internal successors, (52380), 29924 states have internal predecessors, (52380), 1827 states have call successors, (1827), 50 states have call predecessors, (1827), 50 states have return successors, (1827), 1791 states have call predecessors, (1827), 1827 states have call successors, (1827) [2024-12-02 13:28:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31766 states to 31766 states and 56034 transitions. [2024-12-02 13:28:00,832 INFO L78 Accepts]: Start accepts. Automaton has 31766 states and 56034 transitions. Word has length 534 [2024-12-02 13:28:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:00,833 INFO L471 AbstractCegarLoop]: Abstraction has 31766 states and 56034 transitions. [2024-12-02 13:28:00,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 31766 states and 56034 transitions. [2024-12-02 13:28:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:28:00,845 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:00,845 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:00,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:28:00,846 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:00,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:00,846 INFO L85 PathProgramCache]: Analyzing trace with hash -153856429, now seen corresponding path program 1 times [2024-12-02 13:28:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:00,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278166044] [2024-12-02 13:28:00,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:00,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:28:01,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:01,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278166044] [2024-12-02 13:28:01,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278166044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:28:01,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:28:01,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:28:01,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090411499] [2024-12-02 13:28:01,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:28:01,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:28:01,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:01,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:28:01,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:28:01,393 INFO L87 Difference]: Start difference. First operand 31766 states and 56034 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:02,160 INFO L93 Difference]: Finished difference Result 77558 states and 136318 transitions. [2024-12-02 13:28:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:28:02,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:28:02,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:02,212 INFO L225 Difference]: With dead ends: 77558 [2024-12-02 13:28:02,212 INFO L226 Difference]: Without dead ends: 48852 [2024-12-02 13:28:02,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:28:02,236 INFO L435 NwaCegarLoop]: 664 mSDtfsCounter, 297 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:02,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1106 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:28:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48852 states. [2024-12-02 13:28:03,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48852 to 48850. [2024-12-02 13:28:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48850 states, 45176 states have (on average 1.7299893748893218) internal successors, (78154), 45248 states have internal predecessors, (78154), 3575 states have call successors, (3575), 98 states have call predecessors, (3575), 98 states have return successors, (3575), 3503 states have call predecessors, (3575), 3575 states have call successors, (3575) [2024-12-02 13:28:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48850 states to 48850 states and 85304 transitions. [2024-12-02 13:28:03,921 INFO L78 Accepts]: Start accepts. Automaton has 48850 states and 85304 transitions. Word has length 534 [2024-12-02 13:28:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:03,921 INFO L471 AbstractCegarLoop]: Abstraction has 48850 states and 85304 transitions. [2024-12-02 13:28:03,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 48850 states and 85304 transitions. [2024-12-02 13:28:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:28:03,936 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:03,936 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:03,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:28:03,937 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:03,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1152034769, now seen corresponding path program 1 times [2024-12-02 13:28:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940714864] [2024-12-02 13:28:03,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:03,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 51 proven. 183 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-12-02 13:28:04,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:04,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940714864] [2024-12-02 13:28:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940714864] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:28:04,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745428623] [2024-12-02 13:28:04,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:04,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:28:04,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:28:04,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:28:04,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:28:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:05,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:28:05,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:28:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 4600 proven. 177 refuted. 0 times theorem prover too weak. 7547 trivial. 0 not checked. [2024-12-02 13:28:05,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:28:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 57 proven. 177 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-12-02 13:28:06,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745428623] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:28:06,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:28:06,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-12-02 13:28:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173781205] [2024-12-02 13:28:06,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:28:06,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:28:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:06,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:28:06,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:28:06,152 INFO L87 Difference]: Start difference. First operand 48850 states and 85304 transitions. Second operand has 8 states, 8 states have (on average 28.25) internal successors, (226), 8 states have internal predecessors, (226), 3 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 3 states have call predecessors, (201), 3 states have call successors, (201) [2024-12-02 13:28:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:07,496 INFO L93 Difference]: Finished difference Result 97880 states and 170187 transitions. [2024-12-02 13:28:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 13:28:07,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.25) internal successors, (226), 8 states have internal predecessors, (226), 3 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 3 states have call predecessors, (201), 3 states have call successors, (201) Word has length 534 [2024-12-02 13:28:07,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:07,563 INFO L225 Difference]: With dead ends: 97880 [2024-12-02 13:28:07,564 INFO L226 Difference]: Without dead ends: 49634 [2024-12-02 13:28:07,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1082 GetRequests, 1065 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2024-12-02 13:28:07,602 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 692 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:07,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 907 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:28:07,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49634 states. [2024-12-02 13:28:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49634 to 49242. [2024-12-02 13:28:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49242 states, 45470 states have (on average 1.6860347481856168) internal successors, (76664), 45542 states have internal predecessors, (76664), 3575 states have call successors, (3575), 196 states have call predecessors, (3575), 196 states have return successors, (3575), 3503 states have call predecessors, (3575), 3575 states have call successors, (3575) [2024-12-02 13:28:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49242 states to 49242 states and 83814 transitions. [2024-12-02 13:28:09,169 INFO L78 Accepts]: Start