./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 56ab96e739c021e0a820f09f7d8df07ac4eb08fdb70334870660d3f078d5cedf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:35:10,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:35:10,273 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:35:10,279 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:35:10,280 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:35:10,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:35:10,308 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:35:10,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:35:10,309 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:35:10,309 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:35:10,309 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:35:10,309 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:35:10,310 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:35:10,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:35:10,310 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:35:10,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:35:10,311 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:35:10,311 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:35:10,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:35:10,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:35:10,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:35:10,311 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:35:10,311 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:35:10,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:35:10,312 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:35:10,312 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:35:10,312 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:35:10,312 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:35:10,312 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:35:10,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:10,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:10,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:10,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:10,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:35:10,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:10,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:10,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:35:10,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:35:10,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:35:10,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:35:10,315 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_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ab96e739c021e0a820f09f7d8df07ac4eb08fdb70334870660d3f078d5cedf [2024-11-23 22:35:10,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:35:10,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:35:10,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:35:10,670 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:35:10,671 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:35:10,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2024-11-23 22:35:14,111 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/data/daf73c3f0/f23aa492f6304dd68d05322aeba76399/FLAG3ee76b3b3 [2024-11-23 22:35:14,470 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:35:14,471 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2024-11-23 22:35:14,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/data/daf73c3f0/f23aa492f6304dd68d05322aeba76399/FLAG3ee76b3b3 [2024-11-23 22:35:14,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/data/daf73c3f0/f23aa492f6304dd68d05322aeba76399 [2024-11-23 22:35:14,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:35:14,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:35:14,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:14,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:35:14,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:35:14,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:14" (1/1) ... [2024-11-23 22:35:14,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d65f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:14, skipping insertion in model container [2024-11-23 22:35:14,543 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:14" (1/1) ... [2024-11-23 22:35:14,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:35:14,796 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_d412016d-2dda-4f6f-8967-16a7d2bae511/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i[915,928] [2024-11-23 22:35:14,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:14,977 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:35:14,995 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_d412016d-2dda-4f6f-8967-16a7d2bae511/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-34.i[915,928] [2024-11-23 22:35:15,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:15,099 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:35:15,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15 WrapperNode [2024-11-23 22:35:15,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:15,104 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:15,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:35:15,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:35:15,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,186 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 265 [2024-11-23 22:35:15,186 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:15,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:35:15,187 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:35:15,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:35:15,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,256 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 22:35:15,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,271 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:35:15,294 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:35:15,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:35:15,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:35:15,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (1/1) ... [2024-11-23 22:35:15,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:15,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:15,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:35:15,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:35:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:35:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:35:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:35:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:35:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:35:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:35:15,537 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:35:15,539 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:35:16,248 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-23 22:35:16,248 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:35:16,270 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:35:16,272 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:35:16,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:16 BoogieIcfgContainer [2024-11-23 22:35:16,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:35:16,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:35:16,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:35:16,283 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:35:16,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:35:14" (1/3) ... [2024-11-23 22:35:16,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e53a511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:16, skipping insertion in model container [2024-11-23 22:35:16,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:15" (2/3) ... [2024-11-23 22:35:16,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e53a511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:16, skipping insertion in model container [2024-11-23 22:35:16,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:16" (3/3) ... [2024-11-23 22:35:16,290 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-34.i [2024-11-23 22:35:16,311 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:35:16,315 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-34.i that has 2 procedures, 112 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:35:16,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:35:16,421 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;@23a0efee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:35:16,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:35:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 77 states have internal predecessors, (112), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-23 22:35:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-23 22:35:16,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:16,456 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:16,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:16,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1917208317, now seen corresponding path program 1 times [2024-11-23 22:35:16,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247008185] [2024-11-23 22:35:16,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:16,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-23 22:35:17,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:17,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247008185] [2024-11-23 22:35:17,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247008185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:35:17,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039371767] [2024-11-23 22:35:17,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:17,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:35:17,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:17,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:35:17,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:35:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:17,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:35:17,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:35:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-23 22:35:17,463 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:35:17,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039371767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:17,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:35:17,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:35:17,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133283376] [2024-11-23 22:35:17,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:17,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:35:17,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:17,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:35:17,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:35:17,508 INFO L87 Difference]: Start difference. First operand has 112 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 77 states have internal predecessors, (112), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:35:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:17,599 INFO L93 Difference]: Finished difference Result 217 states and 383 transitions. [2024-11-23 22:35:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:35:17,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 212 [2024-11-23 22:35:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:17,615 INFO L225 Difference]: With dead ends: 217 [2024-11-23 22:35:17,617 INFO L226 Difference]: Without dead ends: 108 [2024-11-23 22:35:17,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:35:17,625 INFO L435 NwaCegarLoop]: 171 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, 171 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:17,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:35:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-23 22:35:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-23 22:35:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-23 22:35:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 171 transitions. [2024-11-23 22:35:17,685 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 171 transitions. Word has length 212 [2024-11-23 22:35:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:17,685 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 171 transitions. [2024-11-23 22:35:17,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:35:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 171 transitions. [2024-11-23 22:35:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-23 22:35:17,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:17,695 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:17,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:35:17,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:35:17,897 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:17,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:17,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1111651081, now seen corresponding path program 1 times [2024-11-23 22:35:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:17,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004279826] [2024-11-23 22:35:17,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:17,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:18,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:18,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004279826] [2024-11-23 22:35:18,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004279826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:18,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:18,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:35:18,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268967663] [2024-11-23 22:35:18,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:18,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:18,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:18,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:35:18,991 INFO L87 Difference]: Start difference. First operand 108 states and 171 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:19,430 INFO L93 Difference]: Finished difference Result 348 states and 552 transitions. [2024-11-23 22:35:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:19,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2024-11-23 22:35:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:19,437 INFO L225 Difference]: With dead ends: 348 [2024-11-23 22:35:19,440 INFO L226 Difference]: Without dead ends: 243 [2024-11-23 22:35:19,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:19,444 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 171 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:19,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 531 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:35:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-23 22:35:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 213. [2024-11-23 22:35:19,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 144 states have (on average 1.4375) internal successors, (207), 144 states have internal predecessors, (207), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-23 22:35:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 339 transitions. [2024-11-23 22:35:19,541 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 339 transitions. Word has length 212 [2024-11-23 22:35:19,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:19,545 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 339 transitions. [2024-11-23 22:35:19,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 339 transitions. [2024-11-23 22:35:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-11-23 22:35:19,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:19,558 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:19,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:35:19,559 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:19,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:19,560 INFO L85 PathProgramCache]: Analyzing trace with hash -961702031, now seen corresponding path program 1 times [2024-11-23 22:35:19,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:19,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624722453] [2024-11-23 22:35:19,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:19,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:20,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624722453] [2024-11-23 22:35:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624722453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:20,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:20,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:35:20,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436039892] [2024-11-23 22:35:20,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:20,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:35:20,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:20,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:35:20,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:20,159 INFO L87 Difference]: Start difference. First operand 213 states and 339 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:20,717 INFO L93 Difference]: Finished difference Result 628 states and 1000 transitions. [2024-11-23 22:35:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:35:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2024-11-23 22:35:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:20,725 INFO L225 Difference]: With dead ends: 628 [2024-11-23 22:35:20,725 INFO L226 Difference]: Without dead ends: 418 [2024-11-23 22:35:20,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:35:20,732 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 197 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:20,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 625 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:35:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-23 22:35:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 217. [2024-11-23 22:35:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 148 states have (on average 1.4256756756756757) internal successors, (211), 148 states have internal predecessors, (211), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-23 22:35:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2024-11-23 22:35:20,809 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 213 [2024-11-23 22:35:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:20,810 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2024-11-23 22:35:20,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2024-11-23 22:35:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-23 22:35:20,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:20,817 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:20,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:35:20,818 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:20,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:20,818 INFO L85 PathProgramCache]: Analyzing trace with hash 341696479, now seen corresponding path program 1 times [2024-11-23 22:35:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:20,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994893720] [2024-11-23 22:35:20,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:20,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:29,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994893720] [2024-11-23 22:35:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994893720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:29,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:29,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:35:29,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68226720] [2024-11-23 22:35:29,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:29,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:35:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:29,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:35:29,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:35:29,958 INFO L87 Difference]: Start difference. First operand 217 states and 343 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:35,451 INFO L93 Difference]: Finished difference Result 795 states and 1226 transitions. [2024-11-23 22:35:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:35:35,452 