accepts. Automaton has 49242 states and 83814 transitions. Word has length 534 [2024-12-02 13:28:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:09,169 INFO L471 AbstractCegarLoop]: Abstraction has 49242 states and 83814 transitions. [2024-12-02 13:28:09,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.25) internal successors, (226), 8 states have internal predecessors, (226), 3 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 3 states have call predecessors, (201), 3 states have call successors, (201) [2024-12-02 13:28:09,170 INFO L276 IsEmpty]: Start isEmpty. Operand 49242 states and 83814 transitions. [2024-12-02 13:28:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2024-12-02 13:28:09,179 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:09,179 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:09,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:28:09,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 13:28:09,379 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:09,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:09,380 INFO L85 PathProgramCache]: Analyzing trace with hash -967186419, now seen corresponding path program 1 times [2024-12-02 13:28:09,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:09,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607958387] [2024-12-02 13:28:09,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:28:10,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:10,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607958387] [2024-12-02 13:28:10,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607958387] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:28:10,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:28:10,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:28:10,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458614214] [2024-12-02 13:28:10,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:28:10,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:28:10,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:10,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:28:10,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:28:10,006 INFO L87 Difference]: Start difference. First operand 49242 states and 83814 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:11,896 INFO L93 Difference]: Finished difference Result 101488 states and 171727 transitions. [2024-12-02 13:28:11,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:28:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 534 [2024-12-02 13:28:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:11,973 INFO L225 Difference]: With dead ends: 101488 [2024-12-02 13:28:11,973 INFO L226 Difference]: Without dead ends: 56348 [2024-12-02 13:28:12,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:28:12,016 INFO L435 NwaCegarLoop]: 733 mSDtfsCounter, 563 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:12,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 2017 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:28:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56348 states. [2024-12-02 13:28:13,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56348 to 31738. [2024-12-02 13:28:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31738 states, 28638 states have (on average 1.6845450101264055) internal successors, (48242), 28662 states have internal predecessors, (48242), 2903 states have call successors, (2903), 196 states have call predecessors, (2903), 196 states have return successors, (2903), 2879 states have call predecessors, (2903), 2903 states have call successors, (2903) [2024-12-02 13:28:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31738 states to 31738 states and 54048 transitions. [2024-12-02 13:28:13,293 INFO L78 Accepts]: Start accepts. Automaton has 31738 states and 54048 transitions. Word has length 534 [2024-12-02 13:28:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:13,294 INFO L471 AbstractCegarLoop]: Abstraction has 31738 states and 54048 transitions. [2024-12-02 13:28:13,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:13,294 INFO L276 IsEmpty]: Start isEmpty. Operand 31738 states and 54048 transitions. [2024-12-02 13:28:13,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-12-02 13:28:13,306 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:13,306 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:13,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:28:13,307 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:13,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:13,307 INFO L85 PathProgramCache]: Analyzing trace with hash -494017165, now seen corresponding path program 1 times [2024-12-02 13:28:13,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:13,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136249251] [2024-12-02 13:28:13,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:13,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:28:13,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136249251] [2024-12-02 13:28:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136249251] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:28:13,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:28:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:28:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175895257] [2024-12-02 13:28:13,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:28:13,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:28:13,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:13,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:28:13,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:28:13,749 INFO L87 Difference]: Start difference. First operand 31738 states and 54048 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:14,496 INFO L93 Difference]: Finished difference Result 59292 states and 100897 transitions. [2024-12-02 13:28:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:28:14,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2024-12-02 13:28:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:14,545 INFO L225 Difference]: With dead ends: 59292 [2024-12-02 13:28:14,545 INFO L226 Difference]: Without dead ends: 31738 [2024-12-02 13:28:14,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:28:14,572 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 268 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:14,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 443 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:28:14,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31738 states. [2024-12-02 13:28:15,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31738 to 31738. [2024-12-02 13:28:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31738 states, 28638 states have (on average 1.6711362525316014) internal successors, (47858), 28662 states have internal predecessors, (47858), 2903 states have call successors, (2903), 196 states have call predecessors, (2903), 196 states have return successors, (2903), 2879 states have call predecessors, (2903), 2903 states have call successors, (2903) [2024-12-02 13:28:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31738 states to 31738 states and 53664 transitions. [2024-12-02 13:28:15,913 INFO L78 Accepts]: Start accepts. Automaton has 31738 states and 53664 transitions. Word has length 535 [2024-12-02 13:28:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:15,914 INFO L471 AbstractCegarLoop]: Abstraction has 31738 states and 53664 transitions. [2024-12-02 13:28:15,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 31738 states and 53664 transitions. [2024-12-02 13:28:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-12-02 13:28:15,925 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:15,925 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:15,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:28:15,925 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:15,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash 177776051, now seen corresponding path program 1 times [2024-12-02 13:28:15,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:15,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252936211] [2024-12-02 13:28:15,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:15,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:16,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:28:16,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252936211] [2024-12-02 13:28:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252936211] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:28:16,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:28:16,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:28:16,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082451848] [2024-12-02 13:28:16,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:28:16,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:28:16,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:16,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:28:16,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:28:16,715 INFO L87 Difference]: Start difference. First operand 31738 states and 53664 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:18,341 INFO L93 Difference]: Finished difference Result 77098 states and 128942 transitions. [2024-12-02 13:28:18,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:28:18,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2024-12-02 13:28:18,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:18,433 INFO L225 Difference]: With dead ends: 77098 [2024-12-02 13:28:18,433 INFO L226 Difference]: Without dead ends: 48072 [2024-12-02 13:28:18,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:28:18,461 INFO L435 NwaCegarLoop]: 576 mSDtfsCounter, 504 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:18,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1810 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:28:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48072 states. [2024-12-02 13:28:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48072 to 42640. [2024-12-02 13:28:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42640 states, 38675 states have (on average 1.6553070458952812) internal successors, (64019), 38747 states have internal predecessors, (64019), 3671 states have call successors, (3671), 293 states have call predecessors, (3671), 293 states have return successors, (3671), 3599 states have call predecessors, (3671), 3671 states have call successors, (3671) [2024-12-02 13:28:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42640 states to 42640 states and 71361 transitions. [2024-12-02 13:28:20,268 INFO L78 Accepts]: Start accepts. Automaton has 42640 states and 71361 transitions. Word has length 535 [2024-12-02 13:28:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:20,269 INFO L471 AbstractCegarLoop]: Abstraction has 42640 states and 71361 transitions. [2024-12-02 13:28:20,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 42640 states and 71361 transitions. [2024-12-02 13:28:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-12-02 13:28:20,285 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:20,285 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:20,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 13:28:20,285 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:20,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash -592957515, now seen corresponding path program 1 times [2024-12-02 13:28:20,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:20,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656315408] [2024-12-02 13:28:20,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:20,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:28:21,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:21,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656315408] [2024-12-02 13:28:21,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656315408] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:28:21,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:28:21,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 13:28:21,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064978338] [2024-12-02 13:28:21,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:28:21,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 13:28:21,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:21,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 13:28:21,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:28:21,134 INFO L87 Difference]: Start difference. First operand 42640 states and 71361 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:24,183 INFO L93 Difference]: Finished difference Result 101286 states and 167140 transitions. [2024-12-02 13:28:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:28:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2024-12-02 13:28:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:24,282 INFO L225 Difference]: With dead ends: 101286 [2024-12-02 13:28:24,282 INFO L226 Difference]: Without dead ends: 68420 [2024-12-02 13:28:24,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:28:24,319 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 734 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:24,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1770 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:28:24,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68420 states. [2024-12-02 13:28:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68420 to 34478. [2024-12-02 13:28:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34478 states, 31329 states have (on average 1.6721567876408439) internal successors, (52387), 31353 states have internal predecessors, (52387), 2903 states have call successors, (2903), 245 states have call predecessors, (2903), 245 states have return successors, (2903), 2879 states have call predecessors, (2903), 2903 states have call successors, (2903) [2024-12-02 13:28:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34478 states to 34478 states and 58193 transitions. [2024-12-02 13:28:25,848 INFO L78 Accepts]: Start accepts. Automaton has 34478 states and 58193 transitions. Word has length 535 [2024-12-02 13:28:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:25,848 INFO L471 AbstractCegarLoop]: Abstraction has 34478 states and 58193 transitions. [2024-12-02 13:28:25,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 34478 states and 58193 transitions. [2024-12-02 13:28:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-12-02 13:28:25,855 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:25,855 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:25,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 13:28:25,855 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:25,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2019205899, now seen corresponding path program 1 times [2024-12-02 13:28:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744063016] [2024-12-02 13:28:25,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:28:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:26,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744063016] [2024-12-02 13:28:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744063016] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:28:26,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:28:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:28:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634851972] [2024-12-02 13:28:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:28:26,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:28:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:26,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:28:26,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:28:26,063 INFO L87 Difference]: Start difference. First operand 34478 states and 58193 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2024-12-02 13:28:27,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:27,648 INFO L93 Difference]: Finished difference Result 83234 states and 139983 transitions. [2024-12-02 13:28:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:28:27,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 535 [2024-12-02 13:28:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:27,718 INFO L225 Difference]: With dead ends: 83234 [2024-12-02 13:28:27,718 INFO L226 Difference]: Without dead ends: 51472 [2024-12-02 13:28:27,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:28:27,752 INFO L435 NwaCegarLoop]: 687 mSDtfsCounter, 778 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:27,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1098 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:28:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51472 states. [2024-12-02 13:28:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51472 to 48190. [2024-12-02 13:28:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48190 states, 44321 states have (on average 1.6606800388077887) internal successors, (73603), 44361 states have internal predecessors, (73603), 3543 states have call successors, (3543), 325 states have call predecessors, (3543), 325 states have return successors, (3543), 3503 states have call predecessors, (3543), 3543 states have call successors, (3543) [2024-12-02 13:28:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48190 states to 48190 states and 80689 transitions. [2024-12-02 13:28:30,001 INFO L78 Accepts]: Start accepts. Automaton has 48190 states and 80689 transitions. Word has length 535 [2024-12-02 13:28:30,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:30,002 INFO L471 AbstractCegarLoop]: Abstraction has 48190 states and 80689 transitions. [2024-12-02 13:28:30,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2024-12-02 13:28:30,002 INFO L276 IsEmpty]: Start isEmpty. Operand 48190 states and 80689 transitions. [2024-12-02 13:28:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-12-02 