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-23 22:35:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:35,456 INFO L225 Difference]: With dead ends: 795 [2024-11-23 22:35:35,457 INFO L226 Difference]: Without dead ends: 581 [2024-11-23 22:35:35,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:35:35,459 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 853 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:35,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 920 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 22:35:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-23 22:35:35,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 445. [2024-11-23 22:35:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 301 states have (on average 1.4053156146179402) internal successors, (423), 302 states have internal predecessors, (423), 137 states have call successors, (137), 6 states have call predecessors, (137), 6 states have return successors, (137), 136 states have call predecessors, (137), 137 states have call successors, (137) [2024-11-23 22:35:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 697 transitions. [2024-11-23 22:35:35,548 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 697 transitions. Word has length 214 [2024-11-23 22:35:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:35,549 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 697 transitions. [2024-11-23 22:35:35,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 697 transitions. [2024-11-23 22:35:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-23 22:35:35,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:35,553 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:35,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:35:35,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:35,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2116703841, now seen corresponding path program 1 times [2024-11-23 22:35:35,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:35,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695597963] [2024-11-23 22:35:35,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:39,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:39,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695597963] [2024-11-23 22:35:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695597963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:39,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:39,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:35:39,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349869750] [2024-11-23 22:35:39,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:39,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:35:39,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:39,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:35:39,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:35:39,873 INFO L87 Difference]: Start difference. First operand 445 states and 697 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:42,063 INFO L93 Difference]: Finished difference Result 1272 states and 1960 transitions. [2024-11-23 22:35:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:35:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-23 22:35:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:42,076 INFO L225 Difference]: With dead ends: 1272 [2024-11-23 22:35:42,076 INFO L226 Difference]: Without dead ends: 838 [2024-11-23 22:35:42,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:35:42,080 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 437 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:42,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 673 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 22:35:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-23 22:35:42,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 554. [2024-11-23 22:35:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 381 states have (on average 1.4094488188976377) internal successors, (537), 381 states have internal predecessors, (537), 165 states have call successors, (165), 7 states have call predecessors, (165), 7 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:35:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 867 transitions. [2024-11-23 22:35:42,186 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 867 transitions. Word has length 214 [2024-11-23 22:35:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:42,187 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 867 transitions. [2024-11-23 22:35:42,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 867 transitions. [2024-11-23 22:35:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-23 22:35:42,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:42,192 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:42,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:35:42,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:42,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:42,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1021754849, now seen corresponding path program 1 times [2024-11-23 22:35:42,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:42,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066305016] [2024-11-23 22:35:42,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:42,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:46,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066305016] [2024-11-23 22:35:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066305016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:46,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:35:46,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550657302] [2024-11-23 22:35:46,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:46,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:35:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:46,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:35:46,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:35:46,043 INFO L87 Difference]: Start difference. First operand 554 states and 867 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:48,520 INFO L93 Difference]: Finished difference Result 1324 states and 2025 transitions. [2024-11-23 22:35:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:35:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-23 22:35:48,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:48,528 INFO L225 Difference]: With dead ends: 1324 [2024-11-23 22:35:48,529 INFO L226 Difference]: Without dead ends: 847 [2024-11-23 22:35:48,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:35:48,532 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 373 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:48,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 677 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 22:35:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-23 22:35:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 707. [2024-11-23 22:35:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 534 states have (on average 1.4250936329588015) internal successors, (761), 534 states have internal predecessors, (761), 165 states have call successors, (165), 7 states have call predecessors, (165), 7 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:35:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1091 transitions. [2024-11-23 22:35:48,662 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1091 transitions. Word has length 214 [2024-11-23 22:35:48,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:48,665 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1091 transitions. [2024-11-23 22:35:48,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1091 transitions. [2024-11-23 22:35:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-23 22:35:48,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:48,670 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:48,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:35:48,671 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:48,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash -928436592, now seen corresponding path program 1 times [2024-11-23 22:35:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:48,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512650168] [2024-11-23 22:35:48,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:48,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:50,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512650168] [2024-11-23 22:35:50,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512650168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:50,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:50,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:35:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202513138] [2024-11-23 22:35:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:50,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:35:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:50,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:35:50,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:35:50,738 INFO L87 Difference]: Start difference. First operand 707 states and 1091 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:51,746 INFO L93 Difference]: Finished difference Result 1143 states and 1743 transitions. [2024-11-23 22:35:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:35:51,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-23 22:35:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:51,755 INFO L225 Difference]: With dead ends: 1143 [2024-11-23 22:35:51,755 INFO L226 Difference]: Without dead ends: 883 [2024-11-23 22:35:51,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:35:51,758 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 214 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:51,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 615 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:35:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-23 22:35:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 713. [2024-11-23 22:35:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 540 states have (on average 1.4166666666666667) internal successors, (765), 540 states have internal predecessors, (765), 165 states have call successors, (165), 7 states have call predecessors, (165), 7 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:35:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1095 transitions. [2024-11-23 22:35:51,879 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1095 transitions. Word has length 214 [2024-11-23 22:35:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:51,880 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1095 transitions. [2024-11-23 22:35:51,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1095 transitions. [2024-11-23 22:35:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-23 22:35:51,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:51,885 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:51,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:35:51,885 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:51,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1105586591, now seen corresponding path program 1 times [2024-11-23 22:35:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:51,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626181783] [2024-11-23 22:35:51,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:51,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:52,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:52,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626181783] [2024-11-23 22:35:52,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626181783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:52,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:52,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:35:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27302981] [2024-11-23 22:35:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:52,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:35:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:52,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:35:52,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:35:52,793 INFO L87 Difference]: Start difference. First operand 713 states and 1095 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:54,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:54,121 INFO L93 Difference]: Finished difference Result 1451 states and 2207 transitions. [2024-11-23 22:35:54,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:35:54,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-23 22:35:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:54,130 INFO L225 Difference]: With dead ends: 1451 [2024-11-23 22:35:54,130 INFO L226 Difference]: Without dead ends: 985 [2024-11-23 22:35:54,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:35:54,134 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 310 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:54,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 689 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:35:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-11-23 22:35:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 711. [2024-11-23 22:35:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 538 states have (on average 1.4144981412639406) internal successors, (761), 538 states have internal predecessors, (761), 165 states have call successors, (165), 7 states have call predecessors, (165), 7 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:35:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1091 transitions. [2024-11-23 22:35:54,293 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1091 transitions. Word has length 214 [2024-11-23 22:35:54,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:54,294 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1091 transitions. [2024-11-23 22:35:54,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1091 transitions. [2024-11-23 22:35:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-23 22:35:54,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:54,300 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:54,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:35:54,302 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:54,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:54,303 INFO L85 PathProgramCache]: Analyzing trace with hash 10637599, now seen corresponding path program 1 times [2024-11-23 22:35:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189876831] [2024-11-23 22:35:54,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:54,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:54,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189876831] [2024-11-23 22:35:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189876831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:54,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:54,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:35:54,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115470581] [2024-11-23 22:35:54,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:54,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:54,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:54,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:54,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:35:54,929 INFO L87 Difference]: Start difference. First operand 711 states and 1091 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:35:55,475 INFO L93 Difference]: Finished difference Result 1295 states and 1977 transitions. [2024-11-23 22:35:55,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:55,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2024-11-23 22:35:55,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:35:55,481 INFO L225 Difference]: With dead ends: 1295 [2024-11-23 22:35:55,481 INFO L226 Difference]: Without dead ends: 725 [2024-11-23 22:35:55,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:35:55,486 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 123 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:35:55,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 440 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:35:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-23 22:35:55,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 671. [2024-11-23 22:35:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 498 states have (on average 1.391566265060241) internal successors, (693), 498 states have internal predecessors, (693), 165 states have call successors, (165), 7 states have call predecessors, (165), 7 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:35:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1023 transitions. [2024-11-23 22:35:55,631 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1023 transitions. Word has length 214 [2024-11-23 22:35:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:35:55,632 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1023 transitions. [2024-11-23 22:35:55,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:35:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1023 transitions. [2024-11-23 22:35:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-23 22:35:55,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:35:55,637 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:55,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:35:55,637 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:35:55,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1272110534, now seen corresponding path program 1 times [2024-11-23 22:35:55,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:55,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008240497] [2024-11-23 22:35:55,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:55,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:35:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:59,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008240497] [2024-11-23 22:35:59,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008240497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:59,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:59,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:35:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373794774] [2024-11-23 22:35:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:59,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:35:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:59,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:35:59,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:35:59,978 INFO L87 Difference]: Start difference. First operand 671 states and 1023 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:36:02,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:02,707 INFO L93 Difference]: Finished difference Result 1097 states and 1653 transitions. [2024-11-23 22:36:02,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:36:02,708 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2024-11-23 22:36:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:02,714 INFO L225 Difference]: With dead ends: 1097 [2024-11-23 22:36:02,714 INFO L226 Difference]: Without dead ends: 883 [2024-11-23 22:36:02,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:36:02,716 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 285 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:02,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 807 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:36:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2024-11-23 22:36:02,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 707. [2024-11-23 22:36:02,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 532 states have (on average 1.3740601503759398) internal successors, (731), 532 states have internal predecessors, (731), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:36:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1061 transitions. [2024-11-23 22:36:02,839 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1061 transitions. Word has length 215 [2024-11-23 22:36:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:02,840 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1061 transitions. [2024-11-23 22:36:02,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:36:02,841 