13:28:30,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:30,009 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:30,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 13:28:30,010 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:30,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:30,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1783135223, now seen corresponding path program 1 times [2024-12-02 13:28:30,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:30,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917918015] [2024-12-02 13:28:30,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:30,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:28:30,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:30,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917918015] [2024-12-02 13:28:30,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917918015] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:28:30,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:28:30,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 13:28:30,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839928946] [2024-12-02 13:28:30,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:28:30,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:28:30,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:30,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:28:30,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:28:30,507 INFO L87 Difference]: Start difference. First operand 48190 states and 80689 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:34,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:34,610 INFO L93 Difference]: Finished difference Result 140032 states and 232806 transitions. [2024-12-02 13:28:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:28:34,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2024-12-02 13:28:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:34,744 INFO L225 Difference]: With dead ends: 140032 [2024-12-02 13:28:34,744 INFO L226 Difference]: Without dead ends: 98834 [2024-12-02 13:28:34,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:28:34,793 INFO L435 NwaCegarLoop]: 440 mSDtfsCounter, 811 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:34,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1646 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:28:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98834 states. [2024-12-02 13:28:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98834 to 54846. [2024-12-02 13:28:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54846 states, 50977 states have (on average 1.6466837985758283) internal successors, (83943), 51017 states have internal predecessors, (83943), 3543 states have call successors, (3543), 325 states have call predecessors, (3543), 325 states have return successors, (3543), 3503 states have call predecessors, (3543), 3543 states have call successors, (3543) [2024-12-02 13:28:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54846 states to 54846 states and 91029 transitions. [2024-12-02 13:28:37,091 INFO L78 Accepts]: Start accepts. Automaton has 54846 states and 91029 transitions. Word has length 535 [2024-12-02 13:28:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:37,092 INFO L471 AbstractCegarLoop]: Abstraction has 54846 states and 91029 transitions. [2024-12-02 13:28:37,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 54846 states and 91029 transitions. [2024-12-02 13:28:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-12-02 13:28:37,100 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:37,100 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:37,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 13:28:37,100 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:37,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:37,101 INFO L85 PathProgramCache]: Analyzing trace with hash 822888331, now seen corresponding path program 1 times [2024-12-02 13:28:37,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:37,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157468476] [2024-12-02 13:28:37,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:37,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 42 proven. 192 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-12-02 13:28:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157468476] [2024-12-02 13:28:37,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157468476] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:28:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829872533] [2024-12-02 13:28:37,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:37,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:28:37,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:28:37,520 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:28:37,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:28:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:37,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 13:28:37,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:28:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 1950 proven. 18 refuted. 0 times theorem prover too weak. 10356 trivial. 0 not checked. [2024-12-02 13:28:38,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:28:38,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 216 proven. 18 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-12-02 13:28:38,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829872533] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:28:38,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:28:38,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-12-02 13:28:38,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810438086] [2024-12-02 13:28:38,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:28:38,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 13:28:38,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:38,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 13:28:38,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:28:38,487 INFO L87 Difference]: Start difference. First operand 54846 states and 91029 transitions. Second operand has 15 states, 15 states have (on average 20.2) internal successors, (303), 15 states have internal predecessors, (303), 4 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (151), 4 states have call predecessors, (151), 4 states have call successors, (151) [2024-12-02 13:28:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:44,556 INFO L93 Difference]: Finished difference Result 160532 states and 265250 transitions. [2024-12-02 13:28:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 13:28:44,557 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.2) internal successors, (303), 15 states have internal predecessors, (303), 4 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (151), 4 states have call predecessors, (151), 4 states have call successors, (151) Word has length 535 [2024-12-02 13:28:44,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:44,699 INFO L225 Difference]: With dead ends: 160532 [2024-12-02 13:28:44,699 INFO L226 Difference]: Without dead ends: 85770 [2024-12-02 13:28:44,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1105 GetRequests, 1063 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=495, Invalid=1397, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 13:28:44,759 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 2458 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 1535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1535 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:44,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 1830 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1535 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 13:28:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85770 states. [2024-12-02 13:28:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85770 to 50471. [2024-12-02 13:28:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50471 states, 42078 states have (on average 1.554589096439945) internal successors, (65414), 42198 states have internal predecessors, (65414), 7447 states have call successors, (7447), 945 states have call predecessors, (7447), 945 states have return successors, (7447), 7327 states have call predecessors, (7447), 7447 states have call successors, (7447) [2024-12-02 13:28:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50471 states to 50471 states and 80308 transitions. [2024-12-02 13:28:49,555 INFO L78 Accepts]: Start accepts. Automaton has 50471 states and 80308 transitions. Word has length 535 [2024-12-02 13:28:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:49,555 INFO L471 AbstractCegarLoop]: Abstraction has 50471 states and 80308 transitions. [2024-12-02 13:28:49,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.2) internal successors, (303), 15 states have internal predecessors, (303), 4 states have call successors, (149), 2 states have call predecessors, (149), 