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1061 transitions. [2024-11-23 22:36:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-23 22:36:02,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:02,843 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:02,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:36:02,844 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:02,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:02,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1117077052, now seen corresponding path program 1 times [2024-11-23 22:36:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:02,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140350216] [2024-11-23 22:36:02,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:36:08,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:08,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140350216] [2024-11-23 22:36:08,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140350216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:08,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:08,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:36:08,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301081229] [2024-11-23 22:36:08,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:08,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:36:08,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:08,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:36:08,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:36:08,950 INFO L87 Difference]: Start difference. First operand 707 states and 1061 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:36:13,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:13,440 INFO L93 Difference]: Finished difference Result 1502 states and 2243 transitions. [2024-11-23 22:36:13,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:36:13,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 215 [2024-11-23 22:36:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:13,448 INFO L225 Difference]: With dead ends: 1502 [2024-11-23 22:36:13,451 INFO L226 Difference]: Without dead ends: 978 [2024-11-23 22:36:13,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:36:13,454 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 424 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:13,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1282 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 22:36:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-23 22:36:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 774. [2024-11-23 22:36:13,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 599 states have (on average 1.3823038397328882) internal successors, (828), 599 states have internal predecessors, (828), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:36:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1158 transitions. [2024-11-23 22:36:13,552 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1158 transitions. Word has length 215 [2024-11-23 22:36:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:13,552 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 1158 transitions. [2024-11-23 22:36:13,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:36:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1158 transitions. [2024-11-23 22:36:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-23 22:36:13,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:13,555 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:13,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:36:13,556 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:13,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:13,557 INFO L85 PathProgramCache]: Analyzing trace with hash 870409258, now seen corresponding path program 1 times [2024-11-23 22:36:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:13,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662071285] [2024-11-23 22:36:13,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:13,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:36:20,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:20,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662071285] [2024-11-23 22:36:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662071285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:20,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:20,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:36:20,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318360924] [2024-11-23 22:36:20,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:20,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:36:20,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:20,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:36:20,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:36:20,951 INFO L87 Difference]: Start difference. First operand 774 states and 1158 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:36:25,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:25,867 INFO L93 Difference]: Finished difference Result 1244 states and 1849 transitions. [2024-11-23 22:36:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:36:25,868 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2024-11-23 22:36:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:25,872 INFO L225 Difference]: With dead ends: 1244 [2024-11-23 22:36:25,872 INFO L226 Difference]: Without dead ends: 1014 [2024-11-23 22:36:25,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:36:25,874 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 383 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:25,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 933 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 22:36:25,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-23 22:36:26,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 766. [2024-11-23 22:36:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 591 states have (on average 1.3840947546531304) internal successors, (818), 591 states have internal predecessors, (818), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:36:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1148 transitions. [2024-11-23 22:36:26,049 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1148 transitions. Word has length 216 [2024-11-23 22:36:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:26,050 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 1148 transitions. [2024-11-23 22:36:26,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:36:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1148 transitions. [2024-11-23 22:36:26,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-23 22:36:26,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:26,054 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:26,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:36:26,054 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:26,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:26,055 INFO L85 PathProgramCache]: Analyzing trace with hash -354425634, now seen corresponding path program 1 times [2024-11-23 22:36:26,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720440925] [2024-11-23 22:36:26,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:26,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:36:31,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:31,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720440925] [2024-11-23 22:36:31,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720440925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:31,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:31,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:36:31,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448196499] [2024-11-23 22:36:31,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:31,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:36:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:31,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:36:31,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:36:31,821 INFO L87 Difference]: Start difference. First operand 766 states and 1148 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:36:36,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:36,933 INFO L93 Difference]: Finished difference Result 1567 states and 2338 transitions. [2024-11-23 22:36:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 22:36:36,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2024-11-23 22:36:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:36,938 INFO L225 Difference]: With dead ends: 1567 [2024-11-23 22:36:36,939 INFO L226 Difference]: Without dead ends: 1051 [2024-11-23 22:36:36,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:36:36,941 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 492 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:36,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 690 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:36:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-11-23 22:36:37,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 772. [2024-11-23 22:36:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 597 states have (on average 1.3869346733668342) internal successors, (828), 597 states have internal predecessors, (828), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:36:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1158 transitions. [2024-11-23 22:36:37,081 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1158 transitions. Word has length 216 [2024-11-23 22:36:37,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:37,083 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 1158 transitions. [2024-11-23 22:36:37,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:36:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1158 transitions. [2024-11-23 22:36:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-23 22:36:37,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:37,086 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:37,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:36:37,086 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:37,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1449374626, now seen corresponding path program 1 times [2024-11-23 22:36:37,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:37,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765308427] [2024-11-23 22:36:37,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:37,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:36:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:36:42,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:36:42,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765308427] [2024-11-23 22:36:42,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765308427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:36:42,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:36:42,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:36:42,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206806595] [2024-11-23 22:36:42,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:36:42,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:36:42,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:36:42,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:36:42,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:36:42,375 INFO L87 Difference]: Start difference. First operand 772 states and 1158 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:36:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:36:51,675 INFO L93 Difference]: Finished difference Result 1725 states and 2544 transitions. [2024-11-23 22:36:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:36:51,676 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 216 [2024-11-23 22:36:51,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:36:51,682 INFO L225 Difference]: With dead ends: 1725 [2024-11-23 22:36:51,682 INFO L226 Difference]: Without dead ends: 1132 [2024-11-23 22:36:51,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:36:51,685 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 642 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:36:51,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1052 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 22:36:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2024-11-23 22:36:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 868. [2024-11-23 22:36:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 693 states have (on average 1.3823953823953823) internal successors, (958), 693 states have internal predecessors, (958), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:36:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1288 transitions. [2024-11-23 22:36:51,822 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1288 transitions. Word has length 216 [2024-11-23 22:36:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:36:51,823 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1288 transitions. [2024-11-23 22:36:51,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:36:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1288 transitions. [2024-11-23 22:36:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-23 22:36:51,826 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:36:51,826 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:36:51,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:36:51,826 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:36:51,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:36:51,827 INFO L85 PathProgramCache]: Analyzing trace with hash 325632736, now seen corresponding path program 1 times [2024-11-23 22:36:51,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:36:51,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249721801] [2024-11-23 22:36:51,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:36:51,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:36:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:37:08,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:08,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249721801] [2024-11-23 22:37:08,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249721801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:08,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:08,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 22:37:08,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099911298] [2024-11-23 22:37:08,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:08,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:37:08,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:08,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:37:08,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:37:08,277 INFO L87 Difference]: Start difference. First operand 868 states and 1288 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:37:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:13,065 INFO L93 Difference]: Finished difference Result 1488 states and 2206 transitions. [2024-11-23 22:37:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:37:13,066 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 216 [2024-11-23 22:37:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:13,071 INFO L225 Difference]: With dead ends: 1488 [2024-11-23 22:37:13,071 INFO L226 Difference]: Without dead ends: 962 [2024-11-23 22:37:13,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:37:13,073 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 495 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:13,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1038 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 22:37:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-23 22:37:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 864. [2024-11-23 22:37:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 689 states have (on average 1.3788098693759072) internal successors, (950), 689 states have internal predecessors, (950), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:37:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1280 transitions. [2024-11-23 22:37:13,277 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1280 transitions. Word has length 216 [2024-11-23 22:37:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:13,278 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 1280 transitions. [2024-11-23 22:37:13,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:37:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1280 transitions. [2024-11-23 22:37:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-23 22:37:13,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:13,281 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:13,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:37:13,282 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:13,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1391725280, now seen corresponding path program 1 times [2024-11-23 22:37:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:13,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999050352] [2024-11-23 22:37:13,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:13,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:37:39,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:37:39,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:37:39,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999050352] [2024-11-23 22:37:39,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999050352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:37:39,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:37:39,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:37:39,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241644595] [2024-11-23 22:37:39,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:37:39,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:37:39,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:37:39,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:37:39,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:37:39,738 INFO L87 Difference]: Start difference. First operand 864 states and 1280 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:37:41,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:37:41,768 INFO L93 Difference]: Finished difference Result 1224 states and 1748 transitions. [2024-11-23 22:37:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:37:41,769 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 217 [2024-11-23 22:37:41,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:37:41,775 INFO L225 Difference]: With dead ends: 1224 [2024-11-23 22:37:41,775 INFO L226 Difference]: Without dead ends: 1222 [2024-11-23 22:37:41,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2024-11-23 22:37:41,777 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 477 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:37:41,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1300 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:37:41,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2024-11-23 22:37:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 935. [2024-11-23 22:37:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 760 states have (on average 1.3736842105263158) internal successors, (1044), 760 states have internal predecessors, (1044), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:37:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1374 transitions. [2024-11-23 22:37:41,918 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1374 transitions. Word has length 217 [2024-11-23 22:37:41,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:37:41,918 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1374 transitions. [2024-11-23 22:37:41,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:37:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1374 transitions. [2024-11-23 22:37:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-23 22:37:41,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:37:41,921 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:37:41,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:37:41,922 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:37:41,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:37:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash 574076830, now seen corresponding path program 1 times [2024-11-23 22:37:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:37:41,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970701537] [2024-11-23 