4 states have return successors, (151), 4 states have call predecessors, (151), 4 states have call successors, (151) [2024-12-02 13:28:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 50471 states and 80308 transitions. [2024-12-02 13:28:49,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-12-02 13:28:49,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:49,571 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:49,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:28:49,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 13:28:49,771 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:49,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash 602404698, now seen corresponding path program 1 times [2024-12-02 13:28:49,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:49,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571314895] [2024-12-02 13:28:49,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:49,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:28:49,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571314895] [2024-12-02 13:28:49,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571314895] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:28:49,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:28:49,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:28:49,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902946959] [2024-12-02 13:28:49,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:28:49,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:28:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:49,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:28:49,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:28:49,946 INFO L87 Difference]: Start difference. First operand 50471 states and 80308 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:28:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:56,285 INFO L93 Difference]: Finished difference Result 122371 states and 192518 transitions. [2024-12-02 13:28:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:28:56,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 537 [2024-12-02 13:28:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:56,426 INFO L225 Difference]: With dead ends: 122371 [2024-12-02 13:28:56,426 INFO L226 Difference]: Without dead ends: 75869 [2024-12-02 13:28:56,486 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 [2024-12-02 13:28:56,488 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 390 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:56,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 954 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:28:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75869 states. [2024-12-02 13:29:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75869 to 52655. [2024-12-02 13:29:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52655 states, 44262 states have (on average 1.5524377569924541) internal successors, (68714), 44382 states have internal predecessors, (68714), 7447 states have call successors, (7447), 945 states have call predecessors, (7447), 945 states have return successors, (7447), 7327 states have call predecessors, (7447), 7447 states have call successors, (7447) [2024-12-02 13:29:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52655 states to 52655 states and 83608 transitions. [2024-12-02 13:29:00,818 INFO L78 Accepts]: Start accepts. Automaton has 52655 states and 83608 transitions. Word has length 537 [2024-12-02 13:29:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:29:00,818 INFO L471 AbstractCegarLoop]: Abstraction has 52655 states and 83608 transitions. [2024-12-02 13:29:00,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:29:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 52655 states and 83608 transitions. [2024-12-02 13:29:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2024-12-02 13:29:00,828 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:29:00,829 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:29:00,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 13:29:00,829 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:29:00,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:29:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2060486486, now seen corresponding path program 1 times [2024-12-02 13:29:00,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:29:00,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810170271] [2024-12-02 13:29:00,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:29:00,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:29:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:29:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:29:01,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:29:01,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810170271] [2024-12-02 13:29:01,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810170271] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:29:01,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:29:01,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:29:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67933137] [2024-12-02 13:29:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:29:01,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:29:01,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:29:01,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:29:01,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:29:01,419 INFO L87 Difference]: Start difference. First operand 52655 states and 83608 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:29:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:29:05,994 INFO L93 Difference]: Finished difference Result 100719 states and 162222 transitions. [2024-12-02 13:29:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:29:05,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 537 [2024-12-02 13:29:05,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:29:06,100 INFO L225 Difference]: With dead ends: 100719 [2024-12-02 13:29:06,100 INFO L226 Difference]: Without dead ends: 68351 [2024-12-02 13:29:06,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:29:06,132 INFO L435 NwaCegarLoop]: 447 mSDtfsCounter, 392 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:29:06,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1263 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:29:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68351 states. [2024-12-02 13:29:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68351 to 58249. [2024-12-02 13:29:10,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58249 states, 49856 states have (on average 1.57216784338896) internal successors, (78382), 49976 states have internal predecessors, (78382), 7447 states have call successors, (7447), 945 states have call predecessors, (7447), 945 states have return successors, (7447), 7327 states have call predecessors, (7447), 7447 states have call successors, (7447) [2024-12-02 13:29:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58249 states to 58249 states and 93276 transitions. [2024-12-02 13:29:10,636 INFO L78 Accepts]: Start accepts. Automaton has 58249 states and 93276 transitions. Word has length 537 [2024-12-02 13:29:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:29:10,637 INFO L471 AbstractCegarLoop]: Abstraction has 58249 states and 93276 transitions. [2024-12-02 13:29:10,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:29:10,637 INFO L276 IsEmpty]: Start isEmpty. Operand 58249 states and 93276 transitions. [2024-12-02 13:29:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-12-02 13:29:10,646 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:29:10,646 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:29:10,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 13:29:10,646 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:29:10,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:29:10,647 INFO L85 PathProgramCache]: Analyzing trace with hash 948326166, now seen corresponding path program 1 times [2024-12-02 13:29:10,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:29:10,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083330700] [2024-12-02 13:29:10,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:29:10,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:29:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:29:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:29:15,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:29:15,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083330700] [2024-12-02 13:29:15,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083330700] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:29:15,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:29:15,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 13:29:15,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017432792] [2024-12-02 13:29:15,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:29:15,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:29:15,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:29:15,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:29:15,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:29:15,429 INFO L87 Difference]: Start difference. First operand 58249 states and 93276 transitions. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 3 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2024-12-02 13:29:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:29:45,051 INFO L93 Difference]: Finished difference Result 215009 states and 341895 transitions. [2024-12-02 13:29:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:29:45,052 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 3 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 538 [2024-12-02 13:29:45,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:29:45,324 INFO L225 Difference]: With dead ends: 215009 [2024-12-02 13:29:45,324 INFO L226 Difference]: Without dead ends: 164839 [2024-12-02 13:29:45,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2024-12-02 13:29:45,414 INFO L435 NwaCegarLoop]: 787 mSDtfsCounter, 4552 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 1672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4552 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 3260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1672 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:29:45,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4552 Valid, 2533 Invalid, 3260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1672 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-12-02 13:29:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164839 states. [2024-12-02 13:29:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164839 to 89101. [2024-12-02 13:29:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89101 states, 76675 states have (on average 1.5715291816106944) internal successors, (120497), 76891 states have internal predecessors, (120497), 10903 states have call successors, (10903), 1522 states have call predecessors, (10903), 1522 states have return successors, (10903), 10687 states have call predecessors, (10903), 10903 states have call successors, (10903) [2024-12-02 13:29:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89101 states to 89101 states and 142303 transitions. [2024-12-02 13:29:55,486 INFO L78 Accepts]: Start accepts. Automaton has 89101 states and 142303 transitions. Word has length 538 [2024-12-02 13:29:55,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:29:55,486 INFO L471 AbstractCegarLoop]: Abstraction has 89101 states and 142303 transitions. [2024-12-02 13:29:55,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 3 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2024-12-02 13:29:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 89101 states and 142303 transitions. [2024-12-02 13:29:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-12-02 13:29:55,501 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:29:55,502 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:29:55,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 13:29:55,502 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:29:55,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:29:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1269304232, now seen corresponding path program 1 times [2024-12-02 13:29:55,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:29:55,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235251427] [2024-12-02 13:29:55,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:29:55,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:29:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:29:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:29:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:29:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235251427] [2024-12-02 13:29:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235251427] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:29:56,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:29:56,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:29:56,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691954806] [2024-12-02 13:29:56,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:29:56,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:29:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:29:56,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:29:56,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:29:56,197 INFO L87 Difference]: Start difference. First operand 89101 states and 142303 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2024-12-02 13:30:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:30:26,836 INFO L93 Difference]: Finished difference Result 325369 states and 514597 transitions. [2024-12-02 13:30:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 13:30:26,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 538 [2024-12-02 13:30:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:30:27,274 INFO L225 Difference]: With dead ends: 325369 [2024-12-02 13:30:27,275 INFO L226 Difference]: Without dead ends: 249423 [2024-12-02 13:30:27,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:30:27,407 INFO L435 NwaCegarLoop]: 551 mSDtfsCounter, 2279 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 839 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 839 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:30:27,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2279 Valid, 1887 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [839 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 13:30:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249423 states. [2024-12-02 13:30:39,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249423 to 93231. [2024-12-02 13:30:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93231 states, 80805 states have (on average 1.5781820431903966) internal successors, (127525), 81021 states have internal predecessors, (127525), 10903 states have call successors, (10903), 1522 states have call predecessors, (10903), 1522 states have return successors, (10903), 10687 states have call predecessors, (10903), 10903 states have call successors, (10903) [2024-12-02 13:30:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93231 states to 93231 states and 149331 transitions. [2024-12-02 13:30:39,385 INFO L78 Accepts]: Start accepts. Automaton has 93231 states and 149331 transitions. Word has length 538 [2024-12-02 13:30:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:30:39,385 INFO L471 AbstractCegarLoop]: Abstraction has 93231 states and 149331 transitions. [2024-12-02 13:30:39,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 2 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2024-12-02 13:30:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 93231 states and 149331 transitions. [2024-12-02 13:30:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-12-02 13:30:39,401 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:30:39,401 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:30:39,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 13:30:39,401 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:30:39,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:30:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash 576062934, now seen corresponding path program 1 times [2024-12-02 13:30:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:30:39,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576287802] [2024-12-02 13:30:39,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:30:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:30:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:30:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:30:39,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:30:39,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576287802] [2024-12-02 13:30:39,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576287802] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:30:39,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:30:39,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:30:39,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203938202] [2024-12-02 13:30:39,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:30:39,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:30:39,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:30:39,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:30:39,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:30:39,872 INFO L87 Difference]: Start difference. First operand 93231 states and 149331 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:31:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:00,281 INFO L93 Difference]: Finished difference Result 213561 states and 340338 transitions. [2024-12-02 13:31:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:31:00,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 538 [2024-12-02 