22:37:41,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:37:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:37:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:38:09,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:09,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970701537] [2024-11-23 22:38:09,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970701537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:09,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:09,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:38:09,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515745496] [2024-11-23 22:38:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:09,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:38:09,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:09,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:38:09,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:38:09,203 INFO L87 Difference]: Start difference. First operand 935 states and 1374 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:38:11,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:11,139 INFO L93 Difference]: Finished difference Result 1226 states and 1751 transitions. [2024-11-23 22:38:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:38:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 217 [2024-11-23 22:38:11,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:11,146 INFO L225 Difference]: With dead ends: 1226 [2024-11-23 22:38:11,146 INFO L226 Difference]: Without dead ends: 1224 [2024-11-23 22:38:11,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:38:11,147 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 397 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:11,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1266 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:38:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2024-11-23 22:38:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1002. [2024-11-23 22:38:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 827 states have (on average 1.3615477629987909) internal successors, (1126), 827 states have internal predecessors, (1126), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:38:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1456 transitions. [2024-11-23 22:38:11,262 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1456 transitions. Word has length 217 [2024-11-23 22:38:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:11,263 INFO L471 AbstractCegarLoop]: Abstraction has 1002 states and 1456 transitions. [2024-11-23 22:38:11,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:38:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1456 transitions. [2024-11-23 22:38:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-23 22:38:11,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:11,265 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:11,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:38:11,266 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:11,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1814427106, now seen corresponding path program 1 times [2024-11-23 22:38:11,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:11,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671930493] [2024-11-23 22:38:11,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:11,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:38:11,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:11,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671930493] [2024-11-23 22:38:11,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671930493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:11,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:11,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:38:11,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588375406] [2024-11-23 22:38:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:11,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:38:11,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:11,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:38:11,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:38:11,550 INFO L87 Difference]: Start difference. First operand 1002 states and 1456 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:38:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:11,836 INFO L93 Difference]: Finished difference Result 1772 states and 2583 transitions. [2024-11-23 22:38:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:38:11,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2024-11-23 22:38:11,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:11,843 INFO L225 Difference]: With dead ends: 1772 [2024-11-23 22:38:11,843 INFO L226 Difference]: Without dead ends: 1031 [2024-11-23 22:38:11,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:38:11,845 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 134 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:11,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 651 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:38:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2024-11-23 22:38:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 983. [2024-11-23 22:38:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 808 states have (on average 1.3613861386138615) internal successors, (1100), 808 states have internal predecessors, (1100), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:38:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1430 transitions. [2024-11-23 22:38:11,959 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1430 transitions. Word has length 217 [2024-11-23 22:38:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:11,960 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1430 transitions. [2024-11-23 22:38:11,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:38:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1430 transitions. [2024-11-23 22:38:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-23 22:38:11,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:11,962 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:11,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:38:11,963 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:11,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:11,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1334175801, now seen corresponding path program 1 times [2024-11-23 22:38:11,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:11,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867238338] [2024-11-23 22:38:11,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:11,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:38:22,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:22,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867238338] [2024-11-23 22:38:22,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867238338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:22,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:22,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:38:22,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233166596] [2024-11-23 22:38:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:22,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:38:22,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:22,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:38:22,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:38:22,966 INFO L87 Difference]: Start difference. First operand 983 states and 1430 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:38:26,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:26,244 INFO L93 Difference]: Finished difference Result 1777 states and 2566 transitions. [2024-11-23 22:38:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:38:26,245 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2024-11-23 22:38:26,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:26,250 INFO L225 Difference]: With dead ends: 1777 [2024-11-23 22:38:26,250 INFO L226 Difference]: Without dead ends: 1153 [2024-11-23 22:38:26,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:38:26,253 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 287 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:26,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1118 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 22:38:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-23 22:38:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 987. [2024-11-23 22:38:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 812 states have (on average 1.3509852216748768) internal successors, (1097), 812 states have internal predecessors, (1097), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:38:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1427 transitions. [2024-11-23 22:38:26,356 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1427 transitions. Word has length 217 [2024-11-23 22:38:26,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:26,356 INFO L471 AbstractCegarLoop]: Abstraction has 987 states and 1427 transitions. [2024-11-23 22:38:26,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:38:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1427 transitions. [2024-11-23 22:38:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-23 22:38:26,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:26,359 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:26,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:38:26,359 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:26,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:26,359 INFO L85 PathProgramCache]: Analyzing trace with hash -543451797, now seen corresponding path program 1 times [2024-11-23 22:38:26,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:26,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249835743] [2024-11-23 22:38:26,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:26,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:38:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:38:31,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:38:31,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249835743] [2024-11-23 22:38:31,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249835743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:38:31,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:38:31,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:38:31,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871199529] [2024-11-23 22:38:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:38:31,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:38:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:38:31,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:38:31,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:38:31,266 INFO L87 Difference]: Start difference. First operand 987 states and 1427 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:38:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:38:35,809 INFO L93 Difference]: Finished difference Result 1388 states and 2021 transitions. [2024-11-23 22:38:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:38:35,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 217 [2024-11-23 22:38:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:38:35,817 INFO L225 Difference]: With dead ends: 1388 [2024-11-23 22:38:35,817 INFO L226 Difference]: Without dead ends: 1152 [2024-11-23 22:38:35,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:38:35,819 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 280 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:38:35,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 863 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 22:38:35,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2024-11-23 22:38:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 997. [2024-11-23 22:38:35,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 822 states have (on average 1.3515815085158152) internal successors, (1111), 822 states have internal predecessors, (1111), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:38:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1441 transitions. [2024-11-23 22:38:35,959 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1441 transitions. Word has length 217 [2024-11-23 22:38:35,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:38:35,960 INFO L471 AbstractCegarLoop]: Abstraction has 997 states and 1441 transitions. [2024-11-23 22:38:35,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:38:35,961 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1441 transitions. [2024-11-23 22:38:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-23 22:38:35,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:38:35,963 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:38:35,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:38:35,963 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:38:35,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:38:35,964 INFO L85 PathProgramCache]: Analyzing trace with hash -362090599, now seen corresponding path program 1 times [2024-11-23 22:38:35,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:38:35,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922126019] [2024-11-23 22:38:35,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:38:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:38:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:39:12,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:39:12,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922126019] [2024-11-23 22:39:12,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922126019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:12,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:12,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:39:12,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498163675] [2024-11-23 22:39:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:12,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:39:12,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:39:12,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:39:12,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:39:12,137 INFO L87 Difference]: Start difference. First operand 997 states and 1441 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:39:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:15,564 INFO L93 Difference]: Finished difference Result 1174 states and 1640 transitions. [2024-11-23 22:39:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:39:15,564 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 218 [2024-11-23 22:39:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:15,570 INFO L225 Difference]: With dead ends: 1174 [2024-11-23 22:39:15,570 INFO L226 Difference]: Without dead ends: 1172 [2024-11-23 22:39:15,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-11-23 22:39:15,572 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 545 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:15,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1191 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:39:15,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-23 22:39:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1012. [2024-11-23 22:39:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 837 states have (on average 1.3488649940262845) internal successors, (1129), 837 states have internal predecessors, (1129), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:39:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1459 transitions. [2024-11-23 22:39:15,696 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1459 transitions. Word has length 218 [2024-11-23 22:39:15,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:15,697 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1459 transitions. [2024-11-23 22:39:15,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:39:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1459 transitions. [2024-11-23 22:39:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-23 22:39:15,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:15,700 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:15,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:39:15,700 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:15,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:15,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1373207849, now seen corresponding path program 1 times [2024-11-23 22:39:15,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:39:15,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479338390] [2024-11-23 22:39:15,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:15,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:39:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:39:15,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:39:15,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479338390] [2024-11-23 22:39:15,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479338390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:15,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:15,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:39:15,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390125479] [2024-11-23 22:39:15,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:15,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:39:15,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:39:15,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:39:15,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:39:15,825 INFO L87 Difference]: Start difference. First operand 1012 states and 1459 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:39:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:15,934 INFO L93 Difference]: Finished difference Result 1380 states and 2003 transitions. [2024-11-23 22:39:15,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:39:15,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 218 [2024-11-23 22:39:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:15,946 INFO L225 Difference]: With dead ends: 1380 [2024-11-23 22:39:15,947 INFO L226 Difference]: Without dead ends: 1032 [2024-11-23 22:39:15,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:39:15,950 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 10 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:15,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 329 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:39:15,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-11-23 22:39:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1012. [2024-11-23 22:39:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 837 states have (on average 1.3357228195937874) internal successors, (1118), 837 states have internal predecessors, (1118), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:39:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1448 transitions. [2024-11-23 22:39:16,075 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1448 transitions. Word has length 218 [2024-11-23 22:39:16,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:16,075 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1448 transitions. [2024-11-23 22:39:16,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:39:16,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1448 transitions. [2024-11-23 22:39:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-23 22:39:16,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:16,079 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:16,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:39:16,079 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:16,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:16,080 INFO L85 PathProgramCache]: Analyzing trace with hash 60611227, now seen corresponding path program 1 times [2024-11-23 22:39:16,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:39:16,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129005598] [2024-11-23 22:39:16,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:16,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:39:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:46,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:39:46,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:39:46,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129005598] [2024-11-23 22:39:46,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129005598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:46,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:46,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:39:46,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331813059] [2024-11-23 22:39:46,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:46,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:39:46,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:39:46,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:39:46,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:39:46,355 INFO L87 Difference]: Start difference. First operand 1012 states and 1448 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:39:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:39:49,720 INFO L93 Difference]: Finished difference Result 1200 states and 1675 transitions. [2024-11-23 22:39:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:39:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 218 [2024-11-23 22:39:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:39:49,726 INFO L225 Difference]: With dead ends: 1200 [2024-11-23 22:39:49,726 INFO L226 Difference]: Without dead ends: 1198 [2024-11-23 22:39:49,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:39:49,728 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 330 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:39:49,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1222 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:39:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2024-11-23 22:39:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1089. [2024-11-23 22:39:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 914 states have (on average 1.3336980306345734) internal successors, (1219), 914 states have internal predecessors, (1219), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:39:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1549 transitions. [2024-11-23 22:39:49,836 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1549 transitions. Word has length 218 [2024-11-23 22:39:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:39:49,836 INFO L471 AbstractCegarLoop]: Abstraction has 1089 states and 1549 transitions. [2024-11-23 22:39:49,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:39:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1549 transitions. [2024-11-23 22:39:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-23 22:39:49,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:39:49,839 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:39:49,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 22:39:49,839 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:39:49,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:39:49,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1288061463, now seen corresponding path program 1 times [2024-11-23 22:39:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:39:49,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564564955] [2024-11-23 22:39:49,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:39:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:39:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:39:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:39:56,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:39:56,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564564955] [2024-11-23 22:39:56,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564564955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:39:56,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:39:56,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:39:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505498343] [2024-11-23 22:39:56,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:39:56,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:39:56,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:39:56,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:39:56,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:39:56,031 INFO L87 Difference]: Start difference. First operand 1089 states and 1549 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:01,053 INFO L93 Difference]: Finished difference Result 1940 states and 2790 transitions. [2024-11-23 22:40:01,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 22:40:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 218 [2024-11-23 22:40:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:01,057 INFO L225 Difference]: With dead ends: 1940 [2024-11-23 22:40:01,057 INFO L226 Difference]: Without dead ends: 1402 [2024-11-23 22:40:01,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:40:01,059 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 281 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:01,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 792 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 22:40:01,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2024-11-23 22:40:01,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1087. [2024-11-23 22:40:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 912 states have (on average 1.332236842105263) internal successors, (1215), 912 states have internal predecessors, (1215), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1545 transitions. [2024-11-23 22:40:01,146 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1545 transitions. Word has length 218 [2024-11-23 22:40:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:01,147 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1545 transitions. [2024-11-23 22:40:01,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1545 transitions. [2024-11-23 22:40:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-23 22:40:01,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:01,149 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:01,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 22:40:01,150 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:01,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:01,150 INFO L85 PathProgramCache]: Analyzing trace with hash -608003093, now seen corresponding path program 1 times [2024-11-23 22:40:01,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:01,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442414054] [2024-11-23 22:40:01,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:01,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:08,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442414054] [2024-11-23 22:40:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442414054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:08,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:40:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543950526] [2024-11-23 22:40:08,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:08,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:40:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:08,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:40:08,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:40:08,946 INFO L87 Difference]: Start difference. First operand 1087 states and 1545 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:11,487 INFO L93 Difference]: Finished difference Result 1537 states and 2165 transitions. [2024-11-23 22:40:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:40:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 218 [2024-11-23 22:40:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:11,494 INFO L225 Difference]: With dead ends: 1537 [2024-11-23 22:40:11,495 INFO L226 Difference]: Without dead ends: 1285 [2024-11-23 22:40:11,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2024-11-23 22:40:11,496 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 258 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:11,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 872 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 22:40:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2024-11-23 22:40:11,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1071. [2024-11-23 22:40:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 896 states have (on average 1.3270089285714286) internal successors, (1189), 896 states have internal predecessors, (1189), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:11,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1519 transitions. [2024-11-23 22:40:11,595 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1519 transitions. Word has length 218 [2024-11-23 22:40:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:11,596 INFO L471 AbstractCegarLoop]: Abstraction has 1071 states and 1519 transitions. [2024-11-23 22:40:11,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:11,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1519 transitions. [2024-11-23 22:40:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-23 22:40:11,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:11,597 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:11,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 22:40:11,597 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:11,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:11,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1333752460, now seen corresponding path program 1 times [2024-11-23 22:40:11,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:11,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783116508] [2024-11-23 22:40:11,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:11,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:12,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:12,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783116508] [2024-11-23 22:40:12,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783116508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:12,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:12,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:40:12,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272172051] [2024-11-23 22:40:12,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:12,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:40:12,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:12,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:40:12,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:40:12,261 INFO L87 Difference]: Start difference. First operand 1071 states and 1519 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:13,284 INFO L93 Difference]: Finished difference Result 1760 states and 2519 transitions. [2024-11-23 22:40:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:40:13,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 219 [2024-11-23 22:40:13,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:13,297 INFO L225 Difference]: With dead ends: 1760 [2024-11-23 22:40:13,301 INFO L226 Difference]: Without dead ends: 1202 [2024-11-23 22:40:13,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:40:13,303 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 178 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:13,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 628 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:40:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2024-11-23 22:40:13,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1122. [2024-11-23 22:40:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 947 states have (on average 1.3157338965153116) internal successors, (1246), 947 states have internal predecessors, (1246), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1576 transitions. [2024-11-23 22:40:13,444 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1576 transitions. Word has length 219 [2024-11-23 22:40:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:13,444 INFO L471 AbstractCegarLoop]: Abstraction has 1122 states and 1576 transitions. [2024-11-23 22:40:13,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1576 transitions. [2024-11-23 22:40:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-23 22:40:13,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:13,446 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:13,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 22:40:13,446 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:13,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:13,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1632967414, now seen corresponding path program 1 times [2024-11-23 22:40:13,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:13,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394423824] [2024-11-23 22:40:13,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:13,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:13,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:13,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394423824] [2024-11-23 22:40:13,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394423824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:13,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:13,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:40:13,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730541544] [2024-11-23 22:40:13,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:13,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:40:13,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:13,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:40:13,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:40:13,833 INFO L87 Difference]: Start difference. First operand 1122 states and 1576 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:14,327 INFO L93 Difference]: Finished difference Result 1856 states and 2632 transitions. [2024-11-23 22:40:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:40:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 219 [2024-11-23 22:40:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:14,333 INFO L225 Difference]: With dead ends: 1856 [2024-11-23 22:40:14,333 INFO L226 Difference]: Without dead ends: 1177 [2024-11-23 22:40:14,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:40:14,335 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 133 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:14,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 496 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:40:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-11-23 22:40:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1121. [2024-11-23 22:40:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 946 states have (on average 1.3150105708245243) internal successors, (1244), 946 states have internal predecessors, (1244), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1574 transitions. [2024-11-23 22:40:14,438 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1574 transitions. Word has length 219 [2024-11-23 22:40:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:14,438 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1574 transitions. [2024-11-23 22:40:14,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1574 transitions. [2024-11-23 22:40:14,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-23 22:40:14,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:14,440 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:14,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 22:40:14,441 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:14,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash 308380951, now seen corresponding path program 1 times [2024-11-23 22:40:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:14,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122241924] [2024-11-23 22:40:14,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:14,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:14,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122241924] [2024-11-23 22:40:14,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122241924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:14,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:14,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:40:14,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479197027] [2024-11-23 22:40:14,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:14,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:40:14,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:14,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:40:14,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:40:14,557 INFO L87 Difference]: Start difference. First operand 1121 states and 1574 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:14,769 INFO L93 Difference]: Finished difference Result 1871 states and 2695 transitions. [2024-11-23 22:40:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:40:14,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 221 [2024-11-23 22:40:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:14,774 INFO L225 Difference]: With dead ends: 1871 [2024-11-23 22:40:14,775 INFO L226 Difference]: Without dead ends: 1193 [2024-11-23 22:40:14,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:40:14,781 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 40 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:14,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 312 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:40:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2024-11-23 22:40:14,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1065. [2024-11-23 22:40:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 890 states have (on average 1.3438202247191011) internal successors, (1196), 890 states have internal predecessors, (1196), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1526 transitions. [2024-11-23 22:40:14,927 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1526 transitions. Word has length 221 [2024-11-23 22:40:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:14,928 INFO L471 AbstractCegarLoop]: Abstraction has 1065 states and 1526 transitions. [2024-11-23 22:40:14,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:14,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1526 transitions. [2024-11-23 22:40:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-23 22:40:14,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:14,930 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:14,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 22:40:14,930 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:14,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash 186496068, now seen corresponding path program 1 times [2024-11-23 22:40:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:14,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540205104] [2024-11-23 22:40:14,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:15,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:15,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540205104] [2024-11-23 22:40:15,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540205104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:15,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:15,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:40:15,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446516776] [2024-11-23 22:40:15,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:15,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:40:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:15,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:40:15,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:40:15,249 INFO L87 Difference]: Start difference. First operand 1065 states and 1526 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:15,978 INFO L93 Difference]: Finished difference Result 1926 states and 2754 transitions. [2024-11-23 22:40:15,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:40:15,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 222 [2024-11-23 22:40:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:15,983 INFO L225 Difference]: With dead ends: 1926 [2024-11-23 22:40:15,983 INFO L226 Difference]: Without dead ends: 1234 [2024-11-23 22:40:15,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:40:15,985 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 148 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:15,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 734 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:40:15,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-11-23 