13:31:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:00,516 INFO L225 Difference]: With dead ends: 213561 [2024-12-02 13:31:00,516 INFO L226 Difference]: Without dead ends: 134707 [2024-12-02 13:31:00,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:31:00,604 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 935 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:00,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 1503 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 13:31:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134707 states. [2024-12-02 13:31:14,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134707 to 100629. [2024-12-02 13:31:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100629 states, 88202 states have (on average 1.585950431962994) internal successors, (139884), 88418 states have internal predecessors, (139884), 10903 states have call successors, (10903), 1523 states have call predecessors, (10903), 1523 states have return successors, (10903), 10687 states have call predecessors, (10903), 10903 states have call successors, (10903) [2024-12-02 13:31:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100629 states to 100629 states and 161690 transitions. [2024-12-02 13:31:14,612 INFO L78 Accepts]: Start accepts. Automaton has 100629 states and 161690 transitions. Word has length 538 [2024-12-02 13:31:14,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:31:14,613 INFO L471 AbstractCegarLoop]: Abstraction has 100629 states and 161690 transitions. [2024-12-02 13:31:14,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:31:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 100629 states and 161690 transitions. [2024-12-02 13:31:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-12-02 13:31:14,713 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:31:14,713 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:31:14,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 13:31:14,714 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:31:14,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:31:14,715 INFO L85 PathProgramCache]: Analyzing trace with hash -845657510, now seen corresponding path program 1 times [2024-12-02 13:31:14,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:31:14,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587769584] [2024-12-02 13:31:14,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:31:14,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:31:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:31:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2024-12-02 13:31:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:31:19,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587769584] [2024-12-02 13:31:19,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587769584] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:31:19,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:31:19,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 13:31:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943548337] [2024-12-02 13:31:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:31:19,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:31:19,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:31:19,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:31:19,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:31:19,543 INFO L87 Difference]: Start difference. First operand 100629 states and 161690 transitions. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:31:53,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:31:53,441 INFO L93 Difference]: Finished difference Result 273911 states and 435195 transitions. [2024-12-02 13:31:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 13:31:53,442 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 538 [2024-12-02 13:31:53,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:31:54,294 INFO L225 Difference]: With dead ends: 273911 [2024-12-02 13:31:54,294 INFO L226 Difference]: Without dead ends: 186669 [2024-12-02 13:31:54,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:31:54,497 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 2548 mSDsluCounter, 3417 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2548 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:31:54,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2548 Valid, 3967 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1000 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 13:31:54,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186669 states. [2024-12-02 13:32:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186669 to 117475. [2024-12-02 13:32:09,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117475 states, 104951 states have (on average 1.5917809263370526) internal successors, (167059), 105167 states have internal predecessors, (167059), 10903 states have call successors, (10903), 1620 states have call predecessors, (10903), 1620 states have return successors, (10903), 10687 states have call predecessors, (10903), 10903 states have call successors, (10903) [2024-12-02 13:32:09,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117475 states to 117475 states and 188865 transitions. [2024-12-02 13:32:09,927 INFO L78 Accepts]: Start accepts. Automaton has 117475 states and 188865 transitions. Word has length 538 [2024-12-02 13:32:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:32:09,928 INFO L471 AbstractCegarLoop]: Abstraction has 117475 states and 188865 transitions. [2024-12-02 13:32:09,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2024-12-02 13:32:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 117475 states and 188865 transitions. [2024-12-02 13:32:10,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-12-02 13:32:10,001 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:32:10,002 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:32:10,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 13:32:10,003 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:32:10,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:32:10,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1860961884, now seen corresponding path program 1 times [2024-12-02 13:32:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:32:10,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20585983] [2024-12-02 13:32:10,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:10,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:32:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 216 proven. 18 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-12-02 13:32:12,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:32:12,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20585983] [2024-12-02 13:32:12,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20585983] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:32:12,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516349843] [2024-12-02 13:32:12,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:32:12,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:32:12,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:32:12,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:32:12,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:32:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:32:13,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 13:32:13,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:32:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5370 proven. 72 refuted. 0 times theorem prover too weak. 6882 trivial. 0 not checked. [2024-12-02 13:32:14,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:32:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-12-02 13:32:15,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516349843] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:32:15,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:32:15,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-12-02 13:32:15,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928294339] [2024-12-02 13:32:15,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:32:15,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:32:15,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:32:15,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:32:15,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:32:15,280 INFO L87 Difference]: Start difference. First operand 117475 states and 188865 transitions. Second operand has 12 states, 12 states have (on average 23.583333333333332) internal successors, (283), 12 states have internal predecessors, (283), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2024-12-02 13:32:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:32:54,929 INFO L93 Difference]: Finished difference Result 317675 states and 500784 transitions. [2024-12-02 13:32:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 13:32:54,930 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 23.583333333333332) internal successors, (283), 12 states have internal