22:40:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1116. [2024-11-23 22:40:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 941 states have (on average 1.3358129649309245) internal successors, (1257), 941 states have internal predecessors, (1257), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:16,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1587 transitions. [2024-11-23 22:40:16,093 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1587 transitions. Word has length 222 [2024-11-23 22:40:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:16,093 INFO L471 AbstractCegarLoop]: Abstraction has 1116 states and 1587 transitions. [2024-11-23 22:40:16,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1587 transitions. [2024-11-23 22:40:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-23 22:40:16,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:16,095 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:16,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 22:40:16,095 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:16,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash -46767024, now seen corresponding path program 1 times [2024-11-23 22:40:16,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:16,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309583801] [2024-11-23 22:40:16,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:16,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:16,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:16,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309583801] [2024-11-23 22:40:16,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309583801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:16,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:16,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:40:16,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354521553] [2024-11-23 22:40:16,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:16,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:40:16,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:16,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:40:16,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:40:16,506 INFO L87 Difference]: Start difference. First operand 1116 states and 1587 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:17,209 INFO L93 Difference]: Finished difference Result 1940 states and 2767 transitions. [2024-11-23 22:40:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:40:17,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 222 [2024-11-23 22:40:17,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:17,216 INFO L225 Difference]: With dead ends: 1940 [2024-11-23 22:40:17,217 INFO L226 Difference]: Without dead ends: 1236 [2024-11-23 22:40:17,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:40:17,219 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 158 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:17,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 741 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:40:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2024-11-23 22:40:17,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1081. [2024-11-23 22:40:17,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 906 states have (on average 1.3333333333333333) internal successors, (1208), 906 states have internal predecessors, (1208), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1538 transitions. [2024-11-23 22:40:17,343 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1538 transitions. Word has length 222 [2024-11-23 22:40:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:17,344 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1538 transitions. [2024-11-23 22:40:17,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:17,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1538 transitions. [2024-11-23 22:40:17,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-23 22:40:17,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:17,345 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:17,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 22:40:17,345 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:17,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1509336734, now seen corresponding path program 1 times [2024-11-23 22:40:17,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:17,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598127063] [2024-11-23 22:40:17,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:17,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:17,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:17,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598127063] [2024-11-23 22:40:17,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598127063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:17,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:17,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:40:17,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364542881] [2024-11-23 22:40:17,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:17,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:40:17,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:17,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:40:17,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:40:17,598 INFO L87 Difference]: Start difference. First operand 1081 states and 1538 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:18,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:18,021 INFO L93 Difference]: Finished difference Result 1835 states and 2641 transitions. [2024-11-23 22:40:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:40:18,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 225 [2024-11-23 22:40:18,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:18,025 INFO L225 Difference]: With dead ends: 1835 [2024-11-23 22:40:18,025 INFO L226 Difference]: Without dead ends: 1084 [2024-11-23 22:40:18,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:40:18,027 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 124 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:18,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 516 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:40:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2024-11-23 22:40:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1018. [2024-11-23 22:40:18,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 843 states have (on average 1.3440094899169632) internal successors, (1133), 843 states have internal predecessors, (1133), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1463 transitions. [2024-11-23 22:40:18,171 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1463 transitions. Word has length 225 [2024-11-23 22:40:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:18,171 INFO L471 AbstractCegarLoop]: Abstraction has 1018 states and 1463 transitions. [2024-11-23 22:40:18,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1463 transitions. [2024-11-23 22:40:18,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-23 22:40:18,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:18,174 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:18,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 22:40:18,174 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:18,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1153059011, now seen corresponding path program 1 times [2024-11-23 22:40:18,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:18,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72285158] [2024-11-23 22:40:18,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:18,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:20,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72285158] [2024-11-23 22:40:20,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72285158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:20,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:20,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:40:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815926395] [2024-11-23 22:40:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:20,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:40:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:20,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:40:20,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:40:20,638 INFO L87 Difference]: Start difference. First operand 1018 states and 1463 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:40:23,340 INFO L93 Difference]: Finished difference Result 1862 states and 2667 transitions. [2024-11-23 22:40:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:40:23,340 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 225 [2024-11-23 22:40:23,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:40:23,344 INFO L225 Difference]: With dead ends: 1862 [2024-11-23 22:40:23,344 INFO L226 Difference]: Without dead ends: 1174 [2024-11-23 22:40:23,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:40:23,347 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 277 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:40:23,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1183 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 22:40:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2024-11-23 22:40:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1062. [2024-11-23 22:40:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 887 states have (on average 1.3269447576099211) internal successors, (1177), 887 states have internal predecessors, (1177), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:40:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1507 transitions. [2024-11-23 22:40:23,496 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1507 transitions. Word has length 225 [2024-11-23 22:40:23,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:40:23,497 INFO L471 AbstractCegarLoop]: Abstraction has 1062 states and 1507 transitions. [2024-11-23 22:40:23,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:40:23,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1507 transitions. [2024-11-23 22:40:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-23 22:40:23,499 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:40:23,499 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:40:23,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 22:40:23,500 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:40:23,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:40:23,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2120839931, now seen corresponding path program 1 times [2024-11-23 22:40:23,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:40:23,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447179758] [2024-11-23 22:40:23,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:40:23,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:40:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:40:54,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:40:54,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:40:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447179758] [2024-11-23 22:40:54,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447179758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:40:54,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:40:54,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-23 22:40:54,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732462145] [2024-11-23 22:40:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:40:54,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 22:40:54,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:40:54,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 22:40:54,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:40:54,623 INFO L87 Difference]: Start difference. First operand 1062 states and 1507 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:41:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:41:01,032 INFO L93 Difference]: Finished difference Result 1276 states and 1737 transitions. [2024-11-23 22:41:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 22:41:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 225 [2024-11-23 22:41:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:41:01,036 INFO L225 Difference]: With dead ends: 1276 [2024-11-23 22:41:01,036 INFO L226 Difference]: Without dead ends: 1274 [2024-11-23 22:41:01,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=380, Invalid=1690, Unknown=0, NotChecked=0, Total=2070 [2024-11-23 22:41:01,038 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 403 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:41:01,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1268 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-23 22:41:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2024-11-23 22:41:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1074. [2024-11-23 22:41:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 899 states have (on average 1.324805339265851) internal successors, (1191), 899 states have internal predecessors, (1191), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:41:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1521 transitions. [2024-11-23 22:41:01,158 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1521 transitions. Word has length 225 [2024-11-23 22:41:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:41:01,158 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1521 transitions. [2024-11-23 22:41:01,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:41:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1521 transitions. [2024-11-23 22:41:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-23 22:41:01,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:41:01,161 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:41:01,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-23 22:41:01,161 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:41:01,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:41:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2112087751, now seen corresponding path program 1 times [2024-11-23 22:41:01,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:41:01,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133601110] [2024-11-23 22:41:01,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:41:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:41:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:42:06,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:06,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133601110] [2024-11-23 22:42:06,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133601110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:06,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:06,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:42:06,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648394443] [2024-11-23 22:42:06,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:06,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:42:06,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:06,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:42:06,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:42:06,727 INFO L87 Difference]: Start difference. First operand 1074 states and 1521 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:42:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:13,195 INFO L93 Difference]: Finished difference Result 1192 states and 1648 transitions. [2024-11-23 22:42:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 22:42:13,195 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 225 [2024-11-23 22:42:13,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:13,199 INFO L225 Difference]: With dead ends: 1192 [2024-11-23 22:42:13,199 INFO L226 Difference]: Without dead ends: 1190 [2024-11-23 22:42:13,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=322, Invalid=1160, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 22:42:13,201 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 504 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:13,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1478 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-23 22:42:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2024-11-23 22:42:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1070. [2024-11-23 22:42:13,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 895 states have (on average 1.324022346368715) internal successors, (1185), 895 states have internal predecessors, (1185), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:42:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1515 transitions. [2024-11-23 22:42:13,371 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1515 transitions. Word has length 225 [2024-11-23 22:42:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:13,371 INFO L471 AbstractCegarLoop]: Abstraction has 1070 states and 1515 transitions. [2024-11-23 22:42:13,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:42:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1515 transitions. [2024-11-23 22:42:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-23 22:42:13,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:13,374 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:13,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 22:42:13,374 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:13,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1965596799, now seen corresponding path program 1 times [2024-11-23 22:42:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:13,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295319558] [2024-11-23 22:42:13,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:42:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:42:14,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:42:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295319558] [2024-11-23 22:42:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295319558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:42:14,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:42:14,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:42:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840622186] [2024-11-23 22:42:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:42:14,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:42:14,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:42:14,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:42:14,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:42:14,065 INFO L87 Difference]: Start difference. First operand 1070 states and 1515 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:42:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:42:15,516 INFO L93 Difference]: Finished difference Result 1956 states and 2760 transitions. [2024-11-23 22:42:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:42:15,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 225 [2024-11-23 22:42:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:42:15,522 INFO L225 Difference]: With dead ends: 1956 [2024-11-23 22:42:15,522 INFO L226 Difference]: Without dead ends: 1244 [2024-11-23 22:42:15,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:42:15,525 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 204 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:42:15,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 970 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:42:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2024-11-23 22:42:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1070. [2024-11-23 22:42:15,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 895 states have (on average 1.3195530726256983) internal successors, (1181), 895 states have internal predecessors, (1181), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:42:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1511 transitions. [2024-11-23 22:42:15,623 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1511 transitions. Word has length 225 [2024-11-23 22:42:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:42:15,623 INFO L471 AbstractCegarLoop]: Abstraction has 1070 states and 1511 transitions. [2024-11-23 22:42:15,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:42:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1511 transitions. [2024-11-23 22:42:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-23 22:42:15,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:42:15,625 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:42:15,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 22:42:15,625 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:42:15,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:42:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1236856562, now seen corresponding path program 1 times [2024-11-23 22:42:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:42:15,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811600979] [2024-11-23 22:42:15,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:42:15,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:42:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:43:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:43:22,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:43:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811600979] [2024-11-23 22:43:22,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811600979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:43:22,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:43:22,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-23 22:43:22,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630864345] [2024-11-23 22:43:22,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:43:22,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 22:43:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:43:22,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 22:43:22,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:43:22,538 INFO L87 Difference]: Start difference. First operand 1070 states and 1511 transitions. Second operand has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:43:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:43:29,255 INFO L93 Difference]: Finished difference Result 1222 states and 1674 transitions. [2024-11-23 22:43:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 22:43:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 226 [2024-11-23 22:43:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:43:29,259 INFO L225 Difference]: With dead ends: 1222 [2024-11-23 22:43:29,260 INFO L226 Difference]: Without dead ends: 1220 [2024-11-23 22:43:29,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=331, Invalid=1475, Unknown=0, NotChecked=0, Total=1806 [2024-11-23 22:43:29,261 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 538 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:43:29,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1294 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-23 22:43:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2024-11-23 22:43:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1082. [2024-11-23 22:43:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 907 states have (on average 1.3175303197353914) internal successors, (1195), 907 states have internal predecessors, (1195), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:43:29,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1525 transitions. [2024-11-23 22:43:29,391 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1525 transitions. Word has length 226 [2024-11-23 22:43:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:43:29,392 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1525 transitions. [2024-11-23 22:43:29,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:43:29,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1525 transitions. [2024-11-23 22:43:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-23 22:43:29,393 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:43:29,393 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:43:29,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 22:43:29,393 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:43:29,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:43:29,394 INFO L85 PathProgramCache]: Analyzing trace with hash 686371472, now seen corresponding path program 1 times [2024-11-23 22:43:29,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:43:29,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689862715] [2024-11-23 22:43:29,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:43:29,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:43:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:44:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:44:06,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:44:06,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689862715] [2024-11-23 22:44:06,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689862715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:44:06,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:44:06,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:44:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647277822] [2024-11-23 22:44:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:44:06,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:44:06,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:44:06,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:44:06,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:44:06,857 INFO L87 Difference]: Start difference. First operand 1082 states and 1525 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:44:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:44:17,422 INFO L93 Difference]: Finished difference Result 1250 states and 1702 transitions. [2024-11-23 22:44:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-23 22:44:17,423 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 226 [2024-11-23 22:44:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:44:17,427 INFO L225 Difference]: With dead ends: 1250 [2024-11-23 22:44:17,427 INFO L226 Difference]: Without dead ends: 1248 [2024-11-23 22:44:17,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=446, Invalid=1716, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 22:44:17,428 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 333 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:44:17,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1416 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-23 22:44:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2024-11-23 22:44:17,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1094. [2024-11-23 22:44:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 919 states have (on average 1.3155603917301415) internal successors, (1209), 919 states have internal predecessors, (1209), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:44:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1539 transitions. [2024-11-23 22:44:17,536 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1539 transitions. Word has length 226 [2024-11-23 22:44:17,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:44:17,537 INFO L471 AbstractCegarLoop]: Abstraction has 1094 states and 1539 transitions. [2024-11-23 22:44:17,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:44:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1539 transitions. [2024-11-23 22:44:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-23 22:44:17,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:44:17,539 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:44:17,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 22:44:17,540 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:44:17,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:44:17,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1928201068, now seen corresponding path program 1 times [2024-11-23 22:44:17,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:44:17,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690011157] [2024-11-23 22:44:17,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:44:17,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:44:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:44:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:44:18,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:44:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690011157] [2024-11-23 22:44:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690011157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:44:18,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:44:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:44:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97872219] [2024-11-23 22:44:18,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:44:18,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:44:18,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:44:18,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:44:18,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:44:18,353 INFO L87 Difference]: Start difference. First operand 1094 states and 1539 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:44:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:44:19,671 INFO L93 Difference]: Finished difference Result 1880 states and 2672 transitions. [2024-11-23 22:44:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:44:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 229 [2024-11-23 22:44:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:44:19,675 INFO L225 Difference]: With dead ends: 1880 [2024-11-23 22:44:19,676 INFO L226 Difference]: Without dead ends: 1133 [2024-11-23 22:44:19,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:44:19,678 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 161 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:44:19,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 802 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:44:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-23 22:44:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1035. [2024-11-23 22:44:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 860 states have (on average 1.3244186046511628) internal successors, (1139), 860 states have internal predecessors, (1139), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:44:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1469 transitions. [2024-11-23 22:44:19,797 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1469 transitions. Word has length 229 [2024-11-23 22:44:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:44:19,797 INFO L471 AbstractCegarLoop]: Abstraction has 1035 states and 1469 transitions. [2024-11-23 22:44:19,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2024-11-23 22:44:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1469 transitions. [2024-11-23 22:44:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-23 22:44:19,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:44:19,800 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:44:19,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-23 22:44:19,800 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:44:19,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:44:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1693602857, now seen corresponding path program 1 times [2024-11-23 22:44:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:44:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119808509] [2024-11-23 22:44:19,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:44:19,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:44:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:44:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:44:50,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:44:50,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119808509] [2024-11-23 22:44:50,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119808509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:44:50,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:44:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-23 22:44:50,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968551174] [2024-11-23 22:44:50,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:44:50,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:44:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:44:50,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:44:50,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:44:50,197 INFO L87 Difference]: Start difference. First operand 1035 states and 1469 transitions. Second operand has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:44:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:44:55,687 INFO L93 Difference]: Finished difference Result 1135 states and 1573 transitions. [2024-11-23 22:44:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 22:44:55,688 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 230 [2024-11-23 22:44:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:44:55,692 INFO L225 Difference]: With dead ends: 1135 [2024-11-23 22:44:55,692 INFO L226 Difference]: Without dead ends: 1133 [2024-11-23 22:44:55,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 22:44:55,695 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 287 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 2006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:44:55,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1508 Invalid, 2006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 22:44:55,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-23 22:44:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1027. [2024-11-23 22:44:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 852 states have (on average 1.3251173708920188) internal successors, (1129), 852 states have internal predecessors, (1129), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:44:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1459 transitions. [2024-11-23 22:44:55,869 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1459 transitions. Word has length 230 [2024-11-23 22:44:55,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:44:55,870 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1459 transitions. [2024-11-23 22:44:55,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:44:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1459 transitions. [2024-11-23 22:44:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-23 22:44:55,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:44:55,873 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:44:55,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 22:44:55,873 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:44:55,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:44:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash 229625177, now seen corresponding path program 1 times [2024-11-23 22:44:55,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:44:55,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483026290] [2024-11-23 22:44:55,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:44:55,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:44:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-11-23 22:45:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:45:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483026290] [2024-11-23 22:45:30,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483026290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:45:30,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:45:30,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:45:30,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921944717] [2024-11-23 22:45:30,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:45:30,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:45:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:45:30,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:45:30,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:45:30,956 INFO L87 Difference]: Start difference. First operand 1027 states and 1459 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:45:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:45:35,797 INFO L93 Difference]: Finished difference Result 1129 states and 1567 transitions. [2024-11-23 22:45:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:45:35,798 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 230 [2024-11-23 22:45:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:45:35,801 INFO L225 Difference]: With dead ends: 1129 [2024-11-23 22:45:35,802 INFO L226 Difference]: Without dead ends: 1127 [2024-11-23 22:45:35,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=223, Invalid=899, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 22:45:35,803 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 347 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:45:35,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1415 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 22:45:35,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2024-11-23 22:45:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1019. [2024-11-23 22:45:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 844 states have (on average 1.3258293838862558) internal successors, (1119), 844 states have internal predecessors, (1119), 165 states have call successors, (165), 9 states have call predecessors, (165), 9 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2024-11-23 22:45:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1449 transitions. [2024-11-23 22:45:35,902 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1449 transitions. Word has length 230 [2024-11-23 22:45:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:45:35,903 INFO L471 AbstractCegarLoop]: Abstraction has 1019 states and 1449 transitions. [2024-11-23 22:45:35,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-23 22:45:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1449 transitions. [2024-11-23 22:45:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-23 22:45:35,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:45:35,908 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:45:35,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 22:45:35,908 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:45:35,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:45:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1764759547, now seen corresponding path program 1 times [2024-11-23 22:45:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:45:35,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950646273] [2024-11-23 22:45:35,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:45:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-23 22:45:36,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:45:36,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950646273] [2024-11-23 22:45:36,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950646273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:45:36,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766026520] [2024-11-23 22:45:36,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:36,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:45:36,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:45:36,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:45:36,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:45:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:37,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:45:37,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:45:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 4431 proven. 2 refuted. 0 times theorem prover too weak. 4224 trivial. 0 not checked. [2024-11-23 22:45:37,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:45:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-23 22:45:38,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766026520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:45:38,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:45:38,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-11-23 22:45:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27145782] [2024-11-23 22:45:38,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:45:38,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:45:38,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:45:38,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:45:38,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:45:38,337 INFO L87 Difference]: Start difference. First operand 1019 states and 1449 transitions. Second operand has 10 states, 10 states have (on average 20.4) internal successors, (204), 10 states have internal predecessors, (204), 4 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2024-11-23 22:45:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:45:39,270 INFO L93 Difference]: Finished difference Result 3321 states and 4698 transitions. [2024-11-23 22:45:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:45:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 10 states have internal predecessors, (204), 4 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) Word has length 427 [2024-11-23 22:45:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:45:39,280 INFO L225 Difference]: With dead ends: 3321 [2024-11-23 22:45:39,281 INFO L226 Difference]: Without dead ends: 2981 [2024-11-23 22:45:39,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 869 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:45:39,284 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 1405 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:45:39,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 737 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:45:39,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2024-11-23 22:45:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1566. [2024-11-23 22:45:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1339 states have (on average 1.3248693054518297) internal successors, (1774), 1343 states have internal predecessors, (1774), 209 states have call successors, (209), 17 states have call predecessors, (209), 17 states have return successors, (209), 205 states have call predecessors, (209), 209 states have call successors, (209) [2024-11-23 22:45:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2192 transitions. [2024-11-23 22:45:39,561 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2192 transitions. Word has length 427 [2024-11-23 22:45:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:45:39,562 INFO L471 AbstractCegarLoop]: Abstraction has 1566 states and 2192 transitions. [2024-11-23 22:45:39,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 10 states have internal predecessors, (204), 4 states have call successors, (132), 2 states have call predecessors, (132), 2 states have return successors, (132), 4 states have call predecessors, (132), 4 states have call successors, (132) [2024-11-23 22:45:39,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2192 transitions. [2024-11-23 22:45:39,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2024-11-23 22:45:39,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:45:39,568 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:45:39,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 22:45:39,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-23 22:45:39,772 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:45:39,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:45:39,773 INFO L85 PathProgramCache]: Analyzing trace with hash 575966973, now seen corresponding path program 1 times [2024-11-23 22:45:39,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:45:39,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323586123] [2024-11-23 22:45:39,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:39,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:45:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 16 proven. 61 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-23 22:45:40,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:45:40,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323586123] [2024-11-23 22:45:40,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323586123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:45:40,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052075175] [2024-11-23 22:45:40,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:40,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:45:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:45:40,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:45:40,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:45:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:40,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 22:45:40,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:45:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 991 proven. 4483 refuted. 0 times theorem prover too weak. 3183 trivial. 0 not checked. [2024-11-23 22:45:41,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:45:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 190 proven. 63 refuted. 0 times theorem prover too weak. 8404 trivial. 0 not checked. [2024-11-23 22:45:42,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052075175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:45:42,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:45:42,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 19 [2024-11-23 22:45:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654327147] [2024-11-23 22:45:42,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:45:42,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:45:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:45:42,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:45:42,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:45:42,515 INFO L87 Difference]: Start difference. First operand 1566 states and 2192 transitions. Second operand has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 19 states have internal predecessors, (243), 5 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (176), 5 states have call predecessors, (176), 5 states have call successors, (176) [2024-11-23 22:45:46,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:45:46,878 INFO L93 Difference]: Finished difference Result 3196 states and 4528 transitions. [2024-11-23 22:45:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-23 22:45:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 19 states have internal predecessors, (243), 5 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (176), 5 states have call predecessors, (176), 5 states have call successors, (176) Word has length 427 [2024-11-23 22:45:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:45:46,898 INFO L225 Difference]: With dead ends: 3196 [2024-11-23 22:45:46,898 INFO L226 Difference]: Without dead ends: 1961 [2024-11-23 22:45:46,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 855 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=670, Invalid=3236, Unknown=0, NotChecked=0, Total=3906 [2024-11-23 22:45:46,905 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 3067 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 1193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3068 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1193 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:45:46,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3068 Valid, 2425 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1193 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-23 22:45:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2024-11-23 22:45:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1470. [2024-11-23 22:45:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1215 states have (on average 1.3176954732510289) internal successors, (1601), 1218 states have internal predecessors, (1601), 231 states have call successors, (231), 23 states have call predecessors, (231), 23 states have return successors, (231), 228 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-23 22:45:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2063 transitions. [2024-11-23 22:45:47,260 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2063 transitions. Word has length 427 [2024-11-23 22:45:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:45:47,261 INFO L471 AbstractCegarLoop]: Abstraction has 1470 states and 2063 transitions. [2024-11-23 22:45:47,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.789473684210526) internal successors, (243), 19 states have internal predecessors, (243), 5 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (176), 5 states have call predecessors, (176), 5 states have call successors, (176) [2024-11-23 22:45:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2063 transitions. [2024-11-23 22:45:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-23 22:45:47,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:45:47,268 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:45:47,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 22:45:47,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-23 22:45:47,472 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:45:47,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:45:47,473 INFO L85 PathProgramCache]: Analyzing trace with hash -7177152, now seen corresponding path program 1 times [2024-11-23 22:45:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:45:47,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999264718] [2024-11-23 22:45:47,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:47,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:45:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 16 proven. 61 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-23 22:45:48,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:45:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999264718] [2024-11-23 22:45:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999264718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:45:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733336086] [2024-11-23 22:45:48,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:48,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:45:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:45:48,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:45:48,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:45:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:48,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:45:48,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:45:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 4407 proven. 90 refuted. 0 times theorem prover too weak. 4160 trivial. 0 not checked. [2024-11-23 22:45:48,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:45:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 8657 backedges. 177 proven. 90 refuted. 0 times theorem prover too weak. 8390 trivial. 0 not checked. [2024-11-23 22:45:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733336086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:45:49,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:45:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-23 22:45:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198757589] [2024-11-23 22:45:49,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:45:49,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:45:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:45:49,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:45:49,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:45:49,436 INFO L87 Difference]: Start difference. First operand 1470 states and 2063 transitions. Second operand has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 4 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) [2024-11-23 22:45:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:45:52,286 INFO L93 Difference]: Finished difference Result 2978 states and 4183 transitions. [2024-11-23 22:45:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-23 22:45:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 4 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) Word has length 428 [2024-11-23 22:45:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:45:52,299 INFO L225 Difference]: With dead ends: 2978 [2024-11-23 22:45:52,299 INFO L226 Difference]: Without dead ends: 1770 [2024-11-23 22:45:52,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 859 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=477, Invalid=1685, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 22:45:52,307 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 1412 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:45:52,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1046 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 22:45:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2024-11-23 22:45:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1257. [2024-11-23 22:45:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 993 states have (on average 1.2930513595166162) internal successors, (1284), 996 states have internal predecessors, (1284), 231 states have call successors, (231), 32 states have call predecessors, (231), 32 states have return successors, (231), 228 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-23 22:45:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1746 transitions. [2024-11-23 22:45:52,652 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1746 transitions. Word has length 428 [2024-11-23 22:45:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:45:52,653 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1746 transitions. [2024-11-23 22:45:52,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 4 states have call successors, (159), 2 states have call predecessors, (159), 4 states have return successors, (161), 4 states have call predecessors, (161), 4 states have call successors, (161) [2024-11-23 22:45:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1746 transitions. [2024-11-23 22:45:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-23 22:45:52,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:45:52,659 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:45:52,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 22:45:52,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-23 22:45:52,860 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:45:52,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:45:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash -337218239, now seen corresponding path program 1 times [2024-11-23 22:45:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:45:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298839843] [2024-11-23 22:45:52,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:52,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:45:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8658 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-23 22:45:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:45:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298839843] [2024-11-23 22:45:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298839843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:45:57,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950760575] [2024-11-23 22:45:57,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:45:57,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:45:57,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:45:57,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:45:57,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:45:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:45:57,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 22:45:57,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:46:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8658 backedges. 282 proven. 4518 refuted. 0 times theorem prover too weak. 3858 trivial. 0 not checked. [2024-11-23 22:46:01,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:46:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950760575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:46:05,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:46:05,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 19 [2024-11-23 22:46:05,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729864579] [2024-11-23 22:46:05,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:46:05,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:46:05,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:05,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:46:05,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:46:05,512 INFO L87 Difference]: Start difference. First operand 1257 states and 1746 transitions. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 3 states have call successors, (132), 4 states have call predecessors, (132), 5 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) [2024-11-23 22:46:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:46:10,727 INFO L93 Difference]: Finished difference Result 3118 states and 4318 transitions. [2024-11-23 22:46:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-23 22:46:10,728 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 3 states have call successors, (132), 4 states have call predecessors, (132), 5 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) Word has length 428 [2024-11-23 22:46:10,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:46:10,738 INFO L225 Difference]: With dead ends: 3118 [2024-11-23 22:46:10,738 INFO L226 Difference]: Without dead ends: 2147 [2024-11-23 22:46:10,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=409, Invalid=1571, Unknown=0, NotChecked=0, Total=1980 [2024-11-23 22:46:10,743 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 865 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:46:10,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 2475 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 22:46:10,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2024-11-23 22:46:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1710. [2024-11-23 22:46:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1358 states have (on average 1.2901325478645067) internal successors, (1752), 1362 states have internal predecessors, (1752), 308 states have call successors, (308), 43 states have call predecessors, (308), 43 states have return successors, (308), 304 states have call predecessors, (308), 308 states have call successors, (308) [2024-11-23 22:46:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2368 transitions. [2024-11-23 22:46:11,167 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2368 transitions. Word has length 428 [2024-11-23 22:46:11,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:46:11,168 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 2368 transitions. [2024-11-23 22:46:11,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 19 states have internal predecessors, (151), 3 states have call successors, (132), 4 states have call predecessors, (132), 5 states have return successors, (132), 3 states have call predecessors, (132), 3 states have call successors, (132) [2024-11-23 22:46:11,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2368 transitions. [2024-11-23 22:46:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-11-23 22:46:11,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:46:11,177 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:11,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 22:46:11,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-23 22:46:11,378 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:46:11,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1348335489, now seen corresponding path program 1 times [2024-11-23 22:46:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453612681] [2024-11-23 22:46:11,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8658 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 8580 trivial. 0 not checked. [2024-11-23 22:46:15,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:15,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453612681] [2024-11-23 22:46:15,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453612681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:46:15,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147067667] [2024-11-23 22:46:15,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:15,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:15,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:46:15,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:46:15,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412016d-2dda-4f6f-8967-16a7d2bae511/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:46:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:16,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-23 22:46:16,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:46:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8658 backedges. 883 proven. 4498 refuted. 0 times theorem prover too weak. 3277 trivial. 0 not checked. [2024-11-23 22:46:35,825 INFO L312 TraceCheckSpWp]: Computing backward predicates...