predecessors, (283), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) Word has length 538 [2024-12-02 13:32:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:32:55,655 INFO L225 Difference]: With dead ends: 317675 [2024-12-02 13:32:55,655 INFO L226 Difference]: Without dead ends: 214221 [2024-12-02 13:32:55,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1111 GetRequests, 1076 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=370, Invalid=890, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 13:32:55,894 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 1163 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:32:55,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1789 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 13:32:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214221 states. [2024-12-02 13:33:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214221 to 154613. [2024-12-02 13:33:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154613 states, 136279 states have (on average 1.5617740077341336) internal successors, (212837), 136615 states have internal predecessors, (212837), 15799 states have call successors, (15799), 2534 states have call predecessors, (15799), 2534 states have return successors, (15799), 15463 states have call predecessors, (15799), 15799 states have call successors, (15799) [2024-12-02 13:33:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154613 states to 154613 states and 244435 transitions. [2024-12-02 13:33:18,838 INFO L78 Accepts]: Start accepts. Automaton has 154613 states and 244435 transitions. Word has length 538 [2024-12-02 13:33:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:33:18,839 INFO L471 AbstractCegarLoop]: Abstraction has 154613 states and 244435 transitions. [2024-12-02 13:33:18,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.583333333333332) internal successors, (283), 12 states have internal predecessors, (283), 3 states have call successors, (127), 2 states have call predecessors, (127), 4 states have return successors, (129), 3 states have call predecessors, (129), 3 states have call successors, (129) [2024-12-02 13:33:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 154613 states and 244435 transitions. [2024-12-02 13:33:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-12-02 13:33:18,899 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:33:18,899 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:33:18,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:33:19,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 13:33:19,100 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:33:19,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:33:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1052281548, now seen corresponding path program 1 times [2024-12-02 13:33:19,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:33:19,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887235859] [2024-12-02 13:33:19,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:33:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:33:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:33:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 99 proven. 135 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2024-12-02 13:33:21,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:33:21,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887235859] [2024-12-02 13:33:21,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887235859] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:33:21,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933248221] [2024-12-02 13:33:21,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:33:21,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:33:21,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:33:21,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:33:21,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:33:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:33:21,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 13:33:21,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:33:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6084 proven. 135 refuted. 0 times theorem prover too weak. 6105 trivial. 0 not checked. [2024-12-02 13:33:22,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:33:26,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933248221] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:33:26,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:33:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 16 [2024-12-02 13:33:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156977815] [2024-12-02 13:33:26,888 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:33:26,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 13:33:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:33:26,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 13:33:26,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2024-12-02 13:33:26,891 INFO L87 Difference]: Start difference. First operand 154613 states and 244435 transitions. Second operand has 16 states, 16 states have (on average 13.25) internal successors, (212), 16 states have internal predecessors, (212), 2 states have call successors, (124), 2 states have call predecessors, (124), 3 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2024-12-02 13:34:07,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:34:07,216 INFO L93 Difference]: Finished difference Result 363989 states and 569400 transitions. [2024-12-02 13:34:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 13:34:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.25) internal successors, (212), 16 states have internal predecessors, (212), 2 states have call successors, (124), 2 states have call predecessors, (124), 3 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) Word has length 538 [2024-12-02 13:34:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:34:07,612 INFO L225 Difference]: With dead ends: 363989 [2024-12-02 13:34:07,613 INFO L226 Difference]: Without dead ends: 237415 [2024-12-02 13:34:07,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 624 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 13:34:07,780 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 1612 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 3753 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:34:07,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 3753 Invalid, 2679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 13:34:07,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237415 states. [2024-12-02 13:34:30,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237415 to 176763. [2024-12-02 13:34:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176763 states, 158068 states have (on average 1.5658577321152922) internal successors, (247512), 158404 states have internal predecessors, (247512), 15799 states have call successors, (15799), 2895 states have call predecessors, (15799), 2895 states have return successors, (15799), 15463 states have call predecessors, (15799), 15799 states have call successors, (15799) [2024-12-02 13:34:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176763 states to 176763 states and 279110 transitions. [2024-12-02 13:34:31,146 INFO L78 Accepts]: Start accepts. Automaton has 176763 states and 279110 transitions. Word has length 538 [2024-12-02 13:34:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:34:31,147 INFO L471 AbstractCegarLoop]: Abstraction has 176763 states and 279110 transitions. [2024-12-02 13:34:31,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.25) internal successors, (212), 16 states have internal predecessors, (212), 2 states have call successors, (124), 2 states have call predecessors, (124), 3 states have return successors, (124), 2 states have call predecessors, (124), 2 states have call successors, (124) [2024-12-02 13:34:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 176763 states and 279110 transitions. [2024-12-02 13:34:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2024-12-02 13:34:31,179 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:34:31,179 INFO L218 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:34:31,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 13:34:31,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_572acdad-e7ca-488c-b2d7-0bdbd004e20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 13:34:31,380 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:34:31,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:34:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash -536066354, now seen corresponding path program 1 times [2024-12-02 13:34:31,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:34:31,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724021852] [2024-12-02 13:34:31,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:34:31,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:34:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat